Gm 12 Bolt Rear End Identification

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. Locate 10 Bolt Chevy Rear on sale below with the largest choice of 10 Bolt Chevy Rear anywhere online. Dana design axles from 1977 thru 1980. It does mention Dana axles up front, but not in the rear. Al The truck posi can go into a passenger 12 bolt, the drive spider gears (in some) have to be changed for the axle spine, or the axles need to be changed, most trucks had the 33 spline, 31 spline can be found. GM 10 & 12 bolts are usually on the web on the front on the center section-left side as shown. 62" 64-77 Chevelle, 73-76 Torino. The rear end is a GM 12 bolt. We make it easy to verify your. Learn more about, identify, and order a pair of Buick, Olds, Pontiac stock replacement press on bearing bolt in axle shafts from Dutchman Motorsports Inc. Just Differentials, Justdifferentials. also bought new 3. This is a complete set that includes axle bearings and seals. Help needed with identifying rear end #456678 Sun Sep 28 2008 08:38 PM: GM, 12 Bolt Diff cap, 6 Lug Wheels, Diff casting 3896839, Brake pads are about 2 3/4 wide. If you are searching for reliable ring and pinion sets, axles, lockers, etc. For all models with Positraction. GM RPO Axle Code Notes. Chevy 12 Bolt Truck Rear End Girdle fits all Chevrolet and GMC Trucks with 12 bolt rear ends. When looking at a 12-bolt rearend, it is important to know that 12-bolt axle assemblies use different components for cars and trucks. We disasembed it and it was jet cleaned. The table below will help you determine what rear end ratio you have by using your RPO code, answering the question: What rear end ratio was in my Chevrolet or GMC vehicle when it left the factory. 1970 Chevelle 12 Bolt Rear End Axle Ckk 10 9 L78 410. Many of these differentials are now more than 40 years old and are due for an overhaul. For instance, the truck 12-bolt uses a smaller inner pinion-bearing (1. Do you know if it's a 12 bolt or 10 cover. Jeff Smith: When Chevrolet built the first Camaros in 1967, they were already in production of both 10- and 12-bolt rear-end housings. Home Rear Ends. Although Timken does have very few made in other places. The 10-bolt differential fits all pass. When it comes to GM muscle cars and sports cars, the 12-bolt axle has been the top high-performance axle assembly for decades. I'm just curious how the numbers decode. 00 Choose Options Chevy 12 Bolt Truck Powergrip 30 Spline Posi LSD 3-Series New Clutch type posi differential provides aggressive yet smooth traction, perfect for street and performance applications. please call to place a order. Find C-Clip Eliminator Kits and get Free Shipping on Orders Over $99 at Summit Racing! Stock Style Axle,1. Eaton 12-Bolt Car Posi Unit JEGS Differential Installation Kit Lucas Heavy Duty Gear Oil (2 Quarts) Richmond Gear GM 12-Bolt Ring & Pinion Set Note: Please read the more details section as some differentials require special bearings which are not included. Mostly truck housings but there are exceptions to. 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. GM 12-Bolt Two versions of the GM 12-bolt exist but have nothing more than the bolt count in common. From buying research to owner support, join 1. GM Positraction rearends have been around since 1957, in several different ring-gear diameters, but the 8. 08: 40/13: WE: YE: 1965: GTO: 3. 12 bolt rear end 66 chevy tk - $150 (Tenino) < image 1 of 2 > 5200 offut lake rd se post id: 7008647722. This has aftermarket 4. Ring Gear Diameter: 8. This article will be specifically directed at converting the 55-64 Chevrolet full size pass car and 56-62 Corvette NON-positraction rear end to positraction using an Eaton aftermarket posi unit. Better Axles and Bearings For the GM 12-Bolt. This number is stamped on the forward facing passenger side axle tube. I'm just curious how the numbers decode. 1964-66 Chevy Chevelle Currie 9-plus Ford 9 Rear End Axle Housing Gma6466x. FIREBIRD REAR AXLE PARTS. Seems you have a truck rear end in your car. please call to place a order. Pretty sure it's a GM truck 12 bolt. 875-inch ring-gear carrier held in place with two internal main caps. 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. In 1979, GM redesigned their Np203 lever assembly, they did away. You would probably need to put an aftermarket posi and billet yoke. Eaton Posi limited slip differentials feature chatter free carbon disc clutch packs and precision forged gears for maximum performance and durability. ive always thought that on the driver side on the diff housing where the axle tube connects to the housing theres a code like gm 75,i always thought that meant that the rear end was built in the year of the number stamped after "gm" well i called in the 3 number code on the top of my axle tube from the passenger side which is KDU and they told me that the rear axle was produced from '74 to '77. Some people trash talk the GM 10-bolt as a junk rear end, and if they are talking about the 8. We also like Mobil One 75-90 gear lube because it reduces differential oil temperatures compared to the GM lube. There are total width end to end issues (as the 8. Richmond Gear is the leading manufacturer of professional quality, high performance ring and pinion sets. ('55-'56 Pontiac rear end will also bolt in, but is different design than stronger '57-'64 units). We make it easy to verify your. 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. Bearings sold separately. 1999 Expedition Engine Motor 4. Rebuilt 14 Bolt Corp Rear Axle Gear Ratio changes from 373 to 456. Includes detailed part numbers. Axle Flange Housing Identification Chevrolet, Ford, Oldsmobile, Pontiac — they all use different axle flanges. Eaton 12-Bolt Car Posi Unit JEGS Differential Installation Kit Lucas Heavy Duty Gear Oil (2 Quarts) Richmond Gear GM 12-Bolt Ring & Pinion Set Note: Please read the more details section as some differentials require special bearings which are not included. After I found that out, just decided to go ahead and purchase a 12 bolt housing. * These ratios were offered with the optional 12 bolt rear end(455 only) A sticker with the code was applied to the left brake drum. The 9-inch Ford outperforms the GM 12-bolt rearend by a wide. 5" ring gear GM axle. The control arm-mounting ears on top of this 7. Note 2: Block components, such as main bearings are the same as the Chevy 216. The Driveshaft Bible. Terms & Conditions. SUPER NOVA 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. 12 Bolt Passenger | GM 8. There are several reasons for this. The 70 2wd and 70-81 4wd have a 6 lug 12 bolt that is a couple inches wider, but will fit under a Task Force truck as long as you don't get too wild with wheel/tire width. 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. May fit 68-72 GM A body cars. Complete GM "A" Body Rear End Complete GM 12 Bolt Rear End for 1964-72 GM "A" Body cars. Later '59-up years are wider (unsure about '58). the 10 bolt on the 65 gto is plenty powerful for the street. Plenty of Chevy inline 4 and 6 performance parts in stock and ready to go. While the 7. The tried-and-true clutch pack design works great for daily driving, rally racing, mild off-roading, drag racing, and circuit racing. 5" rear end strength for an S10 The weak points of the 8. This rear end was available in a 10 bolt version only. It does mention Dana axles up front, but not in the rear. enter your search here. 55 No12 boltDana DL. No calls after 8 p. Ring Gear Contact Pattern Interpretation of Face Hobbed (uniform tooth depth) Gear Teeth Proper ring gear to pinion gear contact pattern is critical for quiet and trouble free gear set operation. it is a full floating axle, with the massive 10 1/2" ring gear. 31 No12 bolt, policeDana DF 3. Read about the vehicle specs & visit our Urbandale dealership for a test drive! 54DCDW1B1JS811375. The posi manufacturer codes are D for Dana, E for Eaton, and W for Warner. These RPO codes are used to idicate a specific type of differential and/or ring gear size. GM 12 Bolt Truck - GM 12 Bolt Truck Quality & Customer Service Distributor Support Warranty Info About Yukon Calculators Product Sheets Y. This reduces the load on the pinion, resulting in less parasitic loss from the friction and load. Although Timken does have very few made in other places. This package will come with New stock brake shoes, hardwear and drums. Many custom made axle housings for the GM boys utilize the 9 inch Ford, even though they hate to admit it. Visit our Frisco dealership, Stonebriar Chevrolet. Rear spring mounting pads differed in that 1964-66 rear ends used a flat pad with a hole drilled in the center while 1968-72 rear ends have circular spring mounting pads, which are 3/4" higher. GM flipped a coin on a lot of things it seems. Example: BL 1122 G2 For a 68 or 69 model, this is interpreted as a 3. Sierra Gear & Axle has a complete inventory of Ring & Pinion Gear Sets for use with GM axles. The pinion gearshaft. 31 No12 bolt, policeDana DF 3. 10 bolt truck rear ends were not available until the late 70s - 80s. Page 3- BOLT ON, No machining rear discs!!! Bronco Tech. Plan Axles Custom Axles Cases & Spider Gears Dropouts & Pinion Supports Kits Spin Free Kit Positractions & Lockers Ring & Pinions Spindles Spools Tools. 1978 chevy k-5 blazer,350/350/203 3. It doesn't have the aftermarket parts availability that a 9" has either. 5" and 3-1/4" for a 7. New, Used and OEM Automotive Parts - Large Inventory - Great Prices Chevy 10 12 Bolt Rear End Disc Brake Kit Chevelle El. Boost Brothers Recommended for you. I always appreciate and help the customers can offer in the casting numbers and tech GM books out there that are obsolete. Re: 12 bolt rear end identification Depends on just what rear it is. 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. It looked OK, but we wanted to check out the the clutches before we stab this posi into our 12 bolt differential that is destined for our project 65 Impala SS. Detailed, step-by-step instruction for setting up gears in a GM 10. Some people will trash talk the GM 10-bolt as a “junk” rearend, and if they are talking about the 8. 75 (8 3/4) rear end LOADS FROM THE FRONT and IS THE ONLY REAR END THAT DOESN'T HAVE A REAR COVER. For more information about the different brands of Ring & Pinion gears listed above, please consult our Ring & Pinion page. 675 inches). 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 manufacturing location. Should be marks on the housing, I'd rather just turn and count. GM 12 Bolt Truck. The GM 12-bolt rear axle assembly receives its name due to having 12 bolts on the rear cover of the housing. 42 POSI REAR END 30 SPLINE 12 BOLT STRENGTH 8. 14-Bolt Gear Setup. 07 Yes12 boltDana DG 3. Casting # XXXXX and NF3896839 on center housing. All for $1200 1969 Impala 12 bolt posi rear end $800. The 10 bolt Chevelle rear end has the 8. 12 Bolt Built to Order Housing & Axle Package 12 Bolt Built to Order Housing & Axle Packages. ('55-'56 Pontiac rear end will also bolt in, but is different design than stronger '57-'64 units). Part #C12T-BS Price $ 130. Auburn Gear's High Performance and Pro-Series Limited Slip Differentials are the staple of the performance industry dating back to the mid 1950s. Bearings, shims, rebuilt parts. DPK-01 Differential Pinion Shaft Lock Bolt Extractor Kit Includes 1 Year Warranty For Broken Differential Pinion Shaft Lock Bolts In most GM and Ford Integral (WER type) Differentials Essential for most GM and Ford Mechanics and Weekend Mechanics The remo. 0 mercury engines. if it's non posi, jack up one wheel, turn it exactly twice and count driveshaft revs. All Moser 12 Bolt Housings are designed and manufactured in the U. If you install a 12 bolt rear axle, you will need Neapco #3-3130 rear u-joint since the Chevrolet yoke is different from the Buick, Olds, Pontiac axles. Was in 68 Chevelle Also fits Malibu el Camino and all A body GM cars from 1968-72. it looks like 12 Bolt 8. Filthy Motorsports carries a wide range of parts, gears, and upgrades for the GM 8. JEGS Easy Kits are designed by JEGS Professionals to assist your shopping experience. 5", common under 3/4 and 1 ton trucks from Chevrolet and GMC. the smaller 14 bolt, with it's 9 1/2" ring gear, is a semi-floating design. E-brake cables sold separately. We have had installations on 2014 to 2018 trucks. pretty sure the 3896839 code is the GM diff. Example: BL 1122 G2 For a 68 or 69 model, this is interpreted as a 3. Small bolt-pattern hubs measure 4" between alternate wheel studs as opposed to 4. It has the engraved TA checkered flag logo, and the load bolt lock nuts are recessed into the brace. How to Identify Your Differential & Axle Type 12:13. 875in Ring Gear Chrome. Please select a rear end that matches your vehicle below. Pretty sure it's a GM truck 12 bolt. my nova's rearend. Ring Gear Diameter: 8. Look next to the rear end cover bolts at 5 and 7 o'clock. The smaller 10 bolt became into what you need to get in case you ordered a six cylinder or small low perf. 5 MILLION GM Truck Enthusiasts every month who use GM-Trucks. 55 rear end center section is an original used two-pinion type with cast arma-steel housing. New housing with 30 spline Bolt-In axles. I've shipped them all over the world. Download these exploded view part diagrams and associated part lists to select an AAM series below that matches your GM vehicle. 12-Bolt Identification. WE REBUILD TO YOUR SPEC'S. diff size or get the # off the in side gears. using Moser Engineering owned Casting Boxes. 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. DTS has gathered "the best of the best" products from major manufacturers under one roof and supported them with a staff of experienced, technically competent people. Contact us today to schedule a test drive. 12-bolt Chevy, 2. 14 Bolt Axles: The Differences Between SRW, DRW, and C&C The GM 14 bolt is found in 3/4 and 1 ton Chevy and GM vehicles. 5 rear end for sale at an affordable price tag. This means parts are not interchangeable, which can come back to bite you later if you buy the wrong assembly. 5 MILLION GM Truck Enthusiasts every month who use GM-Trucks. Jeep Accessories, Jeep Parts -JeepHut Offroad is your destination for Jeep parts, Jeep accessories, Jeep repair and Jeep customization for all of your Jeep, truck four wheel drive and offroad needs. 73s headers true duals,holley 770 eddy intake and carb spacer~ resto-mod in progress 1975 chevy k10 DOWN FOR RESTORATION! 540-700r4-203/205 and lots more to come in just a few monthes!! 2000 chevy silverado z-71,5. GM 10 bolt front axle vs dana 44 vs dana 60 How to tell what you got 1973-1987 GM Trucks. Community Message Forum Photo Gallery Event Calendar Book Reviews Bronco Wallpaper. Code ID 12-bolt axles can be identified by casting numbers on the bottom of the cast-iron center-section and on the front of the passenger side axle tube. 10 bolt truck rear ends were not available until the late 70s - 80s. New Dynapro Low-Profile Pro-Series disk brakes with the Chevy 5 on 43/4 bolt pattern. If you install a 12 bolt rear axle, you will need Neapco #3-3130 rear u-joint since the Chevrolet yoke is different from the Buick, Olds, Pontiac axles. The standard 10 bolt cover is typical on these units. com, JT Parts, JT's Parts & Accessories is a leading distributor in differential and axle parts from Nitro Gear & Axle, Nitro Gears are available for all types of vehicles. For 6 lug rear ends, the 64-69 1/2 ton 2wd Chevy (and some GMC) trucks have a 12 bolt rear, about 60-61" wide (I measure them where the wheels bolt on). I have a GM 12 bolt rear axle. While talking with Stephen he told us that a corporate 10-bolt front end is basically the same strength as a Dana 44 and not too far behind a corporate 12 bolt axle. Rear Axle Codes. it looks like 12 Bolt 8. 31 Yes12 boltDana DI 3. Rear Axle - $600. See why this axle can easily support 44-inch tires in this. the axle shafts are held in with bolts. Kit Number: Buick : 68-70 : All Mid Size (except Skylark Canadian Model) 8. 0 out of 5 stars 1. 12-Bolt Built to Order Rear End Package Complete 12 Bolt Built to Order Rear End Packages. 56,GM12T,GM12, YG GM12T-456T Description: All Yukon Gears are computer-controlled forgings, forged out of 8620 steel, fully automated turning, single pass cut, and then vacuum heat treated, the sum of these processes is the ultimate. the 10 bolt on the 65 gto is plenty powerful for the street. Our Ring and Pinion sets are reasonably priced and are the highest quality aftermarket gear sets available. The phrase, "more like a 10-bolt", is usually talking about the size of the ring gear and/or strength of the carrier. The 1962-63 serial numbers are located on the front, right side of the differential carrier. Before we start, let's identify the parts. The pinion gearshaft. 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. Included In Base Price: New Heavy-duty 12-bolt Housing For A-body Vehicles; Timken Master Bearing Kit And Solid Pinion Spacer; Currie Performance 33-Spline Axles With Timken Bearings. The posi manufacturer codes are D for Dana, E for Eaton, and W for Warner. Like if you see 12 bolts on a Chevy rear (c-clip retained axles) it is a 12 bolt ring gear on the inside carrier. 55 Gears 5 Lug 4 on 4 1/2 Bolt pattern Ford Dodge Jeep Removed from a 1967 chevy c-10 But obvious not orig to that truck Looks like a jeep cherokee 8. 10 Ring & Pinion gearset in it now, but they make a 4. 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. 625" axle tube end to axle tube end. 90) AG -- 31-3200 Overdrive (4. The Blazer continued until 2005. 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. Some 1960s and 1970s GM cars are not equipped with the common Chevy 10- or 12-bolt axle assemblies. 55 Rear End Differential OEM USED-This 1955-1956-1957-1958-1959-1960-1961-1962-1963-1964 Chevrolet 3. We commonly work with the early Broncos, pre-73 GM's, and cut down full size axles. Jeep Accessories, Jeep Parts -JeepHut Offroad is your destination for Jeep parts, Jeep accessories, Jeep repair and Jeep customization for all of your Jeep, truck four wheel drive and offroad needs. Carrier-bearing adapters are included for Ford 9” and 8. 875″ Differential Parts The information above is an excerpt from our Differential Parts Catalog. In 1979, GM redesigned their Np203 lever assembly, they did away. Do you like Chevy Inline 6's? We can help you with all of the modifications needed. Common 70's GM rear ends 12 bolt Olds: 12 cover bolts,12 ring bolts, large round cover, 31 spline BIA's No gears available, steepest stock set 3. In 1970 the rear end was built in both 10 and 12 bolt versions. 12 bolt rear end chevelle. For 6 lug rear ends, the 64-69 1/2 ton 2wd Chevy (and some GMC) trucks have a 12 bolt rear, about 60-61" wide (I measure them where the wheels bolt on). Rearend Quick ID - An 8. yukon gear, gm, 12 bolt, ring, pinion, gm 12 bolt, gm 12 bolt gm 12 bolt, GM12T-456T-YG,456T,4. The axle tubes are pressed into the differential housing and then welded into position to form a one-piece axle housing. This rear end was available in a 10 bolt version only. 5" 10-Bolt parts and get Free Shipping on orders over $99 at Speedway Motors, the Racing and Rodding Specialists. 12 Bolt Passenger | GM 8. The spline should be 30 on an OEM model. Posi units, helical, mini/full spools. 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. 31 No12 boltDana DE 3. The most common GM unit for the 1982 to 1992 Camaro is the Saginaw style 10 bolt Chevy differential. The 10 bolt Chevelle rear end has the 8. This unit was removed from a running driving car but is being sold as is. 5 inch ring gear, 26 spline axle 1985 to 1989: 7. In actuality, the term 12-bolt is due to the 12 bolts holding the ring gear to the differential. 12-Bolt Identification. If you jack up the rear end and spin the wheels, you can figure out what rear end gears are in your housing. 31 but now has a 3. 2" ring gear from 1964 to 1972. 5″ Rear-end; How To Install Ring and Pinion Gears in a Ford 8. 5" ring gear was used in Chevelles. While talking with Stephen he told us that a corporate 10-bolt front end is basically the same strength as a Dana 44 and not too far behind a corporate 12 bolt axle. Differential Identification. This unit was removed from a running driving car but is being sold as is. Was in 68 Chevelle Also fits Malibu el Camino and all A body GM cars from 1968-72. It has a 12 bolt rear end in it. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. Item Details. To begin with it's a 1963 C10 swb, it has a 1968 250 inline six and a 1984-1986 T5 transmission. 875-inch ring-gear carrier held in place with two internal main caps. 0 items in cart Checkout. This weld-on kit allows the use of the original backing plate and brake drum. it uses c-clips to hold the axles hafts in. Dana Dana 30 - Standard, Reverse Rotation, CS & TJ Dana 30 - JK GM 8. With 95,000 miles on it, I got tired of the howl from the rear end (been there since I bought it at 60,000 miles, previous owners pulled a trailer that was probably too heavy for the truck). It has an E under that # It has 6 bolt axles, so it should be a truck of some sort. The easiest way to identify a 12-bolt rearend is obviously by the 12 bolts holding the rear cover onto the axle housing. Our Ring and Pinion sets are reasonably priced and are the highest quality aftermarket gear sets available. The TH700R4 is an automatic shift, four-speed overdrive, longitudinally positioned transmission. The 1962-63 serial numbers are located on the front, right side of the differential carrier. This is a complete set that includes axle bearings and seals. New housing with 30 spline Bolt-In axles. It does mention Dana axles up front, but not in the rear. One is a car version with a grooved cover plate, while the truck-version cover plate is raised. So if you have a workable ratio, stick with what you have or suffer the consequences. com helps narrow available axles by year, make, model and drive type. Detailed look at how to add disc brakes to the GM Corp 14 Bolt rear axle. 12-Bolt Casting #3917124 early model year, #3959038 has also been found with K88 cast date 10-Bolt Casting # 3917123 The casting numbers/letters on rear end housings may have either a prefix or suffix of "N" or "NF" and no reason has been found yet why they may have one or the other. Easy to use parts catalog. The crossbar houses the load bolts that apply pressure to the bearing caps. 2 10 bolt had their own round 10 bolt rear cover with a splash lip on it. You will notice shortened stopping distances, reduced fade and improved. The extra 10" allowed AMC to offer an automatic transmission for the first time in a CJ. 55 No12 boltDana DD 3. Rear Axle Stamped Steel Abs Tone Ring Fits 98-02 Lincoln And Town Car 935147. 5 10 bolt rear your 12 bolt is becoming rarer every year and is worth good money to the right person. The pinion shaft on passenger-car differentials is 1-5/8-inch in diameter and the cover is oval, measuring 10-15/16-inches wide by 10-5/8-inches tall. 5" diameter ring gear and pinion with a 3rd bearing at its nose that prevents gear deflection under severe loads. The 1970 12 bolt version will bolt into any second generation Camaro and quite often is done so in high power applications. 67-69 camaro 12 bolt rear end 30 spline axles included housing and axles or will build to order other applications available call for pricing and options. 25" FRONT AXLE / IFS / 4WD and AWDGM 7. 8 Rear-End; How to Narrow a Ford 8. 31 No12 boltDana DE 3. Kit includes: • Upper and Lower Shock Mounts • Axle seats • Rear Shock Crossmember • U-bolts. 12-Bolt Casting #3917124 early model year, #3959038 has also been found with K88 cast date 10-Bolt Casting # 3917123 The casting numbers/letters on rear end housings may have either a prefix or suffix of "N" or "NF" and no reason has been found yet why they may have one or the other. Chevy 12 Bolt Truck Rear End Girdle - Original Made from 356-T6 cast aluminum, these girdles incorporate a reinforced crossbar. Best thing to do is pop the rear cover. Master Overhaul Kit for GM 8. 2 days ago · 2010 CGM Camaro 2SS/RS LS3 - Heads milled. hi there, got real strange gm axle, it has 10 bolt cover but 12 bolt carrier. Since GM switched to the 8. The Chevy II's Nova changed little for 1965, the most exciting news was again under the hood as the Nova could now be factory optioned with a 327 in V8 with up to 300 hp, an increasingly popular option among performance seekers, considering the Nova was light in weight. 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. 10 bolt truck rear ends were not available until the late 70s - 80s. In other words, the guts of a Chevy rear end will not fit in an Olds rear end housing, and vice versa. 625" axle tube end to axle tube end. ive always thought that on the driver side on the diff housing where the axle tube connects to the housing theres a code like gm 75,i always thought that meant that the rear end was built in the year of the number stamped after "gm" well i called in the 3 number code on the top of my axle tube from the passenger side which is KDU and they told me that the rear axle was produced from '74 to '77. SUPER NOVA 3. 62" 64-77 Chevelle, 73-76 Torino. AAM 725 SeriesGM 7. An extra 10" was added behind the front seats to make the CJ-7 a 91" wheel base vehicle vs. One is a car version with a grooved cover plate, while the truck-version cover plate is raised. Used 2018 Cadillac XT5 Base 3. 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. Universal Narrowing Jig - Includes a selection of CNC-machined adapters that bolt in place of the factory carrier bearings to assure proper alignment of the jig shaft and threaded housing-end adapters. 0 items in cart Checkout. Differential Codes and Usage. Identify a rear end. We disasembed it and it was jet cleaned. 64-69 1/2 ton 2wd Chevy/ Some GMC 6 lug rear end 12 bolt Coil spring set up Possible gear ratio's 3. 1 times per revolution of the tires, you have 4. Bearings, shims, rebuilt parts. Vintage Chevy Car Rear End Parts Chevy Supply of Assonet has a great selection of vintage Chevy rear end parts for 1937-1972 Chevy cars in our classic Chevy parts yard and Chevy auto parts warehouse. Tech article all about driveshafts. Showcasing Gm 12 Bolt Rear Ends available for sale right now on the internet. On some tags, the first 2 digits don’t appear on the tag, but they must be used to identify the axle. the smaller 14 bolt, with it's 9 1/2" ring gear, is a semi-floating design. 5" rear end strength for an S10 The weak points of the 8. Unfairly, this axle has been the redheaded stepchild in the family of GM axles. Although Timken does have very few made in other places. com helps narrow available axles by year, make, model and drive type. Just Differentials, Justdifferentials. 14 Bolt Axle Identification Chart October 26, 2018 If you’re wondering which 14 bolt axle you have – full-float or semi-float, dual rear wheel or single rear wheel, slide-on drum or stud mounted drum – the chart below will help you figure it out. An extra 10" was added behind the front seats to make the CJ-7 a 91" wheel base vehicle vs. All of these axles take different parts so we need to properly identify the axle you have to get you the right part.