The standard axle ratio for chevrolet pickup trucks is chosen to balance. I cant guarantee this list or any part of it to be 100% accurate. These are all of the rpo codes for the coloradocanyon. Gm rpo axle code notes these rpo codes are used to idicate a specific type of differential andor ring gear size. Nov 16, 2014 gm rear axle install, buick, chevrolet, oldsmobile. The rpo codes identify the base model of the vehicle along with options such as paint color, engine, infotainment system, wheels, etc. This code will be stamped on the right front inboard side, letters and numerals 14 high, 3 outboard of carrier andor are located on a metal tag attached to a cover bolt. 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. As options on the vehicle change, you can maintain this list by adding and deleting applicable rpos.
Depending on the vehicle you have selected, your system configuration, or your region, some features may not be available. Note that this list is not yet complete, im still working on it and ill try to announce. Certain models, options or equipment may be available only to customers who qualify as fleet or commercial customers. Macs hot rod shop is filled with nostalgia and friends. Besides the codes stamped into the axle tubes, some carried ratio andor posi tags as well as the vehicle having a plate containing coded info on the rearend. Each rpo code is a combination of three alphanumeric characters like z71 that refers to a specific option or modification to the vehicle as built during production. Rpo codes, in my opinion, are very hard to get specific with and remain.
Rear axle assembly codes the rear axle ratio may be determined by finding the two or threeletter serial number prefix in the following table. This online order reference guide is intended solely for business use by gm dealers. Audio system, chevrolet mylink radio with 8 diagonal color touchscreen, amfm stereo. Decoding chevrolet vin, trim tags, cowl tags, engine, engine block casting. 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.
The gm 10bolt differential was featured in both truck and passenger vehicle applications. Its best to compare the axle options within a single brand to see how each one affects. The gear ratio codes are located on the front passenger side of the differential as shown in the illustration below. Axle identification is stamped on differential carrier along with date of manufacture. Our service center provides mechanic services of skilled and trained mechanics to assist in keeping your vehicle in top running order.
Classic chevy truck rpo codes and options cj pony parts. Apr, 2018 most gm trucks from 1961 through 1972 used a rear suspension consisting of two trailingarms with coil springs. The ls5 engine was the base engine for the z15 option. The 196263 serial numbers are located on the front, right side of the differential carrier. Another thing to consider is car axles will not work in a truck housing. B for buick, c for buffalo, g for chevroletgear and axle, k or m for gm of canada, o for oldsmobile, p for pontiac and w for warren. Gm rpo codes, or general motors regular production option codes.
To find the axle gear ratio of any gm vehicle, locate the rpo sticker typically located in the glove box and. Here is how to read the rpo vehicle option codes in a gmc or chevrolet general motors truck. Recently i noticed that when i turned a corner i could hear my rear brake pads squealing, but not when i was going straight. The land of enchantment gtos club is new mexicos first and only chapter member of the gto association of america national gto club. Not all regular production options rpo were available for all years from 1964 through 1972. I couldnt find anything about the front differential so im assuming it is also a 4. This list was compiled from multiple gm references and from actual vehicle data. The rear axle identification code consists of at least a two letter prefix. The rpo vehicle option codes are printed on a sticker in the glove box of your truck. Quick links to decode engine suffix codes, interior codes, paint codes, etc. A jan, b feb, c mar, d apr, e may, f jun g july, h aug, i sep, j oct, k nov, l dec. Wclock axlesfront of right hand passenger tube,about 3 from carrier. The first 3 digits indicate the axle code, the next one indicates manufacturer bbuick, oolds, cchevy, ppontiac, the next is julian date it was built and the last it the shift it was made on. Chevy 10 and 12bolt axle assemblies have been standard equipment on gm passenger cars, muscle cars, and trucks for decades.
Take a moment to drop by the store and shop our products. Some combinations of features have multiple axle codes, e. Dec 24, 2010 rear differential 81 k5 blazer rpo code 1gq1 need gear ratio answered by a verified chevy mechanic we use cookies to give you the best possible experience on our website. Pontiac axle gear codes wallace racing code location. There is an anomaly in that statement though, as leaf springs were an available option. Filthy motorsports offers a wide range of oem and aftermarket parts for just about every axle out there so whether youre rebuilding an old dana 44 for your jeep cj8, building a ford 9 inch for your drag racer, or putting together a fully custom dana 60 for your rock crawler, we have the parts you need to make it happen. The rpo codes identify the base model of the vehicle along with options. I am just getting started and will add to it as more become available to me. The l34 engine was the base engine with the z25 option and was not available separately as an option so the number for the l34 engine would be the same as the z25 option less any l78 optional engines 53599214451455. Rear differential 81 k5 blazer rpo code 1gq1 need gear ratio. A traction lok rear axle was optional, and the 428 cjscj included a. Where can i find a chart that has the stamped codes for a 10 bolt truck rear axle. Decoding chevrolet vin, trim tags, cowl tags, engine, engine block casting numbers. You can find what you have in your truck by looking at the list in your glovebox and then comparing it to this list.
The rear axle identification code consists of a two letter prefix indicating the gear. Gm uses alphanumeric rpo codes so it should have a number in there somewhere. The rugged, reliable, and efficient chevy 12bolt has established itself as the preeminent rear differential for gm muscle cars since. Welcome to the general motors online order reference guide. In this tech tip well show you how to identify what type of gm differential youre using by decoding the rpo code or option code found on a factory placed sticker in the interior of your vehicle.
Gm rpo codes axle ratio identification west coast differentials. They are listed on a sticker in your glove compartment for the early years and on the drivers side door for the later years. Other codes like m21 have been used for both muncie and borg. Ford rear axle assembly identification stamped axle codes ford used a vast array of rear ends over the years. Campbell youre 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, youre going to have to do more leg work. After 1972, general motors was only installing its 10bolt rearend in cars, but the 12bolt remained an option for trucks until.
Options rpo codes 4th generation camaro history by. Pontiac differential codes year model rear ratio tooth count std code posi code 1968 big pontiac 4. These rear ends were made for many years and are plentiful and inexpensive to buy in junkyards all over. Feb 15, 2012 i happened to look at my sticker yesterday and saw no g80, i always assumed g80frown. Please select the information you would like to view. 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.
Chevy truck forum silverado sierra gmc truck forums. Ive been asking many gear questions as some of you may know, wondering if 4. In the site click on the blue text links with your mouse to get additional option information. The following is a complete list of gm rpo axle codes for chevy and gmc vehicles starting with the letter f. For most chevy vehicles, your rpo codes will be on a placard in the glove box. A complete list of aam, amc, chrysler, dana spicer, ford, gm. Hey guys i need some help iding this axle ive got a gm 10 bolt im trying to identifyall the codes i could find are 1251502 k227 gm49. Transmission and gear ratio identification gm truck club. In lieu of having a way to run vins at least for now that ive seen, ive taken it on myself to catalog rpo option codes. Certain gm 10bolt rear end differentials utilize limited slip. Its slowgoing if your sticker has a lot of codes, but its better than nothing.
Rear axle codes the following is a complete listing of all axle codes used on 196769 camaros. We have 3 bays serviceinstallation and offer guaranteed workmanship and parts we can change your chevy 8. Ford saw the need to create performance mustangs to compete with gm and. In all gm light duty trucks, the g80 code indicates the vehicle is installed with the eaton g80 locking rear differential. Gm rpo axle code list gm axle gear ratio lookup crawlpedia. Contact us for a how to measure guide, if you cant find your application, or to customize the order. Aam has developed a series of axle and driveshaft components to make it easier for the installer to perform a repair or a complete replacement job. In 1973, chevrolet pickups began using leaf springs as standard equipment. A rear end of a car is the combination of the rear axle and differential gears located at the rear of the vehicle encased in either a castiron or aluminum housing. How to read a chevrolet truck vin number for the axle. Factory useage if a rear axle is known to be the original axle installed by the factory and the vehicle has a spid, a simple method to determine the rear axle ratio would be to lookup the axle rpo. Front of right hand passenger tube,about 3 from carrier. Dutchman is a family owned and operated business since the early 70s, and for over 40 years, the dutchman has focused on building strong customer relationships by offering quality products at a fair price, timely delivery, and exceptional friendly customer.
The ford mustang mach 1 is a performanceoriented option package of the ford mustang. I also have a picture of my rear, in my yahoo pictures, click my camera icon. A manufacturer code will be metal stamped on the axle tube adjacent to the carrier for field identification. Using only authentic oe approved and tested parts, power to deliver components will provide the proper fit and function required to avoid noise, vibration and harshness that leads to customer satisfaction. I happened to look at my sticker yesterday and saw no g80, i always assumed g80. The problem is it came without drums so im trying to get a disc kit for it or replacement drums but im not sure which ones i needi also dont have the axle here now so i cant take any measurements off it. Okay, one last thing, g80 means axle positive traction, limited slip. One option we have been pursuing is a kind of oddball gm rearend that was made for the heavier gm cars in the 70s.
The ls6 engine was optional when ordering the z15 option. This isnt a complete list of all the rpo codes for our trucks. B for buick, c for buffalo, g for chevroletgear and axle, k or m for gm of canada, o for oldsmobile, p. Our club boasts of over 30 members and every year of the gto from the classics 196474 to the new generation 200406. Rpo codes are what tell you what options your camaro came with. Identify your gmc or chevrolet rear end gear ratio by the rpo codes, usually located on the placard labeled service parts identification inside the. When servicing the rear axle, the third letter of the code must be known in order to determine the identity of the rear axle manufacturer. Ok so does anyone have a book to tell what codes are what for the first two three digits. Filthy motorsports carries a wide range of parts, gears, and upgrades for the gm 8. Yes i know how to do it but it is under a truck and cannot turn it so i took the codes. Apr 22, 2010 anyone have a link to axle codes i know it is stamped on the tube, but where is the link that shows the code and then what rear end ratio that is. Download edmunds app on apple app store download edmunds app on. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. There are only 2 surefire ways ive found to make sure it is a 8.
Some rpo codes were for internal accounting and not a check box option such as b22, c56, yf8, etc. Gm rpo codes, or general motors regular production option codes contain lots of valuable information about your gm vehicle. How to read gm truck rpo vehicle option codes youtube. Today i finally took the time to read my rpo codes in the glove box and came up with these two. How to read a chevrolet truck vin number for the axle ratio by jody l. Limited slip rearshad a tag on the differential cover that stated it need posi fluid. Chevrolet 12 ton, 34 ton and 1977 through 1991 blazer sport utility vehicles utilized the gm 10bolt differential in front axle fourwheel drive applications. The 1964 serial numbers are found on the bottom of the carrier. If you have some codes you dont see here, please send them to me and i will include them. How to choose the right axle ratio for your pickup truck edmunds. How to identify a chevy rear end by floyd drake iii a rear end of a car is the combination of the rear axle and differential gears located at the rear of the vehicle encased in either a castiron or aluminum housing. Decoding gm rpo codes for your differential differential.
Gak discussion in the hokey ass message board started by seymour, nov 9. With the catalog set by vin, rpos and vcvs codes associated with the vin are listed in alphabetical order on tabs in the vin information window. History and identification of chevy 10 and 12 bolt chevy. Code description eh6 wheelbase 168 inch eh8 wheelbase 170 inch eh9 wheelbase 172 inch ej0 convenience pkg utilmaster ej1 convenience pkg bluebird ej2 fleetwood body co,equipmentwith instrument panel cluster ej3 wheelbase 174 inch ej4 convenience pkg grummenolson. It converts the torque sent by the transmission, enabling the power transfer that drives the vehicle. Gm regular production option rpo master list use this information to interpret the rpo numbers on the vehicles service parts identification spid label. Rpo stands for regular production option and is general motors standard coding for vehicle configuration options. Finding a 12bolt rearend is a great stroke of luck. The rear axle came off of a 1991 chevy s10 two wheel drive truck. It looks like the one in the picture above with the inward scallops on the sides of the cover by the axle tubes. Cb g 112 1 e cb ratio, g plant, 112 112th day of year, 1 shift, e positraction sourcewhere would you find the actual ratio codes.
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