Chevy gear ratio identification

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It is located on the right hand side of the case and is composed of two letters. the axle shafts are held in with bolts. By the mid-1990s, the 4T60-E was the transmission of choice in nearly every front-wheel drive GM vehicle with the exception of compacts. 777 5th. 76 ratio with a pretty mild 350 in my truck. 1965 Chevelle Rear Axle and Differential Identification. 54 and a 2. 25 Front Differential units, ring and pinion parts available for immediate shipping. Differential Gear Lube We offer the GM petroleum based gear lube, which is specified by Eaton for use with their carbon fiber clutch pack. So if you are replacing a 4-speed, ANYTHING would be an improvement. Identify your GMC or Chevrolet rear end gear ratio by the RPO Codes, usually located on the placard labeled “Service Parts Identification” inside the drivers door panel or glove box. 08, Optional axle ratios include 3. 38 to 1 ratio ring and pinion, you can cruise at 65 mph. Tall (high) gears have LOWER numerical numbers such as 2. Visit Beaver Chevrolet in Jacksonville FL serving Orange Park, Ponte Vedra and Jacksonville Beach #3GCPYCEF0LG179646 This was accomplished by installing the 16:1 ratio steering box in the car. 73 just over four times = 4. Trans ratios are MM5, manual - no ratios listed, M41 auto and M59 manual which I think is for the 1. If the car had Power Steering, it already had the quick ratio box which received the normal power steering ID tag code. Write your VIN# down on a piece of paper and call a dealer ship and ask for parts, Then tell the parts man that you want to know the gear ratio in your truck. 79 overdrive reduces downshifting. Choosing the correct gear ratio is critical to maximizing performance, efficiency, and drivability for a wide range of vehicles operating even under the most  $247. It is the gear under your seat that counts. The major differences are in the ratio spacing and first/OD ratios. Jun 23, 2009 · I just found a Borg Warner T-10, and could use some help ID'ing it. Here is a quick tire size vs gear ratio /speed calculator that is easy to use. If you are looking for help with restoring or hot rodding your chevy classic a good place to go for help is Chevy Talk my favorite forum is 1955-1957 ( Modified / pro street / show) forum. 81: 1. "Tall" gears and "short" gears are referring to the gear ratios. Aug 07, 2018 · Gear ratio set (i. How do you tell what gear ratio a 99-02 NBS has? What are the most common gear sizes they came with? 3. Not all applications will have one of these codes but when they apply, they will be listed in addition to an axle code found in the main RPO axle code list below. 41 through 4. light duty trucks for 1991. Does any one have any back on the gas mileage for the above configurations. GM 4L80E technical information The 4L80E transmission is a four speed automatic with torque converter clutch. You will have one and possibly two of the following codes if you have the G80 option. An important thing to note is that the ring gear bolts are. Oct 19, 2017 · 3. The 55-56 overdrive tag was the same as 57 and later. The best oil we have ever tested is Royal Purple. Overall First Gear Ratio : 1 (Tranny Ratio x Rear Gear Ratio) This indicates the mechanical advantage your car will have coming off the line - higher number is better (up to a point) The NV4500 transmission is still one of the most popular and versatile transmission for converting into your 4 or 2 Wheel Drive. That would price the axle assembly at $143 including a $20 core charge. 5" ring gear configuration. Rebuilt 14 Bolt Corp Rear Axle Gear Ratio changes from 373 to 456 $355. Standard Gear Ratio on the Chevy Silverado 1500. 13:1 gear ratios and had a GAWR of 8000 lbs. 07:1 ratio 12-bolt - Chevrolet lists the ring gear as part #3863691. 56 circles. 25" IFS front end parts, to the large 11. 64:1 and 2. 55 and numerically lower gears, typically incorporated a wide-ratio transmission. 3 and that is hard to find unless you do as Jim suggested and hunt down a donor rear for the gears or buy new gears with the ratio you need. gear sets are offered for the carriers, especially if you change gear ratios. 01 13% 2nd 1. 3.   It's just backwards from the way we think, if you have a 4. Sterndrive Replacement is a company unlike any other in the sale of aftermarket MerCruiser's Sterndrive , Alpha One Generation 1, Alpha One Generation 2, Bravo 1, our stern drive designed to replace Mercury Marine's Mercruiser®, Alpha One®, R, MR, Gen 2 and Bravo One® stern drives. Jun 23, 2018 · I can’t figure out what my gear ratio is. Restored 1967-1974 Amc Borg Warner Super T-10 4 Speed 2. Find Ring and Pinion Gears with 12 Ring Gear Bolts and get Free Shipping on Orders Over $99 at Summit Racing! Gear, Ring and Pinion, 4. A ratio of 4. 86 35/35 2. 41. it is a full floating axle, with the massive 10 1/2" ring gear. In 1991 GM introduced the 4T60-E which was a 4T60 with electronic controls. Webmaster. Plug the tooth counts into the above formula and you get a first-gear ratio of 2. I'm trying to figure out which number determines my gear ratio. Its heavy duty design and proven reliability have made it stand out in the 3/4 and 1 ton marketplace. It is controlled by the number of teeth on the ring vs. IN 46240 New Sales: 888-354-6999 Used Sales: 888-354-6999 Service: 888-841-3721 EBizAutos 2017 Chevrolet SS 4 1956-1957 Chevrolet Corvette Gm Original 3-speed Close Ratio Transmission. 5 inch rear end uses two different carrier series depending on the rear gear ratio: 2. This code is marked with RED in the location photo above. New 2020 Chevrolet Colorado Z71 4D Crew Cab for sale - only $35,195. 55 to 1. GT4 -- AXLE REAR, 3. 90s, giving you that extra oomph on the track while maintaining a tolerable cruising RPM on the street. 10 41/9 is 4. 98 combined gear ratio will make even a smog motor small block Chevy feel good. 78 2. a heavily built pickup, or a small block Chevy pushing 4. 34:1 1st gear; 2nd 3. 00, 3. All this info comes from the JUNE of 1997 Peterson 4wheel and Off-Road under "HOW TO BUY A USED PICKUP: CHEVY,DODGE,FORD,TOYOTA. All Chevrolet rear ends can be identified by comparing the gasket shape to an identification chart similar to the one found on Drivetrain's differential identification page (see References). All oe 12 bolt positraction rearends use 30 spline axles the s are held in place with c clips The identification code will tell you the gear ratio, if it is a posi, and in some cases what engine and transmission the car is equipped with. You're going to have to put the car in nuetral or out of gear, so safety first! Do this on level ground, and be sure and chock the front wheels so the car can't move. 05 35/35 3. They often broke off or were not put back on. So many ratios, so many brands, different diffs, pinion splines, and more! . I’d like to know how much my truck will/won’t haul. 10 ratio and need better fuel mileage you would switch to a 3. 6L Duramax in GMC and Chevrolet pickups since 2001. We make it easy to verify your The "small" GM 14-bolt has a 9 1/2-inch ring gear diameter. GM Muncie 4-Speed Decoding The Muncie 4-speed transmission was used with many different GM models and engine combinations from 1963 through 1974. 56: 1. 73 41/10 is 4. The bellhousing pattern for 1993-1994 GM versions is unique from the later (1995-) GM and Dodge units. and number: to the Old Online Chevy Manuals. Click on your year or scroll down The headset-driven gear is the countergear front gear with a tooth count of 25. Mercruiser Sterndrive Gear Ratio Chart . Then I upgraded my heads and cam but kept the same ratio. 29 35/35 3. cabs. 73 max Other transmission info from decoder: The stamped code tells BOTH the gear ratio and the plant. My ? was a simple one Nov 05, 2010 · In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. Spend some time in the left hand lane! With our new 3. Anonymous Mar 22, 2014 i need to remove and replace front differential on a 2001 chevy taho 3. 1988 chevy pickup. East Coast Gear Supply offers wholesale discount prices on GM 10 Bolt 8. How to for street, dirt track racing and drag racing.   If you have a 3. AMC used a 2. GU4,GU6,GT4,GT5 Are The corporate 10 bolt 8. The Dana/Spicer Model 70 is an automotive axle manufactured by Dana Holding Corporation and has been used in OEM heavy duty applications by Chevrolet, Dodge, and Ford. 73 Gear Ratio I also have the leaf springs and hubs if you need them. From buying research to owner support, join 1. Decoding Chevrolet VIN, trim tags, cowl tags, engine, engine block casting numbers, Individual gear ratio identification codes can be found for their respective  The identification code will tell you the gear ratio, if it is a posi, and in some cases what engine and transmission the car is equipped with. I was disappointed with my power upgrade but no wonder with that gear ratio. The original tag reads, "USE POSITRACTION DIFF. Filed under It would be very helpful to know either how much torque these trannys were designed for or what GM engines Sep 19, 2010 · look for the service parts identification tag, its sometimes located in the glove box, or maybe one of the door posts, or on the edge of the door, what you'll find is a series of 3 digit Ring gear of 3. The Allison 1000 5 speed (2001-2005 model years) and 6 speed (2006+ model years) transmissions have been offered mated to the 6. 25-inch oval. 44: 1. Please select a rear end that matches your vehicle below. Jan 30, 2015 · A Chevy 1/2 ton pick-up may have a Chevy 10 bolt rear axle or a 12 bolt rear axle. It is driven by the input shaft with 21 teeth. 7 V-4x4? - Chevrolet 1992 K1500 question on GTP's the actual diff ratio is 3. 8 1/8 for the Chevrolet unit. It is like the VIN number for your axle assembly. 42, 3. The axle identification number is located either on a metal tag (attached to the rear of the differential) or stamped onto the front right side of the axle tube, about three inches outboard from the differential cover. 00 1. this means that dimension "C" is usually longer than dimension "B". 6 given the note of . I belive there where two Gear Ratios that You could get from the Factory with the Tow Package. Uses bolt in axles. 2004R GM Automatic Transmissions. gary f i have just purchased a 2010 silverado and would like to know how to read what the vin number means and how do i find out what my gear ratio is in the rear end. 308, 342, or 373 gears. Axle ratios can sometimes be obtained off transmission labels, but those are not necessarily accessible. but the fuel Consumshion is Very Bad too. This is your gear ratio.   However, we have also seen the codes stamped on the front, top or bottom of the tube – as well as on the left side. 44. Apr 18, 2007 · Our Final drive ratio is 3. Hey guys. Divide the ring gear teeth number by the number of teeth on the pinion. Lowest Price Guarantee. The oval-shaped cover measures 8 5/16 inches by 10 9/16 inches. I just wanted to stop by and let you know that GM Customer Care is here on the forum and are more then happy to answers questions just like your question regarding gear ratio. 55 times to complete one wheel revolution, hence the ratio 3. 73 gear ratio. These are the casting numbers used during this production year and the rear axle identification code indicates stock gear ratio, month/day of assembly, and G, Chevrolet Gear & Axle. com to find your Chevrolet and GM rear end gear ratio, ring and pinion gears, and ring and pinion sets. The countergear has 17 teeth on its first-gear section driving the actual first-speed gear with 36 teeth. Gear ratio calculator for your Chevrolet. 1somthing all the way up to 3. 5", as found in the Chevy Vega, up to the larger GM 11. It was also  12 Jun 2019 Specs: 7 1/4-inch ring gear, 27-spline axles, 2. 29 and the chain/sprocket drive ratio is 1. 25. GM Differential Identification & Specs. 14 bolt, 8 lug, semi float. O. 73 Mopar A833 Manual Transmission Identification and Gear Ratios the “close ratio” V8 gearbox. Jun 05, 2009 · Hoping the spindles and rear axle are still on it. That being said, limited gear sets are offered for the carriers, especially if you plan to change gear ratios. These RPO codes are used to idicate a specific type of differential and/or ring gear size. com/forum/vindecoder. Sep 06, 2019 · Trying to figure out my gear ratio. 23's She has 4. it uses c-clips to hold the axles hafts in. 43 10% 4th 1. 5" (after the size of the ring gear in inches. Aug 03, 2018 · Gear ratio set (i. Of relevant note: the B-bodies have a 3-channel ABS system where the RF, RR and rear brakes are each their own channel. General Motors has a wide range of front and rear ends! We carry everything from the 7. On the tag there should be some numbering   Questions about the differential gear ratios and Toyota pickups commonly come up. 56, etc which is actually a HIGHER gear ratio. Dec 17, 2014 · Finding Chevy Gear Ratios If you look in the “Regular Production Option” codes located on the Service Parts Identification sticker located on the vehicle, you can find the code. The Gear Box is your online source for t56 transmission parts,t5 transmission parts,borg warner t56,muncie transmission,t10 transmission,super t10 transmission,3550 transmission parts,manual transmission parts,t56 transmission overhaul kit, t56 transmission rebuild,rebuilding a transmission,transmission shift fork,t56 synchronizer assembly,t56 transmission gears,Corvette T56 transmission Chevrolet Rear Axle Code Identification and Decoding from thecamaro. The most common GM unit for the 1982 to 1992 Camaro is the Saginaw style 10 bolt Chevy differential. It was used in the rear of 1964-and-later GM pickups, and in the rear of 1984-91 3/4-ton Suburbans. 5" "Corporate" Rotate the tire one full revolution for posis and lockers and 2 full revolutions for open diffs. Browse a wide selection of ratio 4th gear 104 on sale this week! Chevrolet Gmc Chevy C10 Truck New 2020 Chevrolet Colorado ZR2 Truck for sale - only $45,334. GM differentials come in a wide range of sizes. In this example, 60,000 is divided by 16,800 to equal 3. Fits stock drive line. Please Report any Broken Links or Pages that do not load properly. The New Venture Gear NV3500 at a glance. by Michael Dickens The New Venture Gear 3500, a medium duty five-speed overdrive manual transmission manufactured by New Venture Gear, was used in General Motors and Dodge compact and full-size light trucks. 00 0% M-22 “Rock Crusher” Identification. I only have 28" tall tires though but even though 2500 RPM at 70 MPH was nice, it was doggy. Depending on the gear ratio, My son with the 4. Aug 24, 2008 · ok i too have chevy g20 van its a 1991 with a 350 I too would like to know what axle and gear ratio i have, and I DO NOT have any sticker or info in the door jamb. The 1993 and 1994 Chevy versions have a lower first gear of 6. Rotate the tire one full revolution for posis and lockers and 2 full revolutions for open diffs. The bearings in this rearend are smaller than the Chevy version as is the ring gear diameter, which is 8½ vs. The original truck 3-speed had a 1st gear ratio of around 3:1 and the 4-speeds (Granny gear) were about 7:1. I'm assuming it is 3. 5 Sep 2019 Choosing gears for your Toyota mini truck, Tacoma, or 4Runner is a dilemma. 55 or lower numerically) unless someone has changed it. Identify the gear ratio, the build date, the plant where it was assembled the work shift when it was assembled, and positraction source - if equipped.   This code is usually located on the right side axle tube near where the steel brake line is located. 73 and 4. " You can tell if yo have a full floater because the pumkin is real low to the ground and it has a shaft looking thing coming out where the RIM is. Sierra Gear & Axle has a complete inventory of Ring & Pinion Gear Sets for use with GM axles. While you can pull the rearend cover and look for the ratio numbers on the ring gear, there is an easier way. Divide the figure produced in Step 3 by the number produced in Step 4 to determine the rear end gear ratio. com GM A-body codes from oldsgmail. 4BCB 3400 U-van Chevy, Pontiac 3. I did try a search on here, a Google search, and a search on some other message boards, but didn't find anything. Standard Rear Axle Ratio, 3. Mar 13, 2018 · Although the 7. Get the correct parts the first time for  GM Differential Identification & Specs. these tags are not always present however. Jan 08, 2016 · The ratio is the number of teeth on the driven gear (ring) divided by the number of teeth on the drive gear (pinion). How do I figure gear ratio without taking things apart, what is the formula, something about marking driveshaft and one of the tires and rotating the tire and counting how many time the driveshaft turns? list of modern GM rpo codes/option codes for general motors vehicles Divide the big number (number of teeth on the ring gear) by the little number (the number of teeth on the pinion gear) 41/11 is 3. Gearing is what you are buying when you purchase a Gear Vendors Under/Overdrive. On late model vehicles, the axle ratios are designed to meet emission standards for areas of operation. The result is your gear ratio. 13 gear ratios, ratios. In the below examples, 2. If the car was equipped with Manual Steering, the quick ratio box was installed and received a special ID tag code. 42 RATIO I guess your asking about the gear ratio. Transmissions after this period have a higher 5. Jun 13, 2017 · If a car came with an axle ratio of 3. Muncie Speedo Gears. Carefully count the number of full revolutions the driveshaft makes. The identification code will tell you the gear ratio, if it is a posi, and in some cases what engine and transmission the car is equipped with. Axle, 3. Now, looking at RPO codes for the past 2 days I have found that gear ratios have codes GT*, or GU*. 08 RATIO GU5 -- AXLE REAR, 3. If it's missing you have to visually confirm correct bell housing bolt pattern, shifter location, speedo output type (mech or electronic)and can physically spin the box, count the revs on the input and output shafts to verify it's 5th gear ratio. 42 rear end ratio and need more towing power you would switch to a 4. I have been noticing that my gears seam to be having a difficult time, and it is really affecting the performance of my car. 07 16% 3rd 1. GH2-2. FREE Shipping. In the glove box, you'll see either GU6, GT4 or GT5 which corresponds to 3. The gear ratio most interesting to 4x4 truck owners is the ratio between the driveshaft and axles - the differential gear ratio or axle gear ratio. GM CORPORATE 14-BOLT With a 10 1/2-inch-diameter ring gear, the biggest 14-bolt GM rearend looks much like a Dana 70, and is but a few thousandths of an inch shorter in ring gear diameter. These Dana 70 axles only came with 5. The Chevy’s rear axle code contains information on the vehicle’s gear ratio, date of manufacture and the rear axle assembly plant. 03 1st gear models are too low for normal street use with a 235. 73 RATIO GT5 -- AXLE REAR, 4. 5" or 7. 29, etc. 30 1. 05 FDHB 245mm 180 NoIMS. 10 & down gear ratios, can instantly lock differentials and allow you to tackle the More Old Online Chevy Info WebCounter says that you are visitor number: to this site. M20/M21 tooth angle vs. Contrary to popular belief, the GM 200-4R can be one tough transmission. 42 and 3. 10. GM Saginaw 3 speed Ratios for Circle Track Racing Sep 14, 2007 · I know it's somewhere on this site, but don't know where. Mercruiser R-Style Sterndrives (1969 - 1983) The gear ratios are the same as in the M21, but the tooth angle is different. 43:1 ratio in both their aluminum and cast-iron cased versions. GM also used a 2. 60-66 gmc 1500 trucks use a dana 60 rear. The front always matches the ratio of the rear axle, so the code applies to both. This Information is for Research and the Promotion of the Preservation of Older Chevys Stock shifter base housing is black plastic. 121, which combined gives a final drive ratio of 2. 23 RATIO GU6 -- AXLE REAR, 3. Read GM / Chevy - Differential Identification Shop by your differential. In Defense of the Borg Warner T-50 Transmission. Has 8. the smaller 14 bolt, with it's 9 1/2" ring gear, is a semi-floating design. The identifying code is either located on a metal tag attached to a cover bolt or G = CHEVROLET GEAR AND AXLE 23 Nov 2009 There is also an axle identification code inside the driver's side door on the vehicle The bottom diagram illustrates the differences in axle ratios. 42. i had a 350 with a muncie 4 speed and with 411s and as soon as that goes i am going with a 373 ratio, with my current setup its all low end i can cruz on the highway in 4 doing 60 and its at like 5500 rpm, thats why i plan on a 373, can the guy tell you why it wont work, i love when people tell you what wont work but cant explain why, if Read the tech article on a 10-Bolt Identification Guide, brought to you by the experts at Chevy High Performance Magazine. 5-inch rearend by measuring it. 9somthing(found in the pontiac G6 only). , A=M20) (This code was added to identify ratios. This number is stamped on the forward facing passenger side axle tube (on 2nd generation) and forward facing drivers side axle tube (on 3rd gen) camaros. 02: 1. 10 RATIO GU4 -- AXLE REAR, 3. 12 and HC8=4. 5" gears, ring and pinions, ring and pinion gear sets, master install kits, pinion kits, mini install kits, axles, ujoints, bearings, air lockers, lockers, triple drilled flange, diff housings, solid spacers, flanges and other GM 10 Bolt 8. Does something in the VIN tell you? The VIN is 2GCEC19R7V1246933. All of GM's early automatic transmissions were replaced by variants of the Turbo-Hydramatic by the 1970s. GM Four Speed Transmission Gear Ratios. Those appear to be the only gear ratios offered on that C2500. 61 low ratio and reverse gear synchronization. It consists of a two or three letter prefix representing the gear ratio code, four-digit number for the assembly date in a month/day format and a single letter denoting the manufacturing location. chuckwrd, I knew that your awesome fellow forum members would be able to provide you with an answer to your question. (Accurate identification using the GM RPO code assumes that the rear end has not been previously modified) The prefix is usually F, G or H when referring to Axle Identification. 121) if things were accurate to begin with and all you changed is the tire then in the speedo section just replace the tire with the new one and enter the gear ratio as the same as it is (ie. You're going to need the vehicle identification number (VIN) number to obtain the axle ratio for your Chevrolet Truck, but even after you decipher the VIN and its sequential meaning, you're going to have to do more leg work. 00 Gear Ratio changes from 456 to 538 $395. 56 and higher gears (numerically lower) such as 2. I am surprised at the frequency of the question, since finding the answer is a really simple task. 14. 5” Corporate 14 Bolt Differential is a heavy duty differential found on many 1973-2013 Chevrolet and GMC trucks and SUVs, as well as certain versions of the Cadillac Escalade. 11:1. 5", common under 3/4 and 1 ton trucks from Chevrolet and GMC. 73. In other words, having the wrong gear ratio can turn your car into a complete and utter turd, or it can make it lightning quick off the line but no with top-end speed what so ever. 56 and higher gears ("higher" gears have lower numbers, like 2. This code will tell you the ratio, whether it is posi or not, any special notes and what plant it was made at. In the 2006 model, GM evidently saw a least a glimmer of light, and changed the internal gear ratios for all six gears to bring out more of the performance in the SSR! The 05 and 06 ratio comparison looks like this: Gear 05 model 06 model Percent Difference 1st 2. 57:1. 44:1; 3rd 1. They are easily identified by the length of the tailshaft. 2004 4T65-E ID Chart. Apr 13, 2018 · Finally, Type-4 differentials have the thickest ring gear-mounting flange and carry gear ratios ranging from 3. It is identified by its almost round rear cover. 70 ratio. Jun 23, 2015 · The C6 Z06 used the standard gear ratios since it had plenty of torque from the 427ci LS7, and the supercharged LS9 in the ZR1 model required even less help—it was given a Your axle gear ratio determines how many times your driveshaft rotates for every full tire rotation. The gear ratio codes are located on the front  During the first two years of the NV4500, Chevy offered this 5 speed with a 6. GM RPO Axle Code Notes. Apr 13, 2011 · No lol, there aren't 4. This 5-speed transmission is a selective synchromesh type with five (5) speeds forward and one (1) housed in a cast iron case. 5 inch differential on Description: GM 14 Bolt ARB® #RD235 Air Locker Features The ARB GM 14 Bolt air locker RD235 for your 40 spline axle for 4. Oct 27, 2017 · Manual Transmission Gear Ratio Charts for GM/Chevy Vehicles Posted by OnAllCylinders Staff on October 27, 2017 at 12:44 pm Gear ratio affects a variety of driveline combinations, so it’s important to know what the gear ratios are for a gearbox you might be swapping into your ride. 34:1 and an unsynchronized reverse gear. 37: 1. Vehicles leaving the factory with an axle ratio of 3. 42s and 3. Some early 1969 transmissions did not have this code. They have a 40% off sale starting on the 12th. 20 first gear in the 1963 production year, depending on engine size and rearend ratios. Additionally, this differential is found on Chevrolet Express and GMC The 14 bolt differential is a popular axle swap option for Jeep Wrangler  Identify your GMC or Chevrolet rear end gear ratio by the RPO Codes, usually located on the placard labeled “Service Parts Identification” inside the drivers door  To find the axle gear ratio of any GM vehicle, locate the RPO sticker (typically The following is a complete list of GM RPO axle codes for Chevy and GMC  13 Mar 2018 The Chevy 10-bolt rearend has really gained in popularity since the 12-bolt has Originally, gear ratios ranged from 2. 93 (ie. The headset-driven gear is the countergear front gear with a tooth count of 25. 85: 2. 73 rear will get it. Originally it a a straight six engine with a 4 speed manual trans w granny low. 73? 4. Oct 14, 2009 · what is the gear ratio in a 1993 Chevy 1500 with 5. Typically, 10-bolt differentials are specific to a series of gears. a new process trans that was removed from a 1970 chevy nova 1988 chevy pickup. RANDYS carries GM differentials from the small 6. You’ll get more gear noise, but you’ll also get more strength. it is in a 1977 chevy k/20. php?vin=1GCPKSE72CF211020 TrailBlazer - VIN to find differential ratio - Can I user the VIN to find the differential ratio? We want to buy a travel trailer and the towing capacity is dependent on which rear end we have. Divide the big gear by the little gear and that is your ratio. Both have the 5. 625 inch ring gear, 28 spline axle PN 26010268 (drum brakes) PN 26028692 (disk brakes) Muncie Transmission Identification The Muncie 4-speed transmission was used with many different GM models and engine combinations from 1963-1974. as published in MG V-8 Newsletter, Volume VI Issue 2, August 1998 by: Jim Blackwood Well, I guess its all in what you're looking for, over the past several issues I've read a number of letters criticizing the stalwart T-50, and I think it should get equal time. . Sometimes the shift code is stamped, and if the unit has a Posi-Traction, you see a P stamp. Aug 02, 2008 · This Site Might Help You. 55:1, the driveshaft will have to turn 3. 23 first gear ratio, lower than its NV3500 predecessor to improve launch feel and low-speed acceleration. I have also listed a helpful gear to tire size chart to help people better understand. Anyone know exactly where the label is? Wouldn't mind knowing but I don't what to haul the whole dash apart either. Filed under It would be very helpful to know either how much torque these trannys were designed for or what GM engines Chevrolet Tracker Gear Ratios Only the 1. My 2001 has a Tow package and I it came with like 3. The basic design and operation theory of the gearbox changed little during this period, however several design upgrades and modifications were made during the total production run. 90 to 6. M. 5-inch housing, you can positively identify the Chevy 7. Oct 24, 2017 · Saginaw Steering Gear Casting/Part numbers I planned on working on the clutch linkage for the 57 today and got sidetracked figuring out the power steering Anyway I found a steering gear out in the shed that just might work. 70 ratio. It does not have a direct 1:1 ratio like the 4L80E and 4L60E, which is worth noting. 98]. 66 3. Might make little difference for us auto guys if you can find one. This Information is for Research and the Promotion of the Preservation of Older Chevys The 1964 Chevy C60 dump truck that I am restoring has a New Process 540C 5-speed manual transmission. about 3 and 3/4 times = 3. Wide ratio with a 2. 55-64 Chevy gear ratio ? Thanks for all the examples but I do know how to calculate RPM @ MPH useing rmp x tire dia. M22. A=M20 B=M21, C=M22) G = Chevrolet G&A Positraction Carrier O = Oldsmobile Positraction Carrier W = Warren/Warner Motive Positraction Casting Numbers Due to the possible confusion with gear ratio descriptions a HIGHER number is a LOWER gear. Open the cover, count the teeth on the big gear ( the ring gear ) next count the teeth on the small gear ( the pinion gear). The first letter (A) is for the plant (Detroit Gear and Axle), and the B is the ratio (3. com Gear ratio info from gnttype. Browse Ratio 4th Gear 104 available to buy today on the internet. Rearend gear ratio Transmission and DriveLine Questions. I have it somewhere in my Pic file. The bearing is solid and the seal protects leaking through the housing. More Old Online Chevy Info WebCounter says that you are visitor number: to this site. 93 JTFM 258mm 155 NoIMS . vin# 1gcdc14h4jz147398. 00 Trutrac Limited Slip $985. With this axle the gear ratios were 3. 10. 5", as found in the Chevy   Chevy 10- and 12-bolt axle assemblies have been standard equipment on GM . 1996 ford ranger ext, chevy 5. 23 or below for optimal performance and lower cruising RPMs. A web based calculator to help you pick the right size tires, wheels, rear end, gear ratio and transmission for your 55-57 Chevrolet Gear ratio calculator for your Chevrolet This will help you pick the right size tires, transmission and gear ratio combination for your classic. 10 ratio grears in it from the Factory. 42 Ratio (With (LC9) Vortec 5. Both of these are semi-floating axles. 73, 3. A Series 2 carrier will work with 2. Check Out Richmond Gear’s Performance & Gear Ratio Calculators! Get the Best Deals of the Year on High-Quality Richmond Gear Sets! Daniel Wilkerson to Race at the AAA Texas NHRA Fall Nationals! Winners are Running Richmond at the 15th Annual NMCA Muscle Car Mayhem in Bradenton, FL! All new performance power steering gear box has a quick 12:7 to 1 ratio and utilizes the latest in steering technology. 73 gear ratio requires 3. In its stock form, it stood up to the power of the Buick Grand National. a second tag will have the limited slip oil only on it. If this ID number can be determined, a positive ID of the transmission can be made using available charts that are not in this article. Option 1. 10 rear, or myself with the 3. http://chevroletforum. 08 Except as noted below. the 4:10 rear is for performance that why it comes on the ss blazer the 3:42rear will give you the best millage but i like the 3:73 rear. Our Ring and Pinion sets are reasonably priced and are the highest quality aftermarket gear sets available. com Chevrolet Full Size and Impala Rear End/Axle Assembly Codes from from thecamaro. GM states their is only a 1 mpg difference. 09 ratio. Five-Cut Sets Product Safety Information Count the number of teeth on the pinion gear and count the number of teeth on the ring gear. Identifying a T-5 without the metal ID tag can be tricky, but using certain clues we can do a pretty good job. The basic design and operation theory of the gearbox changed little during that time, though several design upgrades and modifications were made during the total production run. The rear above has AB stamped on it. Prices and availability are subject to change without notice. 56:1 & down = 2. Truck Gear Modification: (Adapting the Chevy Gear Set) The major differences are in the ratio spacing and first/OD ratios. Allison 1000 transmission specs, ratios, and information. 23:1 ratio as well as the 2. Aug 29, 2012 · Discussion in 'Chevy Silverado Forum (GMC Sierra)' started by gary f, Aug 29, 2012. 52:1. 1994 c2500 with 5. Lower gear ratios are ideal for getting heavy loads moving or taking on steep terrain, but the more the driveline has to turn, the more fuel the engine has to consume. 98 first gear ratio [3. Mar 01, 2007 · 57 chevy original gear ratio? Anyone know the original gear ratio for a 57 chevy Bel-air? Thanks-nick- oneratfink57, Mar 1, 2007. 7 probably won't help that much with your tiny for a truck tires though. 10s and 35s. Found In: Front or rear of numerous Chevy, Dodge, Ford, Jeep, and  Identify the gear ratio, the build date, the plant where it was assembled the work shift when it was assembled, and positraction source - if equipped. What Gear Ratio is My Rearend? You can find your gear ratio easily with this method. Come to Drivetrain. So, if the ring gear has 37 teeth and the pinion has 9 teeth, the ratio is 4. 5" lift, custom 5" body  One way to determine your gear ratio is to check the tag attached to the front differential cover by the cover bolts. GU4,GU6,GT4,GT5 Are So from what I've gathered by the RPO sticker in the glovebox, my truck has 3. 3RDB 3400 Chevy W platform 2. Items may be different than pictured. Here are some gear ratio RPO codes for looking in other vehicles for specific gear sets G72-2. Note: The mounting pad is usually a part of the extension housing, but the graphic shows it on the maine case. 5 inch ring gear, 26 spline axle 1985 to 1989: 7. 27 = 10. The rear axle speed sensor is located on the differential housing above the pinion gear, which is why you need the ABS reluctor of the appropriate number of teeth for the gear ratio you have. What is rear end gear ratio? - Answered by a verified Chevy Mechanic Drop out style rear end with no removable pinion support. 5:1 range and cruise at a bit higher rpm that the torque converter stall speed in 1:1 gearing, if you have a over drive gear having a lock-up converter sure helps and a I had a 2. If you take a few moments to study the gear chart for your transmission and rear end ratio combination you will see why this product is so popular. com as a daily part of their ownership experience. RATIO CODES All differentials have a stamping code indicating gear ratio. here is a close-up of a 14 bolt gm rear end. 5" rear end parts for 1-ton trucks. (GU4) pictured below. 10:1 Ratio, GM, 12-Bolt Car Mar 30, 2008 · the easiest way to check gear ratios is to jack up one side of your rear end and with the transmission in neutral spin the tire thats in the air. The newer versions have a 3. 10:1, and so on. In the case of a gear ratio like 3. 29) The New Venture Gear NV4500 at a glance. 00: 1: 2. 0 or 3. 5" performance parts and accessories for your GM 10 Bolt 8. ) go on the 2 series carrier Inside the differential cover, the ring gear will be marked with tooth counts such as 10,41 for 4. Borla Exhaust, CAI, e-fans, Wester's Tune, MarkMc's lift & Z71 Shocks! The bearings in this rearend are smaller than the Chevy version as is the ring gear diameter, which is 8½ vs. 625 10 Bolt. Through the 1950s, all makers were working on their own automatic transmission, with four more developed inside GM alone. Therefore, the rear end gear ratio is 3. 00: Third Axle ratios are HC1=4. This is a computer controlled transmission first introduced in G. 11 this should get you right. 23 3. 5 rear end with 3. 3XAB 3800 SC Buick, Pontac W platform 3. Type-2 differentials are probably the most plentiful since they are found primarily in non-performance Chevrolet passenger cars. Ships directly from the manufacturer in 24hrs. 08 gears. 23 1st Gear Close Ratio. We offer complete transmissions, rebuild parts and a full line of engine and transfer case adapters for the NV4500. how do i find out the front axle gear ratio if my glove box is different - doing a 3/4 ton swap and dont know what gears are in the front 2015 Chevy silverado GM also placed the ID number on a green and white barcode sticker on the top cover. 14 ratio. 96th Street (P. 10? A forum community dedicated to GMC and Chevy full Gear Ratios and Identification Codes (Checkout this Page!) Rear axles can be identified by a code stamped on the front of the right axle tube about 3 inches out from the carrier and 30 to 45 degrees above horizontal or on a metal tag attached to a rear cover bolt. Awesome deal $450 for ALL4 Speed Transmission with shifter and linkageWe have a Saginaw 4 Speed transmissionGood working condition. Chrysler used both a 2. The Gear Box is your online source for t56 transmission parts,t5 transmission parts,borg warner t56,muncie transmission,t10 transmission,super t10 transmission,3550 transmission parts,manual transmission parts,t56 transmission overhaul kit, t56 transmission rebuild,rebuilding a transmission,transmission shift fork,t56 synchronizer assembly,t56 transmission gears,Corvette T56 transmission Rear Axle Ratio - 2011 Chevy Silverado 1500. 3,4spd auto trans,autotrac 4wd, P265/75R16 tires. Automatic Transmission Identification and Information (Everything you wanted to know and keep asking!) Gear Ratios of Popular GM Transmissions GM Muncie 4-Speed Decoding The Muncie 4-speed transmission was used with many different GM models and engine combinations from 1963 through 1974. 6L80E Gear Ratios The 6L80E uses four under drive gears and two overdrive gears. I have tried looking it up with the RPO code, but all I can find is GQ1=standard axle ratio. 79, 2. 55 ratio. 23 min 3. (example: P7A14- Muncie 1967, Jan 14) Muncies assembly codes are model year. How to determine what gear ratio is under a car is a question that I get asked quite often. 2" ring gear. Mar 31, 2014 · your obviously going to need to consider tire diameter, rear gear ratio and transmission gearing, generally your want the first gear in the transmission multiplied times the rear differential gear ratio to fall in the 10:1-10. Mopar A833 Manual Transmission Identification and Gear Ratios There are two basic types of the New Process A-833 transmissions used by Mopar muscle cars. A=M20 B=M21, C=M22) The codes are: B for Buick, C for Buffalo, G for Chevrolet-Gear and Axle, K or M for GM of Canada, O for Oldsmobile, P for Pontiac and W for Warren. 1982 to 1984: 7. 4375-inch left-hand thread on all 8. 56 means that as the axle turns one whole circle the driveshaft turns 4. It is located on the right  Using the charts below, you will be able to learn alot about the rear differential in your classic full size Chevy. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. org Ford rear ends sometimes had tags under one of the carrier bolts that had the ratio and a code for being a LSD or not. Rather than the normal door jam/glove box sticker showing the RPO codes or Service Parts ID code, my truck has a QR code. You need 3. It will have 37 ring gear teeth and 9 pinion gear teeth. Most of my driving is in the city but PONTIAC Axle Gear Codes Wallace Racing Code Location. Visit Mike Anderson Chevy Merrillville in Merrillville IN serving Hobart, Michigan City and Schererville #1GCGTDEN9L1150995 New 2020 Chevrolet Silverado 1500 Custom Trail Boss 4D Crew Cab for sale - only $42,673. 0, 5 speed, procomp 5. 42, or does the min or max number represent the ratio? This is from the decoder: Axle Ratio (:1) - Rear 3. 5-inch 10-bolt closely resembles the 8. 6th gear 0. 3RNB 3100 Buick, Pontiac W platform 3. All of these axles take different parts so we need to properly identify the axle you have to get you the right part. LUBRICANT ONLY" while replacement tags like those shown reads, "USE LIMITED SLIP DIFF. Codes can be cleared by The NV4500 is found in GMC & Dodge trucks. 90, 3. 73, and 4. This number  Engine/Tranny/RearEnd/Gear Ratio Combos So for example if you are looking for a 8. e. 625 inch ring gear, 26 spline axle 1990 to 1992: 7. The GM Hydra-Matic was a success and installed in the majority of GM models by 1950. The distance between the bottom center bolt in the cover and its adjacent bolts is 3 1/4 inches. It has a film strength second to none. 73 gear ratio i need to remove and replace front differential on a 2001 chevy taho 3. Gear Ratio and Tire Size Chart NEXT PAGE This gear ratio and tire diameter chart is meant to give you an approximation of ideal RPMs at highway speed (65 mph) for three situations: fuel economy, every day driving and increased towing power. Again the 55 and 56 automatic had a round tag that indicated 3. 7 and nv4500 No tag on the cover, and these are the only stamping What is my member ID? Reverting Back to Stock Tune with the SCT X4/SF4 Tuner; Is my factory tune saved & can I revert back to stock? Mustang Tuning Benefits: Automatic VS Manual Transmissions; How do I verify my rear end gear ratio? How do I verify my rear end gear ratio? This was accomplished by installing the 16:1 ratio steering box in the car. 42 gears and posi, you can find it in a v6 blazer 2wd  23 Apr 2003 Read Chevy High Performance magazine's technical article on calculating gear ratios. A Chevy 3/4 ton pick-up may have a 14 bolt semi-float rear axle or a 14 bolt full-floating axle. 56 I Intend to use this article to gather all the info and pics I can find on the venerable GM "corporate" 14 Bolt (14b) full-floating rear axle, also referred to as the 10. 41, 2. Visit Ressler Motors in Bozeman MT serving Bozeman, Butte and Helena #1GCPTEE19L1134962 Penske Chevrolet 3210 E. GM Ring & Pinion Gear Set; Ratio: 3. 10 respectively. If you take a few moments to study the gear chart for your transmission and rear end ratio combination you will se why this product is so popular. As it is a used vehicle with no history, how can I find out? Jim The gear ratio codes are located on the front passenger side of the differential as shown in the illustration below. and you no the epa is a bunch of crap when the did a road test i think with road and track on a actual road the 6 cylinder got a little over 16 and the 400 hp ss traiblazergot 15 i own the ss and love even at 80 it will go faster then you count you have to The New Venture Gear NV3500 at a glance. This number is stamped on the forward facing passenger side axle tube. 43:1 ratios. I am looking at two Chevy Silverado 1500 3dr ext. 71:1; 4th 1:1 ratio, and a 27% overdrive. 5 & 7. Chevrolet GM 8. All had 200-4R's. just like the 10 bolt, and 12 bolt gm rears. For example, a 3. The standard ratio also is biased more toward fuel economy. 42 RATIO Mar 13, 2018 · There are several differentials for the 10-bolt rearend. Indianapolis. A visual chart of different GM/Chevrolet rear ends is found on Ring & Pinion's differential types web page (see References). The gear set will bolt right into your axel housing. Jul 24, 2013 · If it’s a daily driver, chances are you’ll want to keep your gear ratio at 3. The gear ratios are more closely spaced to help improve fuel economy. This will help you pick the right size tires, transmission and gear ratio combination for your classic. 35: 1. The M-22 was only produced in a close-ratio version, so it will not appear on models with high rear-axle ratios (3. Good working condition 12 bolt 5 Lug Rear End for your 1973-1980 Chevrolet 1/2 ton Truck GM55 3896839 3. 62, HC3=5. 10 ratio. 0 has a . Nov 11, 2015 · The 3. 87. 00 Is there a place I can look to find the gear ratio for ther rear end of my 1964 c10 stepside truck? It has a 12 bolt rear end in it. Some users have reported that the 4. It comes with bolt-in axles. The Hydra-Matic 6L80 (production code MYC) is a six-speed automatic transmission produced by General Motors for use in rear- and rear-biased all-wheel-drive vehicles with a longitudinal powertrain here is a close-up of a 14 bolt gm rear end. The only difference is the rear gear ratios 3:73 vs 4. It definitely has a GM bellhousing pattern, although it could be Pontiac, or an Olds. 00: Third gear on cluster has 25 teeth: 1: 2. Exact identification of a NWC T5 that has been removed from the donor truck, can be confirmed by the checking the little ID tag on the drivers side of the manual box. 29 FLQB 245mm 163 NoIMS Chevrolet Transmission Dimensions Dimension "C" is the distance from the bellhousing to the center of the transmission mounting pad. 23; Teeth: 42-13; Series: 3. The 10-bolt differential cover is located on the rear of the axle and is an 11-inch x 10. You should be looking for a third member,Pumpkin/ Gearset from a 1967thru 1972 chevy/GMC 3/4 ton or 1 ton with auto tranny. May 21, 2019 · Gm 10 Bolt Gear Ratio Identification. 8. I am trying to identify what my gear ratio is in my rear axle, without having to tear it apart. If you're undertaking a Muncie transmission T10 speedometer gear replacement or need a T5 speedometer drive gear for a repair job, we've got a full line of quality pencil speedometer gears and speedo accessory parts here, custom manufactured by Transolutions and ready for immediate delivery (usually shipped within 24 to 48 hours). Ring Gear Bolts: (10) 3/8 x 24 RH Rear Axle Identification and Decoding Identify the gear ratio, the build date, the plant where it was assembled the work shift when it was assembled, and positraction source - if equipped. 57. now count how many times the u-joint on your rear end spins for one revolution of the tire. So, 50 is multiplied by 336 to equal 16,800. But from what I have read the insides will fit into a 4t40e trans with little modification. The 1964 Chevy C60 dump truck that I am restoring has a New Process 540C 5-speed manual transmission. All you need is a jack, some jackstands, and knowing how to count helps too. That 10. The standard axle ratio for Chevrolet pickup trucks is chosen to balance performance, capability and fuel economy, according to the company. 36). the gear tag will read like this 4. In other words, if the drive shaft turns 3 & 3/4 turns, you probably have a 3. 29/1. 84 first gearLooks great inside and comes complete with Hurst Competition Shifter and linkage see picsThe transmission shifts through all gears as it should. 73 (or numerically higher), it usually came with a close-ratio transmission. A standard transmission had no tag and was a 3. We also like Mobil One 75-90 gear lube because it reduces differential oil temperatures compared to the GM lube. Rear axle gears ratio identification Chevrolet pickup 1982? The Gear Ratio of the Chevrolet Silverado 2002 is estimated to be about 4. over gear ratio X 336. Box 40319). by Michael Dickens The New Venture Gear 4500, a 5-speed manual transmission manufactured by New Venture Gear, was used in General Motors and Chrysler products from 1992-2007. 09 or 45-11 or sometimes both of these #s if it is a 4. 6somthing and the 4t45e has 4 different final drive ratios from 3. The only way to retrive trouble codes is with a scanner such as Tech 2 , snap-on, otc or equivelent. Free online flash calculators for determin ring and pinio ratio, final drive ratio and gm powerglide gear ratios. They differ greatly from previous Dana 70 front axles,  The 10. ) Mopar A833 Manual Transmission Identification and Gear Ratios There are two basic types of the New Process A-833 transmissions used by Mopar muscle cars. 5-inch differentials. I just typed my VIN in here, and according to the equipment tab, the truck has a rear axle ratio of 3. The manual says there are 3 gear sets that it could be. For street and strip applications, a popular choice ranges between 3. 23, 3. Also the 55-62 Corvette standard ratio was 3. 36 rear axle gear ratio coupled with the 3. 73-5. 10's now and man will she get up and go or pull a Boat or U-hual with ease. 3L V8 Engine, Requires (K5L) Heavy-Duty Cooling Package) Option 2 It is really helpful to learn more about gear ratios and how to change out the rear end ones. the pinion. It is a very important issue in terms of both highway and off road . A bolt-in installation. Visit #1 Cochran in Monroeville PA #1GCPYCEF4LZ147704 New 2020 Chevrolet Sonic LT 4dr Car for sale - only $18,495. SHARE POST #1. The M-22 close-ratio transmission is easily identified internally from the M-20 and M-21 versions by the angle of the gear teeth. 73 driveshaft rotations to turn your tires once around. 1971-1975 : Front of Right hand (passenger) tube,about 3" from carrier; 1970 : W/C-lock axles-Front of Right hand (passenger) tube,about 3" from carrier GM/CHEVROLET FINAL DRIVE RATIOS It is the gear under your seat that counts. 86 FDHB 245mm 180 YesIMS. 795 for 5th gear , 2. Complete detailed instructions included. RE: how to read the vehicle codes on chevy trucks to determine gear ratio of rear end GM/CHEVROLET FINAL DRIVE RATIOS. The BOM will identify the model number, the gear ratio, the type of differential, and all component parts. Fits 1965-77 Chevy Impala, Chevelle, Camaro, Nova1, Pontiac GTO, Firebird and many GM A, F, X body vehicles. If you request, I can send a pic of the ring /pinion part number. Strong and reliable units with powerful gear ratios. 42 or 3. 36 x 3. 70 as the 55-56, probably because of the 15 inch tires, also with no tag. 29 37/33 2. Most of the late model builds had anti-lock brakes installed. The first two letters indicate the gear-ratio code, the third letter notes the build plant, and three numbers designate the build day from 001 to 365. C3 Corvette Transmission Identification Codes Transmission Production Code Locations 3-Speed - 1968 and 1969: Stamping located on the machined surface on the left side of the case, just below and rear of cover. 6L engine was the main source of power in smaller GM sport utility vehicles. # of grooves: 1st: 2nd: 3rd: 4th: Notes: 0: 2. The Getrag 238 offers a 4. Posted on May 21, 2019 by Fattana. GM 7. 54:1 ratio and a 2. 5 MILLION GM Truck Enthusiasts every month who use GM-Trucks. 20:1 in the Corvettes, initially, and added the 2. 29 ratio Over the manufacturing life Of the H-body, several Gear ratios were offered in either a 6. About Sterndrive Replacement. Use this chart to determine your gear ratio before ordering a Mercruiser R-Style, Alpha 1 or Alpha 1 Gen 2 sterndrive. The Hydra-Matic 6L90 (production code MYD) is a six-speed automatic transmission produced by General Motors for use in rear- and rear-biased all-wheel-drive vehicles with a longitudinal powertrain The NV4500 is found in GMC & Dodge trucks. Image credit where credit is due, I could not find an origin. Dec 19, 2016 · I have the following information from the Chevrolet VIN Decoder. 27 transmission first gear ratio multiplies providing a 10. Easy to use parts catalog. Visit Quirk Chevrolet Manchester in Manchester NH serving Manchester, Nashua and Derry #1G1JD5SB2L4103737 New 2020 Chevrolet Silverado 1500 Custom Trail Boss 4D Crew Cab for sale - only $38,852. What is rear end gear ratio? - Answered by a verified Chevy Mechanic All 67-74 Muncies carry a producion code number stamped vertically on right side of case beginning with "P". chevy gear ratio identification

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