Gm 12 Bolt Rear End Identification

625" axle tube end to axle tube end. Since GM switched to the 8. The rear disc brake conversion kit adapts Cadillac Seville and Eldorado rear calipers and 11 inch rear rotors. These RPO codes are used to idicate a specific type of differential and/or ring gear size. 10 bolt BIA. Detailed Description: Rear End Filler Plug Original for 1947-72 Chevy Truck Fits 47-63 all and 64-72 3/4-1 ton and is the original style with original leather gasket made by the original supplier to Chevrolet. Can anyone help me identify this axle?. 12 BOLT TRUCK REAR END The differences are mainly with the pinion bearing size and the ratio/offset breakdowns (different carriers with certain ratios). This number is stamped on the forward facing passenger side axle tube. It is correct for 69 Camaro SS & Z/28, also 69 Nova SS. rear axle and prop shaft illustration page axle identification overleaf self—adjusting front brake 1 2- 4 rear axle details positraction 5 rear suspension 6- 8 self-adjusting rear brake 9 disc brake systems 10-12 axle identification 13-16 wheel discs 17-20. 55 rear end center section is an original used two-pinion type with cast arma-steel housing. Chevrolet used the division’s own 8. This means parts are not interchangeable, which can come back to bite you later if you buy the wrong assembly. 2" 10-Bolt Chevy 64-72 parts and get Free Shipping on orders over $99 at Speedway Motors, the Racing and Rodding Specialists. Add a center section,and what ever brakes you want including discs. 1962-67 Chevy Nova Ford 9" Rear End Housing and Axles, Mono Leaf. VIN:3GNCJPSB4KL383858. 5" commonly referred to as the 10 Bolt differential, this differential was utilized GM used this very popular differential in there full size Chevrolets, Chevelle, Chevy II, Camaro and and GTO/Firebird Pontiac products starting in 1970. Axle Guys is the second hand provider of a S10 8. And some stamped. New Cajun Red Tintcoat 2018 Chevrolet Malibu in-stock and for sale at McGrath Chevyland in Cedar Rapids, IA. 675 inches). 8 Inch Rearend. Traditional BOM’s are 6 digits followed by 1 or 2 digits and start with the numbers 60 or 61. It has the following codes : 3894860 NF , H288 , BV 0903G2 E. Assembly Plants. com as a daily part of their ownership experience. Before GM consolidated all of its rear axle production into what became known as “corporate” axles around 1971, each division placed its own versions underneath the passenger cars it produced. the smaller 14 bolt, with it's 9 1/2" ring gear, is a semi-floating design. American Axle & Manufacturing (AAM) has announced the availability of new rear axle components for several 2014 GM trucks and SUVs. You are here: Home Tech Articles Front / Rear Differentials Ford Rear Axle Identification - Page 01 Want to link to this site? Please save this banner to your hard drive to place on your webpage. Crown Automotive 8. 5 from a Grand National, 442 or Turbo Buick, Ford 8. 1955-1964 Chevy 3. 56 NEW GM 12 Bolt Truck Master Bearing/Installation kit FREE SHIPPING Parts include 1-year Factory Warranty Axle bearings and axles also available! Quick Performance Inc. It can be argued that all A-body 8-3/4 axles are small bolt-pattern, as the A-body 8-3/4 was built until '72 or so. Gm 12 Bolt Rear End Identification. I know american classic has the decoder but can these numbers tell me the ratio of the rearend without removing the cover?. Some pictures to help. 625” pinion diameter, 1. 1958-1970 Chevy Rear Differential code Identification Using the charts below, you will be able to learn alot about the rear differential in your classic full size Chevy. Camaro/Firebird 82-2002 9" Moser Bolt-In Rear End Assembly, Price will vary due to options, but starting price is $2300. One cable will be 37" long, end to end and the other will be 40. Complete GM "A" Body Rear End Complete GM 12 Bolt Rear End for 1964-72 GM "A" Body cars. 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. 12-Bolts to Glory The GM 12-bolt debuted in 1965 and was mass-produced until 1972. Technical Is this indeed a GM 12 bolt There might be some stamped numbers/letters on top of one of the axle tubes, which can help with ID. net: 1964-1972 Chevelle/El Camino generic rear axle information such as GM part numbers, rear end housing casting numbers & dates and wheel bolt identification. here is a close-up of a 14 bolt gm rear end. The rear end casting numbers are F215, GM4, and PA 0606 and also the 3852980N, also 12 bolt. 1962-67 Chevy Nova Ford 9" Rear End Housing and Axles, Mono Leaf. Axle housing is shipped with inner axle seal and seal housing. 2" Differential 1967, Rear Gear Redline Series Gear Oil by Yukon Gear & Axle®. For GM 12 bolt Only. 2 10 bolt rears axle tubes neck down on the ends, as the axles are are retained with c-clips inside the carrier sand do not have flared out axle tube ends. 75 thread bolts. CSI Automotive Sales, Service & Parts. 2" 10-Bolt Chevy 64-72 parts in-stock with same-day shipping. So what is out there is it. The proper setup using quality hi-performance parts is the only way to ensure that the time you spend setting up your vehicle is not wasted. We noticed that Moser equips virtually all of its new 12-bolt housingswith forged-steel, CNC-machined housing ends that retain the stock 10-and 12. the GM9 is probably some kind of corp casting stamp IDDon't think it matters much as far as you are concerned. Chevy, Ford, and Mopar rear axle widths. 875″ Differential Parts The information above is an excerpt from our Differential Parts Catalog. 5 rearend uses an oval cover and the housing has two small cast-in protrusions near two of the bottom cover bolts. 0 mercury engines. These adapters bolt to the pinion flange with 12mm x 1. The cover is almost perfectly round. NEW UPDATE 12/20/04 !!! Introduction. In other words, the guts of a Chevy rear end will not fit in an Olds rear end housing, and vice versa. Its a GM 12 bolt, number cast into the housing on the front passenger side is NF3896838. There are many different types, but we'll do a quick pass over the most common ones here. Differential Carrier Cases. The Camaro offered 2 kinds of rear-axles the ten bolt(8. GM 12 Bolt Truck $320. See complete information on Colorado rear axles here. 2" 10-Bolt Chevy 64-72 parts in-stock with same-day shipping. It has RV 0306 W 2 stamped on top of Passenger side axle housing. The gear ratio codes are located on the front passenger side of the differential as shown in the illustration below. You are here: Home Tech Articles Front / Rear Differentials Ford Rear Axle Identification - Page 01 Want to link to this site? Please save this banner to your hard drive to place on your webpage. Rear Axle Gears and Driveshaft. Project Big Bad Chevy One Ton Axle Swap: Trucks & 4x4 : Our big and bad Chevy pickup project gets a whole lot badder and stronger with the installation of stronger than the current 12-bolt we. GM flipped a coin on a lot of things it seems. Although it may not be as popular as a 9-inch Ford in drag race applications, the 12-bolt does have a number of plusses (not the least of which is decent strength when carefully prepped). These adapters bolt to the pinion flange with 12mm x 1. 3240 Thank you Chevy, gmc, c10, c20, c30, k10, k20, k30, 4x4, k5. Moser Engineering Rear Ends | 1978-1987 GM G-Body | Performance Moser Engineering Rear Ends for the 1978-1987 GM G-Body cars 12 Bolt - Housing & Axle Package. Please select a rear end that matches your vehicle below. If you know how to ID this it will help me thanks. Ring Gear Diameter: 8. The crossbar houses the load bolts that apply pressure to the bearing caps. The control arm-mounting ears on top of this 7. 875" 12 Bolt axle including ring and pinion sets, axle rebuilt kits and bearings, differential covers, upgraded axle shafts, heavy duty u-joints, oil, and more. It is the stamped identification number on a 12 bolt rear housing for a Chevy/GMC vehicle that measures 60. do NOT contact me with unsolicited services or offers. New, Used and OEM Automotive Parts - Large Inventory - Great Prices Chevy 10 12 Bolt Rear End Disc Brake Kit Chevelle El. 2-inch 10-bolt and 12-bolt axles, while the other divisions used. Unfairly, this axle has been the redheaded stepchild in the family of GM axles. How can I visually determine if the Posi carrier in my 12-bolt is a 3-series, (designed for 3. it is a full floating axle, with the massive 10 1/2" ring gear. General Motors 12 bolt axle specs and tech - the GM 12 bolt differential is a semi floating rear axle that was used in 1/2 ton and 3/4 ton GMC and Chevrolet pickup trucks from 1964 until 1982. 12 BOLT POSI REAR SALE for sale in Douglassville, Pennsylvania 12 BOLT GM # 3894939 AXLE CODE KJ 0220B COMPLETE W / DRUMS $1300. Early Ford Beam Axle Identification and Dimensions; How To Box-In a Differential / Solid Axle Rear-End Housing; How To Decode Ford Part Numbers; How To Install a Limited Slip/Posi Unit in a GM 10 Bolt 8. Items may be different than pictured. Dana axle identification is located on axle tube between Steering Shock Absorber Bracket and the Carrier. Now offering Hawks Custom 82-2002 Direct Bolt In 8. March - April 2003 Lane Racing And Rodding Article By Jim Kaekel, Jr. Do you know if it's a 12 bolt or 10 cover. Our services also include 12 bolt rear-end restoration and rebuilding. 12 BOLT rearend ID. Add a center section,and what ever brakes you want including discs. then superior Yukon Gear and Axle products offered at CARiD are the right choice. 2-inch ring gear diameter and 28-spline axles for Camaros, Chevelles, Impalas and even the early Chevy II's. 12 BOLT POSI REAR SALE for sale in Douglassville, Pennsylvania 12 BOLT GM # 3894939 AXLE CODE KJ 0220B COMPLETE W / DRUMS $1300. GM 12-bolt Similar to the GM 10-bolt. Check out the deal on Yukon 38 Spline Axle Upgrade 03-12 Dodge Ram 2500 / 3500 AAM 11. 12 bolt Chevy rear end Chevy 12 bolt rear differential $200 will remove after purchase while you wait will help load bring pickup or trailer $200 C10 Chevrolet nova Camaro 454 427 327 350 gasser 57 Chevy bel air. 12 Bolt Built to Order Housing & Axle Package 12 Bolt Built to Order Housing & Axle Packages. When it comes to GM muscle cars and sports cars, the 12-bolt axle has been the top high-performance axle assembly for decades. 12-Bolt Custom Rearends Housings Axles Brakes Bracketry Ring & Pinion Sets Carriers Bearing Kit / Hardware Diff Covers Yokes Options Oil & Additives Labor Services 8-Inch Ford Custom Rearends 2WD Beam Frontend. FREE Shipping by Amazon. GM 10 & 12 bolts are usually on the web on the front on the center section-left side as shown. This is for the 5 on 4-3/4" bolt circle (new style flange). Sounds like a gear has something getting stuck in it. A new and more complete look at converting a 14-Bolt to disc brakes, including weld-on and bolt-on brackets, a larger calliper option, and a detailed look at wheel stud and wheel nut options. 12 bolt shafts fit other 12-bolts, and 10 bolt shafts fit other 10-bolts. BTW some later 80's earlier 90's S-10's came with 8. Currie 12-bolt rearend with direct bolt-in fit for r 1964 thru 1972 Chevelle, El Camino, Skylark, GTO, 442 and other GM A-body vehicles. They only make the gears in 3. Add a set of our alloy axles & one of our drum or disc brake kits, and you have the makings of a slick hybrid rear end. Its a GM 12 bolt, number cast into the housing on the front passenger side is NF3896838. Chevy rearends will have a casting date on the rearend at the bottom of the rear center section in a recessed area. 1947-1955 Chevy GMC Truck Parts. This is a complete set that includes axle bearings and seals. Before we start, let's identify the parts. The standard 10 bolt cover is typical on these units. 5" GM Chevy 10-Bolt Mini Spool - 30 Spline Axle - Rearend. 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. Ring Gear Diameter: 8. Description. 50” drop for12-bolt). , an independent reseller of General Motors automotive parts and accessories. 5 for sale in Richfield, Ohio $1,295 Share it or review it. Included are the shims required to index (center) the caliper properly over the rotor. The Moser Engineering GM 12 Bolt: The strongest 12 bolt rear end for the 1964-1972 GM A-Body Chevelle, Malibu, GTO, etc. I can help with a 'bolt in lump port kit' or a 'performance intake lump port head' work for your inline Chevy 194, 230, 250, 292 and 153,181, 2. 150: 9133 : Olds/Pont Ball Bearing: 1. 2 Pontiac 10-bolt has 2 scallops (cutouts) on each side of the rear cover, whereas an 8. RANDYS carries GM differentials from the small 6. Transmission. Then put it all on a pallet with the rear end running from corner to corner and put some lag bolts throuogh the bottom of the pallet into the blocks of wood. 5" ring gear GM axle. I am looking to upgrade my 1969 camaro rear end. 12 Bolt Street Gears are designed to withstand the rigors of everyday driving, and a weekend at the track. 25 and Dana 60 rear ends, 12 bolts on the GM 12-bolt rear end and nine bolts on the GM 7. Axle Retainers. Dexter is a trusted brand serving the utility trailer, recreational vehicle, marine, agricultural, and specialty markets. In 1971, GM instituted a standardized "corporate" rear axle. And some stamped. So I assume the cover has 12 bolts on it? Cause the Casting Id Number seems to point to a 10 bolt rear??? 396927nf. 08 rear end center section is an original used two-pinion type with cast arma-steel housing. Instead of using a C-clip to hold the axle in the housing, these axle assemblies use bolt-in axles, much like an 8. 5" 14 bolt semi float 6 lug will have the right mounts but you will need new u bolts and figure out how to get the driveshaft to work. Master Overhaul Kit for GM 8. Better Axles and Bearings For the GM 12-Bolt. The spline should be 30 on an OEM model. In actuality, the term 12-bolt is due to the 12 bolts holding the ring gear to the differential. However, the smaller 10-bolt unfairly gained the reputation as a weak and inadequate rear end for high-performance applications. 90 & numerically higher gear) carrier? I know it has a Richmond 4. Gm Chevy 12 Bolt Truck Axle 3. Download these exploded view part diagrams and associated part lists to select an AAM series below that matches your GM vehicle. One is a car version with a grooved cover plate, while the truck-version cover plate is raised. A Chevy 3/4 ton pick-up may have a 14 bolt semi-float rear axle or a 14 bolt full-floating axle. GM and Eaton clutch type posi differentials are fully rebuildable with. pretty sure the 3896839 code is the GM diff. It has numbers on the case:GM15,3856525 with a N above it and the Vin# is C154 - 6Z137529. The guy that I got it from claims that it is a 1965 12 bolt rear axle assembly with new 3:08 gears. post #6 12 bolt rear end identification. it uses c-clips to hold the axles hafts in. They feature a massive 10. Early Ford Beam Axle Identification and Dimensions; How To Box-In a Differential / Solid Axle Rear-End Housing; How To Decode Ford Part Numbers; How To Install a Limited Slip/Posi Unit in a GM 10 Bolt 8. My understanding is that the last year chevy put a 12 bolt rear end in a c10 was 1981 is this true ? How can I find out what year the housing is. 1981-87 GM 10-bolt front and rear solid axles used 28-spline shafts and need an 8. This means parts are not interchangeable, which can come back to bite you later if you buy the wrong assembly. 1541H GM 12 Bolt Car - 64-67 Chevelle/67-69 Camaro Rear Shaft YA G12398538, gm12, gm 12, 12 bolt, 12 bolt car, car, gm, chevy, camaro, chevelle, ax, ax:, AX:G12398538 Description: *Fits 1964-1967 Chevelle and 1967-1969 Camaro with 12 bolt differential *30 spline *29 9/16" long. 6L 4 Spd FWD CA / P1 Integra 1990 L4 1. Shop by category. 150: 9134: Olds/Pont Ball Bearing. 250” below the center of the ring gear; compared to a 1. 2 BOP rearend. VIN:1GCUYGED0KZ415445. Stamped on the front top of the passenger side axle tube is THB W166 1 E. New, Used and. Although the 9" Ford rear end has become the rear axle of choice for drag and circle track racing the 12-bolt Chevrolet still enjoys a fair degree of popularity among drag racers and street stock racers from the GM contingent who still wish to run a corporate rear end. 5", common under 3/4 and 1 ton trucks from Chevrolet and GMC. the GM9 is probably some kind of corp casting stamp IDDon't think it matters much as far as you are concerned. 2 carrier and ring and pinion. If I do that, my anti-spin carrier will be for sale. In this article we’re going to highlight some of the best aftermarket products available to improve the strength of the 11. It can be argued that all A-body 8-3/4 axles are small bolt-pattern, as the A-body 8-3/4 was built until '72 or so. 2" ring gear from 1964 to 1972. The 10-bolt was used in all the low performance applications. rear axle and prop shaft illustration page axle identification overleaf self—adjusting front brake 1 2- 4 rear axle details positraction 5 rear suspension 6- 8 self-adjusting rear brake 9 disc brake systems 10-12 axle identification 13-16 wheel discs 17-20. D242 1234567890 CON2 No other tags or ID marks on this thing. Stock steering components are inadequate for truck s with raised suspension. On some tags, the first 2 digits don’t appear on the tag, but they must be used to identify the axle. My rear had been sitting so long, the gears were rusty. This assembly used an 8. The Chevrolet K5 Blazer is a full-size sport-utility vehicle that was built by General Motors. The best oil we have ever tested is Royal Purple. Enter your search keyword. GM and Eaton clutch type posi differentials are fully rebuildable with. New, Used and. Chevrolet 8. 5 for sale in Richfield, Ohio $1,295 Share it or review it. I have a GM 12 bolt rear axle. 200-400HP max 8-3/4" has no rear cover. 5" rear end parts for 1-ton trucks. We cater to all segments of the trailer industry, including: horse, cargo, race car, marine, toy hauler, RV Axles and Utility. A Chevy 3/4 ton pick-up may have a 14 bolt semi-float rear axle or a 14 bolt full-floating axle. Get the best deals on Rear Differentials & Parts for 12 when you shop the largest online selection at eBay. i have a 65 3/4 ton, 93 1/2 ton and a 86 k5 now. I know american classic has the decoder but can these numbers tell me the ratio of the rearend without removing the cover?. The rugged, reliable, and efficient Chevy 12-bolt has established itself as the preeminent rear differential for GM muscle cars since its debut in 1965. Oil pump bolt 12-15 ft. Bearings sold separately. Instead of using a C-clip to hold the axle in the housing, these axle assemblies use bolt-in axles, much like an 8. 5" long end to end. Cast iron and aluminum drive ends with the 2-bolt staggered pattern use holes A & C; Cast iron drive ends with the 3-bolt pattern use holes A, C, & D. A more affordable option than a linked rig, leaf springs are simple, strong, somewhat tunable, and they just plain work. No Aftermarket gears are available at this time for your 12 bolt FULL SIZE olds. 1978 chevy k-5 blazer,350/350/203 3. Sounds like a gear has something getting stuck in it. 5" ring gear was used in Chevelles. The drive gear has 16 internal splines and a diameter of 1. Measuring two different 10-bolt rear ends, I found the following:. 875-inch 12-bolt Positraction was the most widely used in 1965-'72 Chevrolet passenger car applications. 2 carrier and ring and pinion. Originally coded for 3. In 1971, GM instituted a standardized "corporate" rear axle. Terms & Conditions. Richmond Gear is the leading manufacturer of professional quality, high performance ring and pinion sets. All Moser 12 Bolt Housings are designed and manufactured in the U. Gm 12 Bolt Rear End Identification. All Axle Shafts are constructed of high-quality steel for long-lasting durability. So I assume the cover has 12 bolts on it? Cause the Casting Id Number seems to point to a 10 bolt rear??? 396927nf. description replaces across flats thread size thickness o. We offer a variety of Gm 12 Bolt Truck for your automotive needs. If it is a GM axle made by Eaton like referenced above then it would be an HO52/HO72. Plan Axles Custom Axles Cases & Spider Gears Dropouts & Pinion Supports Kits Spin Free Kit Positractions & Lockers Ring & Pinions Spindles Spools Tools Yokes Yukon e-Catalog Product Comparison Charts. Rear Axle Codes. ChevelleStuff. Before we start, let's identify the parts. Chevy, Ford, and Mopar rear axle widths. then superior Yukon Gear and Axle products offered at CARiD are the right choice. Axle Identification Chart DANA 25/27 These Danas are indistinguishable in appearance. It turns up in countless Camaros, Chevelles, Novas and full size Chevys. 5" 14 bolt in many Chevrolet Silverado and GMC Sierra trucks beginning in the 2001 model year. Armed with a little more information, selecting your next axle upgrade will be a much easier task regardless of whether you are just rebuilding a stock rear end or you have aspirations of being the next 1320 hero. 5" 10 bolt rear end identification vs 8. Sierra Gear & Axle has a complete inventory of Ring & Pinion Gear Sets for use with GM axles. New Cajun Red Tintcoat 2018 Chevrolet Malibu in-stock and for sale at McGrath Chevyland in Cedar Rapids, IA. Brakes, Rear Axles & Wheels for classic Chevy muscle cars, including restoration and GM Performance parts for the Camaro, Chevelle, El Camino & more. Although it may not be as popular as a 9-inch Ford in drag race applications, the 12-bolt does have a number of plusses (not the least of which is decent strength when carefully prepped). CAChassisworks. For instance, the truck 12-bolt uses a smaller inner pinion-bearing (1. Depending on thte speed I go, it goes awaybut then slowly comes back. The control arm-mounting ears on top of this 7. This rear end was available in a 10 bolt version only. GM 10 or 12 Bolt Rear End Axle Bearing and Seal Set, 2 Bearings and 2 Seals PART NUMBER: SUS-328 Our Price: $39. Some pictures to help. A Chevy 3/4 ton pick-up may have a 14 bolt semi-float rear axle or a 14 bolt full-floating axle. Please note that the car and truck 12 bolt pinion yokes are the same. If I do that, my anti-spin carrier will be for sale. If you choose this axle, you'll want to convert either the front (a Wagoneer 44 would do it) or the rear to make the wheel bolt pattern the same. 1967 - 1969 F-Body Torque Arm Suspension Kits TAS001 - Torque Arm Suspension Kit, GM 12-bolt Differential - Add a modern suspension system, improve handling, and reduce wheelhop and axle wrap on your 1st Gen GM F-body with a Torque Arm Suspension conversion from BMR Suspension. ( torque thrust rims) also willing to trade for new edelbrock 600 cfm carburator and intake for small block chevy (that fits pre -1987 engines) may also trade for other 4 3/4 x 5 lug gm aftermarket wheels. Axle codes by year [] 10 bol[] 10 bolt ID tipIf you don't have the codes on hand to identify if a 10 bolt rear end is an 8. But, much of the information will be applicable to the original factory positraction units (originally made for GM by DANA). It is the stamped identification number on a 12 bolt rear housing for a Chevy/GMC vehicle that measures 60. Gm Chevy 12 Bolt Truck Axle 3. Axle housing is shipped with inner axle seal and seal housing. 2" 10-Bolt Chevy 64-72 parts and get Free Shipping on orders over $99 at Speedway Motors, the Racing and Rodding Specialists. We drop the axle the vintage way like they did years ago. Fits 1964-1967 Chevelle and 1967-1969 Camaro with 12 bolt differential. 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. I recall my 77 manual mentions all the GM axles, and says to consult the HD Truck manual for the 12. Chevy Forums FREE technical assistance for your restoration and repair. 08 rear end center section is an original used two-pinion type with cast arma-steel housing. 10Rear Suspension: SolidPinion Nut Size: 1-. ChevelleStuff. on the market! The newly cast nodular iron housing is a direct replacement 12 bolt rear end for the 1964-1972 GM A-Body Chevelle, Malibu, GTO, etc. Assembly Plants. Home Chevelle 1966 Differential & Rear-End Components Drivetrain. We use it in our racecars. The easy answer is a 9 inch Ford. Although not technically how it got its descriptive name, the easiest way to identify a 12-bolt rearend is obviously by the 12 bolts holding the rear cover in place. Originally coded for 3. GM 12 bolt carrier identification/ questions, * with pics * When I bought my 57 it came with a 12 bolt posi that I was told was out of a 67-69 camaro, which is the same width as the stock 57 rear, which I believe is 60. Rear Axle Measurements. Enter your search keyword. *Remanufactured parts meet GM approved service part requirements and are made from previously used components in a process that involves disassembly, inspection, cleaning, update of software and replacement of parts as appropriate, testing, and reassembly. Ford, Jeep, LS3, Chevy. 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. Its a GM 12 bolt, number cast into the housing on the front passenger side is NF3896838. Parts List. Both 10 and 12 bolt services are offered. Detailed, step-by-step instruction for setting up gears in a GM 10. hey people,new on here,great info,does anybody know how to id rear end on 1965 chev shortbox,been looking around but nothing for trucks that i have seen,only numbers i have are 3856525,and stamped on axle housing is MHA?and also it is 12 bolt truck rear,pretty sure of that when doing research,8. 5 10 bolts so all ya gotta do is up grade to a 2wd vesion an boom ya got a rear end that is about as strong as a 12 bolt after a lock right, moser axles, "c" clip eliminators, summit pre load cover, and mobil 1 gear oil. the GM9 is probably some kind of corp casting stamp IDDon't think it matters much as far as you are concerned. 875" CAR & TRUCK PINION YOKE 1350 NEW WITH HARDWARE KIT #36711. 31 but now has a 3. If it is a GM axle made by Eaton like referenced above then it would be an HO52/HO72. Ford 9 Inch Rear End; Fabricated 9 inch Housing; 9 Inch Pro Mod Rear End; 9 Inch Dragster Rear End; 9 Inch Modular Housing; Dana 60 rear axle; 9. Our applications include Leaf Springs, Control Arms, Sway Bars, Shock Absorbers, Dampers, U-Bolts and Track Bars for all Jeep® models. Home Chevelle 1966 Differential & Rear-End Components Drivetrain. We offer the most complete line of rear end parts for the GM 8. Dana design axles from 1977 thru 1980. weakest 8-1/4" has 10 bolts, evenly spaced. 65 66 67 Camaro Corvette Chevelle Nova NOS 12 Bolt Rear End Fill Plug With Positraction Tag GM# 3866433 (NOS-1208) NOS Rear end fill plug with Posi tag. Assembly Plants. The proper setup using quality hi-performance parts is the only way to ensure that the time you spend setting up your vehicle is not wasted. No Aftermarket gears are available at this time for your 12 bolt FULL SIZE olds. GM 10 & 12 bolts are usually on the web on the front on the center section-left side as shown. I have a GM 12 bolt rear axle. GM 12-Bolt Two versions of the GM 12-bolt exist but have nothing more than the bolt count in common. Hello, I need some help to ID a 10 Bolt GM Rear end, that has code DN (Delta Nancy) on the Axle Housing left tube upper, On the right side of the axle housing tube, has the number - 3142, and then another number that is 8780100. If you are searching for reliable ring and pinion sets, axles, lockers, etc. Find great deals on eBay for 12 bolt chevy posi rear end and chevelle 12 bolt posi. Showcasing ford rear end axle available for purchase today! Vintage Car Restoration. I bought it in pieces and know it is a 3. 5" or not, you can measure the distance between the very bottom bolt for the cover and the next adjacent bolt (either right of left), it will be 3-3/4" for a 8. Our Ring and Pinion sets are reasonably priced and are the highest quality aftermarket gear sets available. It has a film strength second to none. The complete kit includes a 2,200 lb axle tube, (2) 1,110 lb weld-in spindles with hardware, and (2) weld-on spring seats. I was browsing around and found a used GM 12 bolt rear end from get this, a 1969 Cutlass. , 1/4' wall), custom alloy axles (30, 33, or 35 spline. This rear end was available in a 10 bolt version only. 5" diameter ring gear and pinion with a 3rd bearing at its nose that prevents gear deflection under severe loads. This yoke is made from 1440 steel. If you know how to ID this it will help me thanks. CHEVROLET 12-BOLT 1/2-TON TRUCK Bearing Set This bearing, race and seal set is the finest money can buy. Dates and casting # seem to fit right into your axle assembly date stamp. This number is stamped on the forward facing passenger side axle tube. So I assume the cover has 12 bolts on it? Cause the Casting Id Number seems to point to a 10 bolt rear??? 396927nf. It has numbers on the case:GM15,3856525 with a N above it and the Vin# is C154 - 6Z137529. If your swapping a GM A body rear end into a G body this kit allows you to correct the instant center in the car.