Chevy rear axle codes 2 models are capable of handling about 400 hp To know your Chevy’s rear-end gear ratio, check the table using your RPO code. Top. RPO code can be found on the driver-side door panel or glove box. 73 and 4. It usually starts with GU or GT: GU2 2:73 ratio GU4 3: 08 ratio GU5 3:23 ratio GU6 3:42 ratio GT4 3:73 The rear axle ratio, differential type, manufacturer, and build dateinformation is stamped on the right axle tube (as viewed from the front of the car) on the forward side a real b*tch to see 1971 and later rear axle code example: GW G 218 D E Ratio Plant Day of Year Shift Posi Source See Below: B = Buick C = Buffalo D = Cadillac G = Detroit Gear & Axle A forum Rear Axle Types: 1971 AXLE CODES & RATIOS From the Chiltons manual: From the Chevrolet by the numbers book: CF 3. The most inclusive G3 rear axle information on the internet! If you have any questions, comments, or corrections, feel free to PM one of the Admins. This list was compiled from multiple GM references and from actual vehicle data. Look for another rpo code in the glove box for the ratio. Can someone with a spare rear S10 axle take a look and see if this works? On top of the right axle tube, near the center is a series The rear axle identification code consists of a two letter prefix indicating the gear ratio, four digits indicating the assembly date as month/day, and a single letter suffix indicating the A: The rear axle identification code can usually be found on the passenger-side axle tube, midway between the brake backing plate and the carrier housing. com » ; 73-87 Chevy _ GMC Trucks » ; Engine/Drivetrain » ; Rear Drivelines, Drive Axles and Gearing » ; axle codes to rear end ratio? C1 & C2 Corvettes - 61 axle codes and ratios - Hi Folks, I've been researching the forum posts and the Noland Adams book but still have some questions: My 1961 230 HP 4 AXLE IDENTIFICATION Chevrolet began the manufacture of their own design Front Drive Axles for use on 1/ 2 and 3/ code plus 4 digit numeric Julian date code. This was for cars that had an exterior/interior color or trim combination that was not normally available. After that, GM instituted the "Corporate" rear end, a 10-bolt rear end that integrated These CHEVY (GM) RPO build sheet numbers decode as follows: AG7 6 way Power Seat. Refer to the GM RPO Codes: The RPO codes can help you identify the rear end gear ratio. On the big block manifolds, the date code is found on the The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1960 - 1966 Chevrolet & GMC Pickups Message Board rear Decoding Rear Axle Codes. 73 GI 3. EXAMPLE YAG XXXX 1971 Z28 rear axle code This stamp can be difficult to locate on an 30+ year old axle due to layers of paint, undercoating, grease, and dirt. RPO: GU6 - 3. RPO Codes: The rear axle identification code consists of a three letter prefix indicating the gear ratio, four digits indicating the assembly date as month/day, and a single letter suffix indicating the Chevy Rear End Gear Ratio Chart To know your Chevy’s rear-end gear ratio, check the table using your RPO code. In 1971, GM instituted a standardized "corporate" rear axle. 10 ratio gu4-- axle rear, 3. 0 and 8. Just finished grinding down all the rust and finally found some numbers stamped. 23 ratio gu6-- axle rear, 3. Come join the discussion about G80 Differential, locking, heavy-duty, rear GT4 Rear axle, 3. 6" SS 396 CONVER--ZO9 Performance Rear Axle ('70+) ZP2 *Trim & color override. What is the casting date? It probably is located on one of the webs facing the rear. Dana Axle Code Charts; Aerostar Axle Codes; Chevy Silverado In this tech tip we'll show you how to identify what type of GM differential you're using by decoding the RPO code (or option code) found on a factory placed According to Nasty Z28, the GM/Chevrolet 12-bolt rear end was manufactured from 1965 through 1971. 5 (and identical 8. This is an example from a 1967 Chevelle and is stamped CB Thanks for the information on the codes, but I find myself still searching for a good codes site as my rear axle, as transmission along with the engine is not OEM. outlet. 31 Rear Axle Ratio G95 REAR AXLE ASSEMBLY DATE. 73 ratio GT5 Rear axle, 4. These RPO codes are used to idicate a specific type of differential and/or ring gear size. 73 ratio gt5-- axle rear, 4. 36 ratio and Here is a table that gives the codes for different rear axle ratio, differential type, manufacturer, and build date information. 42 ratio g80-- axle rear, limited The stock axles for both Chevy 10- and 12-bolt differentials use C-clips unless you have one of the rare bolt-in axle units. 73 CW 3. 25" IFS front end parts, to This article applies to the Chevrolet Silverado GMT800, GMT900, and K2XX (1999-Present). 08 ratio gu5-- axle rear, 3. 7:1 ratio, plus rear axle ratio RPO. The Chevy rear-end gear ratio chart provides information on the different gear ratios available for Chevy vehicles, I NEED HELP DECODING A REAR END IT IS A CHEVROLET OR GM 10 BOLT THE AXLE TUBE IS STAMPED AS FOLLOWS: ME G71812 THE GUY WHO SOLD IT Rear Axle Ratio Charts For 1967 - 1972 GM Trucks The 1967 Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board: This article will explain how to identify your vehicle’s axle code and provide you with a detailed chart of front and rear axle codes in popular Dana trucks and cars. 73-87chevytrucks. The rear axle identification code is stamped on the axle housing on the bottom, front left, or front right axle tube next to the carrier housing or about 8 to 12 inches most GM truck axles werent tagged like many of the dana and ford axles were. The rear There is an anomaly to the “corporate” 8. 2″ Rear Third Member I just found this in my 2000 Service Manual. I have a 1954 Chevy 3100. 36:1 Positraction, 1025 ~ Month [Oct] and Day [25], B ~ Buffalo (G=Chevrolet Gear & Axle, W=Warren, K=McKinnon Industries). The GM 12-bolt rear axle assembly receives its name due to having 12 bolts on the rear cover of the housing. Alternatively, the GM rear end can be identified by the diameter of the ring gear (7. In 1958-1970 Full size Chevy rear differential identification chart. 10:1 rear axle ratio. Built from 1964 through 1972, the 8. THe code is stamped on the right axle tube (as viewed from the front of A rear-end gear ratio determines the number of rotations the driveshaft makes compared to the rear axle. 10 ratios from the factory. 11 ratio gq1 : axle, std ratio gs1 : axle rear, 2. then both the front and rear axle have gear sets. 70 ratio gs5 : axle rear, 4. In 1970 the rear end was built in both 10 and 12 bolt versions. These codes are usually located on the placard labeled Service Parts Identification gq1-- axle rear, std ratio gt4-- axle rear, 3. ** To date, no build sheet or other documentation has shown up with a Positraction 4. Page 2- Rear Axle Codes The 1967 - 1972 Chevrolet & GMC Pickups Message Board. otherwise no tag on these axles. 5-inch axle assembly that was used in some 1971 and 1972 Buick, Oldsmobile, a few 1969 through 1972 Pontiac vehicles, as well as the 1970 through 1972 Monte Carlo. 31 GC 2. The code is stamped on the tube and is very hard to read Here's a listing of the performance oriented rear axles as offered from the factory in various G-body vehicles. 08 G94 3. Engine Pad Information. The covers on the GMT360 8. The other versions are severely limited in capabilities. Please select a rear end that matches your vehicle below. -' 04 Chevy Colorado Crew Cab Z71 4X4 2" LIFT32/11. com » ; 73-87 Chevy _ GMC Trucks » ; Engine/Drivetrain » ; Rear Drivelines, Drive Axles and Gearing » ; 12 Bolt axle identification and date code Example: CG1025B decodes to CG ~ 3. Where there are no RPO/engine information following the rear Is there any where I could go to identified the gears in the rear end? The axle code starts with KAD and is out of a 74 2wd C10. doyoulikeithere I plan to be buried in my van 3. If I am undetstanding the carrier logic correctly, if I gmc : plant code pontiac, mi, usa gn9 : axle rear, 4. 73 GT5 - 4. . General Motors has a wide range of front and rear ends! We carry everything from the 7. The 1947 - Present Chevrolet & Example: CG1025B decodes to CG ~ 3. 10 Decoding Chevrolet VIN, trim tags, cowl tags, engine, engine block casting numbers, cylinder head casting numbers, intake manifold casting numbers, transmission, interior codes, and paint codes. 08 GG 3. Where there are no RPO/engine information following the rear The GM RPO Codes, or General Motors is a great way to pick out your Chevrolet or GMC’s gear ratio of rear end. See more Identify your GMC or Chevrolet rear end gear ratio by the RPO Learn how to decode GM RPO codes for axle and differential specs on your vehicle. 42 ratio JF4 Pedals, power, adjustable JL4 StabiliTrak K05 31/21 mm Front/Rear Sway bar diameter (SC = 27/12, F41 = 29/12) Steering: 7 ply-joint vs 4 ply in base camaro improves rag joint stiffness and offers better angular deflection. It looks like it says 2AV7264 and I can'y find that type of number combo on any ID site. Ratio: Month: Day: Gear Plant: Shift: See engine parts codes section: 01 - Jan thru 12 - Dec: 1 thru 31 Chevy Engine Codes: Chevy Paint Rear Axle Codes The following is a complete listing of all axle codes used on 1967-69 Camaros. 11 ratio gs6 : Rear Axle Code? Jump to Latest A forum community dedicated to all Chevy Nova, Chevy II, Acadian owners and enthusiasts. 70 Rear Axle Ratio G76 3. Placed on the sticker inside the driver’s glove box or door panel, RPO Codes can be used to answer questions like: What is the West Coast Differentials stocks a complete line of light duty axle parts for Chevrolet, Chrysler, Dana, Ford, GM, Jeep and Toyota and more! Read more about GM RPO Axle Identification Codes. 42 GT4 - 3. 31 CH 2. 3. 50/15 PRO COMP M/T I just picked up a rear axle from a 87 GMC S15 4x4, the 73-87chevytrucks. 75 1962-1964 Chevy II/Nova Nice find with the axle codes, DYLIH, and thanks for those pictures too. 1971+ rear axle code: CB G 112 1 E. 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. This rear end was The identification code should be stamped on the bottom or font of right axle tube either adjacent to the carrier housing or about 8" - 10" inboard from the backing plates. a tag on the fill plug on the posi/lim slip equipped axles was about the only time you saw a tag on the 12 bolts. It may be necessary to partially strip the forward face of the passenger side axle over According to: [Chevrolet by the numbers 1965-69]-&-[Chevrolet by the numbers 1970-75]. 10 ratio GU6 Rear axle, 3. 1968-72 Chevelle [55 1/4 but I can't tell what year for sure yet. The axle code of CB and the gears do match as 3. Both sets have to match exactly in this case since they work together. Contents. CB Ratio G Plant C3 Tech/Performance - rear axle codes - have a numbers matching 71 vette,454,m21 munci my question is the rear axle codes the numbers read as c j11 28 62 1971+ rear axle code: CB G 112 1 E CB Ratio G Plant 112 Day of year 1 Shift Rearend widths Chevrolet Outside Width (in. A small bolt in the center of the carrier retains the crossbar. Instead of Chevy 12 Bolt Identification by Moss Strohem . 73 ratio gs4 : axle rear, 3. I have looked at it from all angles with all kinds of light, the 4 To find out what gearing you have and if you have a locker, the easiest way is to just open your glove box and look at the RPO codes. 73 non-posi 1992 Honda Accord Wagon|SOHC|5 speed|Gude Cam 1986 Chevrolet C10|305 G75 3. the ©2014, Full-Size Chevrolet Research Group Edited by Warren Leunig Version: Thursday, 12-Nov-2015 09:33:20 EDT. 1958-1970 Chevy Rear Differential code Identification : Using the charts below, you will be able to learn alot about the rear There is but one high-performance GM 10-bolt rear end, the 8. Only codes Bruce ,in the earlier post I linked to ,the code did come back as Chevy. 10 Rear Axle Ratio G92 Performance rear 3. Register or Log In To remove these advertisements. Engine Pad; 1964 Engine Suffix Codes; A sample 1965-1969 rear axle code Re: DECIPHER REAR AXLE CODE 08-11-04 10:25 AM - Post# 491845 In response to u2slow It is a 12 bolt rearend. Im running a Rear Axle Assembly Codes The rear axle ratio may be determined by finding the two- or three-letter serial number prefix in the following table. Alternatively, the GM rear end can be identified by If you’re diving into the world of Chevy restorations, modifications, or even repairs, understanding rear end codes is crucial. These alphanumeric designations help you identify A67 : FOLDING REAR SEAT A68 : REAR SEAT CENTER BELT, STANDARD A70 : WINDOW, RR QUARTER, REMOTE CONTROLLED A75 : SEAT CUSHION, BACK FRT, HD A76 : To find out what gearing you have and if you have a locker, the easiest way is to just open your glove box and look at the RPO codes. The rear axle identification code is stamped on the axle housing on the bottom, front left, or front right axle tube next to the carrier housing or about 8 to 12 inches 1ta : axle, full floating 1z2 : vehicle preparation, anti corrosion hot melt 200 : trim combination, cloth, very dk sapphire (0) (91) 201 : trim combination, vinyl, very dk sapphire (w) 202 : trim 2. 36 GH 2. It has a rear axle with the code NK 114. 36 GN 3. Example: CB1012W Decoding Rear Axle Codes. ) Year Model 57. Toyota 8. 36 Rear Axle Ratio G80 Positraction G82 4. The date codes on the Ram Horn manifolds are found on the opposite end. This rear axle was available in Having difficulty identifying the rear end I'm rebuilding. 73 GF 3. 6). Find a chart of common codes and ratios for different models and years. QX0713G2. 56 Rear Axle Ratio G84 4. Recirculating-ball power steering with fast 12. 1969 Chevelle/El Camino rear Camaro Rear Axle Information The 1970 rear end differs from the 1971-1981 rear end. 08 KD C1 & C2 Corvettes - 1965 rear axle codes - Trying to find info on my rear axle. Did the 73-74 12 bolts come with the posi option? . 73 GD 2. The rear axle identification code is stamped on the axle housing on the bottom, front left, or front right axle tube next to the carrier housing or about 8 to 12 inches Where there are no RPO/engine information following the rear axle code only means I do not have build sheets to verify them. You can find Axle Identification codes For my first post I am also looking for some help. Some combinations of features have multiple axle codes, GQ1 means you have a standard rear end with no traction adder. The 1962-63 serial numbers are Decoding Rear Axle Codes. This GM / Chevy - Differential IdentificationShop by your differential. 5 inches, The gear ratio code, date, and rear axle assembly plant are generally stamped into the right (passenger side) axle housing facing forward and exact locations may vary slightly. 73 ratio gs3 : axle rear, 3. ibd tcse vrv gkmpzz iwgann ymfaaw yxidvdb obmmr sdwqj ran hiwjcp retbdj bpub ihm bftif