Stock steering components are inadequate for truck s with raised suspension. Fits: Most 1964-72 GM corporate axles. I need to regear the front axle from 2. 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. Get up to 70% off on retail prices! Free Shipping on orders over $50. 5" 10-bolt rear end on his '76 Chevrolet Laguna S3 with a GM 10 & 12 bolt bolt-on rear disc brake kit. A "true 12-bolt" has come to mean a Chevy c-clip 12-bolt rear. Take a look at our 12-bolt Chevy & '63-'80 Corvette spools, as well as other Strange Spool Bearing Sets available for sale here at Applied Racing Technology. Nice original GM used 12 bolt for your camaro. (Accurate identification. This is what's used when you have normal wear in the rear axle caused by the normal positioned bearing wearing on the standard track area. 25 wide brake shoes and that it was between a 1993 to1995 year model. pinion shaft, 30 spline axles. In order to fit properly with the stock axle, a wheel with 5" backspacing will give 4" to the outside of the rim from the mounting surface. 1 times per revolution of the tires, you have 4. 73:1 ratio is the additional "meat" available with the larger ring. GM Positraction rearends have been around since 1957, in several different ring-gear diameters, but the 8. 5 10 bolt rear your 12 bolt is becoming rarer every year and is worth good money to the right person. GM RPO Codes, or General Motors "Regular Production Option" codes contain lots of valuable information about your GM vehicle. 875 Chevy 12 Bolt Car Rear Cover Gasket $10. These axles did have metal axle tags similar to the 9-inch axles but they were slowly phased out as vehicle programs were updated. 8 Fords, and Dana 60 rears. Do you know if it's a 12 bolt or 10 cover. 90 & numerically higher gear) carrier? I know it has a Richmond 4. just like the 10 bolt, and 12 bolt gm rears. 2 inch Buick axles, Chevy 10-bolt 8. it uses c-clips to hold the axles hafts in. Didn't realize Dale was showing it on the back of the tube ,close to the center section. 55 No12 boltDana DD 3. Re: 12 bolt codes / casting numbers and rear axle ? help Look on the front of the passenger side axle tube for the code about half way between the center section and the brake backing plate. 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. Dana 44s vs. It is a GM 12 bolt, mounted on a ridiculous 7 leaf high arch spring pack. Sierra Gear & Axle is a premium line of light-duty differential parts. Early Ford Beam Axle Identification and Dimensions; How to Box-In a Differential / Solid Axle Rearend Housing; How To Decode Ford Part Numbers; How To Install a Limited Slip/Posi Unit in a GM 10 Bolt 8. There are our 10-bolt 8. 12-Bolt Built to Order Rear End Package Complete 12 Bolt Built to Order Rear End Packages. ) They have also been moved outboard one inch on both sides. The superior quality of these gear sets is the result of years of racing development, outstanding design, and state-of-the-art manufacturing methods. No announcement yet. GM 12 Bolt Truck- MASTER INSTALL KIT All of our bearing kits come with either Koyo or Timken bearings, which would be made in Japan or USA. GM 12 Bolt Truck. Plenty of Chevy inline 4 and 6 performance parts in stock and ready to go. Chevy Pickup Truck Decoding Casting Codes Cowl Information RPO & Dealer Options Production Numbers Car Clubs ChevyResource. You need to remove the drum brake cover and then remove the brackets that retain the brake shoes. 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. Enjoy free ground shipping on orders over $249, knowledgeable staff, and unmatched customer service. how to convert 67-72 chevy c10 to 5 lug then drilled my new 5 on 4 3/4" bolt pattern. It offsets the increase in ratio and associated loss of material. then superior Yukon Gear and Axle products offered at CARiD are the right choice. We can build you a chevelle 12 bolt ,any ratio ,blasted and painted , new gears, new bearings , new posi , new axles , backing plate to backing plate. 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. GM 12 bolt- stock specs: 8. Re: Changing rear end to posi Aug 28 2011, 11:55pm G80 is the RPO code for GM's factory locking rear differential, however, the G80 is a very general RPO code and was used in S10's, Full-sizes, F-bodies, and I believe the Canyon's use it as well. The carrier is the posi unit, or in an open rear just the carrier. Both of these are semi-floating axles. 2" Differential 1967, Rear Gear Redline Series Gear Oil by Yukon Gear & Axle®. I read somewhere that the new generation trucks, like my '09 1500, have a 14-bolt semi-floating rear axle, and the 2500 series has the full-floating 14-bolt identified by a removeable section at the front around the pinion. 875Cover Bolts: 12Ring Gear Bolts: 12Spline Count: 30Dropout: FalsePinion Support: FalseCarrier Breaks: 2. Casting # XXXXX and NF3896839 on center housing. The Bill of Materials, or B. 5" on B, C, E and later A-body cars. Originally designed for Oval track racing to eliminate axle and bearing failure. The upper control arms supplied with this kit are built at the correct angle to attach to the G. It is the stamped identification number on a 12 bolt rear housing for a Chevy/GMC vehicle that measures 60. 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. 2-inch, 10- and 12-bolt and Dana 60. 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. The control arm-mounting ears on top of this 7. 0 NEW RELEASE!97-02 Camaro/Firebird 5. Dana axle identification is located on axle tube between Steering Shock Absorber Bracket and the Carrier. Bearings sold separately. Since GM switched to the 8. Re: '65 12-Bolt Rear End Identification 05-25-05 09:23 AM - Post# 704181 In response to WhiteElephant WE, You can ID the rear by checking the code - typically located on top of the passenger side axle tube. (Accurate identification. 625" axle tube end to axle tube end. Bearing size: OD 65 mm or 2. BTW some later 80's earlier 90's S-10's came with 8. Chevy high performance "If you are building a cruiser and want to keep everything GM, the 12-bolt is more than capable of taking the abuse. It is a GM 12 bolt, mounted on a ridiculous 7 leaf high arch spring pack. 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. General Motors Co (GM: NYSE 12px 8 10 12 13 14 16 20 28 36 48 64 Default Default Helvetica Courier Garamond Palatino Times New 2 Types Of Risks That Punish American Axle's Share Price 16. 14 bolt, 15 inch wide is 10. In order to fit properly with the stock axle, a wheel with 5" backspacing will give 4" to the outside of the rim from the mounting surface. 10 & up 19555-010 Eaton Performance differentials are designed for very specific axle applications. Chassis Unlimited Heavy Duty Steel Fabricated GM Corporate 12 Bolt Rear Differential Cover. Keep your axle assembly in tip-top shape by swapping out your. 5" ring gear GM axle. 5 truck diff are the Gov-loc and the yoke. All Moser 12 Bolt Housings are designed and manufactured in the U. New Dynapro Low-Profile Pro-Series disk brakes with the Chevy 5 on 43/4 bolt pattern. yukon differenti al rear end master overhaul bearing kit dodge chrysler 8 3/4 741. Mike is offline Quick Reply. Just put some blocks of wood under the spring perches and run some lag bolts through the u bolt holes. The main difference between the truck and passenger was the pinion gear and pinion bearings. Axle OD should be pretty much 40mm dia. 675 inches). This can be important, as the axle-shaft lengths also differ between early and late and do not interchange. They only make the gears in 3. No need to crack open the diff 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. It does mention Dana axles up front, but not in the rear. There are several reasons for this. 1955-1964 Chevy 3. Im not saying that its not possable to make a chevy 12 bolt stronger than a stock ford 9 in or that the chevy 12 bolt is a bad rear axle but for streingth ya just cant beat the ford 9 in. If the driveshaft spins ~4. The 1962-63 serial numbers are located on the front, right side of the differential carrier. All 62-63 Chevy II Novas used the 4 lug, drop-out carrier style rearend. Axle Identification Chart DANA 25/27 These Danas are indistinguishable in appearance. Our covers are made of 356-T6 aluminum and designed to improve ring and pinion gear life, as well as improve the appearance of your vehicle. GM Differential Identification & Specs. The illustration below will help identify the axle in your Jeep. The main difference between the truck and passenger was the pinion gear and pinion bearings. GM 12 Bolt Truck $320. Zinc plated steel. Be aware that for each model and year there may be more than one rear axle possible. You would probably need to put an aftermarket posi and billet yoke. 3 1/2 times, 3. The most popular rear end around is no doubt the Ford 9 inch unit, it is used by restorers, street rodders and racers alike, regardless of what brand of car the axle is going in. This unit was removed from a running driving car but is being sold as is. It is the stamped identification number on a 12 bolt rear housing for a Chevy/GMC vehicle that measures 60. The problem lies with the difference in control arm mount angles. Add some visual attitude to your rear axle with these chrome differential covers. It can be identified by its straight axle tubes, 10 bolt asymmetrical cover, and a "70" cast in to the housing and is visually similar to the Dana 60. 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. 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. AAM 725 SeriesGM 7. pinion shaft, 30 spline axles. If you are searching for reliable ring and pinion sets, axles, lockers, etc. Download Free Mp4 GM 14 Bolt Axle Rebuild Part 2 TvShows4Mobile, Download Mp4 GM 14 Bolt Axle Rebuild Part 2 Wapbaze,Download GM 14 Bolt Axle Rebuild Part 2 Wapbase. In 1970 the rear end was built in both 10 and 12 bolt versions. See pricing, features, and more here. Boyce Equipment & Parts Co. One important distinction is that the 71-81 Camaro axle is what's called an 8. They're stamped from heavy-gauge steel to ward off those pesky oil leaks, and chrome plated for long lasting good looks. 1955-1964 Chevy 3. Available 4-Link suspension systems Solid Axle Conversion, Convert your Chevy IFS to a Straight axle. Rear Axle Codes. 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. If you are rebuilding or just replacing a worn out part, then this axle shaft is just what you need to keep your vehicle moving. It is a 10 bolt posi rear, 56" flange to flange, and has parrallel ribs in the center section. No need to crack open the diff cover. 73 to match whats in the rear axle. The problem lies with the difference in control arm mount angles. GM differentials come in a wide range of sizes. 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. Add some visual attitude to your rear axle with these chrome differential covers. com Your online Classic Chevrolet information resource. 2 rear axles. But, much of the information will be applicable to the original factory positraction units (originally made for GM by DANA). 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. 625-inch unit and has a 27-spline shaft. Now in case you ordered an excellent block or extreme time-honored performance small block you need to get a 12 bolt. 2-inch ring gear diameter and 28-spline axles for Camaros, Chevelles, Impalas and even the early Chevy II's. 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. 08: 40/13: WE: YE: 1965: GTO: 3. TRUCK BED ' S / box and DOORS RUST FREE FOR FORD , GM , DODGE trucks - $2050 (Littlestown, PA) < image 1 of 15 > Keystone near Lumber condition: excellent. 10 Bolt Axle 5. New 2019 Chevrolet Bolt EV Premier 5D Wagon for sale - only $35,659. Moser 12-bolt rear ends are a perfect choice for your classic 73-87 C10 truck or muscle car. The differential case is a one-piece design. Complete Axle Assemblies. 5″ Rear-end; How To Install Ring and Pinion Gears in a Ford 8. Complete GM "A" Body Rear End Complete GM 12 Bolt Rear End for 1964-72 GM "A" Body cars. 55 No12 boltDana DL. Woody's Hot Rodz has a complete selection of 1955-57 Chevy Rear Ends. Example: BL 1122 G2 For a 68 or 69 model, this is interpreted as a 3. Re-use Of Original/Used Spring U-Bolts Is Not Recommended Due To Fatigue and Stretching When U-Bolt Was Originally Torqued. Nor does a 12 bolt Chevy axle. All Axle Shafts are constructed of high-quality steel for long-lasting durability. Carrier-bearing adapters are included for Ford 9” and 8. it is in a 1977 chevy k/20. Part #C12T-BS Price $ 130. Find the latest news about GM automotive innovations, investor relations and more. AWD V8 10,870 views. Any help would be greatly appreciated, as I want to make sure it is the rear I thought is was prior to putting time and money into it! Thanks. General Motors Co (GM: NYSE 12px 8 10 12 13 14 16 20 28 36 48 64 Default Default Helvetica Courier Garamond Palatino Times New 2 Types Of Risks That Punish American Axle's Share Price 16. A Chevy 3/4 ton pick-up may have a 14 bolt semi-float rear axle or a 14 bolt full-floating axle. I have a 12 bolt positive traction 3:73 rear end for sale. 625-inch unit and has a 27-spline shaft. 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. But, much of the information will be applicable to the original factory positraction units (originally made for GM by DANA). As for all the local and big chain parts stores - they will all gladly sell you a "strap kit" for a "1-ton GM rear axle" or "GM 10. Just Rear Ends is a family owned and operated Rear End Shop located in Reno, Nevada. Help ID a GM Rear End. (Accurate identification. A new massive and thicker aftermarket 9" Ford Housing, 3 1/4" x 1/4" DOM steel axle tubes, Moser race axles. Sierra Gear & Axle is a premium line of light-duty differential parts. GM 12 Bolt Truck. I will be swapping a 400 into my 1991, is there a way that I can use my stock rear end housing and put different axles and gears in it??? It is a 2. 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. 5" Full-Float 14-Bolt rear axle. 73 Eaton Code Ratio Posi Notes Plant DA 3. Richmond Gear is the leading manufacturer of professional quality, high performance ring and pinion sets. GM 12 Bolt Passenger Car GM12P Rear Differential Parts - Ring Gear Diameter: 8. 10Rear Suspension: SolidPinion Nut Size: 1-. Cart; Login / Register; Order Status (800) 671-5507; Menu. This means parts are not interchangeable, which can come back to bite you later if you buy the wrong assembly. 5-inch 10-bolt is actually just as strong as a 12-bolt or Ford 9-inch rear, with only a fraction of an inch difference in the ring gear diameter. I have designed and fabricate cab corner 6x9 speaker brackets for all 73-87 GM trucks, 88-91 crew cabs, and even 47-54 & 67-72 GM trucks. FORD, CHEVROLET, DODGE, CUSTOM. Dana 44s vs. 1958-1970 Full size Chevy rear differential identification chart. Plenty of Chevy inline 4 and 6 performance parts in stock and ready to go. In 1970 the rear end was built in both 10 and 12 bolt versions. 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. 42 (Rivera GS's) 10/12 bolt Pontiac: 10 cover bolts, 12 ring bolts, drain plug in cover, 31 spline C-Clip Gears available, I can't remember the company however. With the rear end jacked up how much end or side play should the axles have when I slide the tire in and out? How Much Axle "End Play" on GM 12-Bolt? December. What rear axle is in a 1972 chevy 3/4 ton 4wd pickup? Looks comparable to a 14 Bolt in size of axle tubes but didn't actually measure. GM 12-Bolt Rearend Differential Cover. In other words, the guts of a Chevy rear end will not fit in an Olds rear end housing, and vice versa. Chevy 12 Bolt Car Rear End Girdle fits all Chevrolet 12 Bolt Car Rears, Includes Canadian Built B. The reason GM went to 9. Add some visual attitude to your rear axle with these chrome differential covers. The code was also stamped in the axle housing to the left of the carrier. You would probably need to put an aftermarket posi and billet yoke. Chevy Chevelle with 12 Bolt Cover 1969, OE Solutions™ Axle Shaft by Dorman®. The kit comes completely assembled and only requires that the backing plates be bolted to your rear axle and attach the brake lines. 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. The illustration below will help identify the axle in your Jeep. 55 rear end center section is an original used two-pinion type with cast arma-steel housing. 10 Bolt Axle 5. Home; Terms and Conditions. 5" van rear. How Do You Identify a Chevy Through a Rear-End Axle Code? The Chevy's rear axle code contains information on the vehicle's gear ratio, date of manufacture and the rear axle assembly plant. 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. 5 10-bolt axles. 31 Positraction rear end from a 4spd '67 SS396. Make: Model: Description: Pinion Bearings: Carrier Bearings: Pinion Seal O. Part #C12T-BS Price $ 130. All Axle Shafts are constructed of high-quality steel for long-lasting durability. Printable version. 5″ Rear-end; How To Install Ring and Pinion Gears in a Ford 8. 1982 to 1984: 7. The boat anchor Borg Warner automatics used from 65-71, many people know what I think about them as I have a whole bayou of them behind my house, I think they are junk, but the snapping turtles love them and the EPA don't hassle me because I tell them I am creating habitat for endangered. Drivetrain com Discount Automotive and Truck Parts Ring and Pinions, Transmission and Transfer Case Parts, Overdrives, Positractions, Towing products Free technical support 800 216 1632. 5 inch axles and Chevy HD 12-bolt axles. 12 bolt chevy car 8. There are our 10-bolt 8. The Ford version uses larger axle shafts and different lube flow strategy. and let the drivers side on the. Just put some blocks of wood under the spring perches and run some lag bolts through the u bolt holes. Displaying items 1 - 15 of 37: These axle tubes are available in any length or can be shipped extra long a Price: $115. Instead of using a C-clip to hold the axle in the housing, these axle assemblies use bolt-in axles, much like an 8. GM 12-Bolt Rearend Differential Cover. It doesn't have the aftermarket parts availability that a 9" has either. The same bearings we use when build-ing a customer's. 1965 1966 1967 : $90. using Moser Engineering owned Casting Boxes. 5 rearend uses an oval cover and the housing has two small cast-in protrusions near two of the bottom cover bolts. ) GETTING WIDE TIRES TO FIT: Bolt pattern is 5 on 4. 55 rear end center section is an original used two-pinion type with cast arma-steel housing. GM 12-Bolt Two versions of the GM 12-bolt exist but have nothing more than the bolt count in common. But, much of the information will be applicable to the original factory positraction units (originally made for GM by DANA). 2 10 bolt had their own round 10 bolt rear cover with a splash lip on it. GM Corp 14-Bolt Rear Axles & More. PartsKing Part Number PKS701gasket Chrome Chevy Pontiac Olds and GM 12 bolt rear end cover gasket Camaro Nova Firebird Chevelle Cutlass GM 12 bolt Differentials. With the rear end jacked up how much end or side play should the axles have when I slide the tire in and out? How Much Axle "End Play" on GM 12-Bolt? December. Codes are described below with their location. Jeff Smith: When Chevrolet built the first Camaros in 1967, they were already in production of both 10- and 12-bolt rear-end housings. Take a look at our 12-bolt Chevy & '63-'80 Corvette spools, as well as other Strange Spool Bearing Sets available for sale here at Applied Racing Technology. 2wd to 4wd conversion kit and solid axle swap kits. In 1971, GM instituted a standardized "corporate" rear axle. Are you planning on tubbing the car? If not, then just switching to a 4 link will gain you some space for wider tires. 625-inch unit and has a 27-spline shaft. Rear Axle Identification & 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. I am thinking the short one goes on the driver's side as the ring gear is on that side. Rear Axle Measurements. There are total width end to end issues (as the 8. 1982 to 1984: 7. This rear end was available in a 10 bolt version only. I'm just curious how the numbers decode. JEGS Easy Kits are designed by JEGS Professionals to assist your shopping experience. This unit was removed from a running driving car but is being sold as is. 625 inch ring gear, 26 spline axle 1990 to 1992: 7. And some stamped. Classic Industries offers a wide selection of 1965 Chevrolet Impala parts, including 1965 Chevrolet Impala interior parts and soft trim, 1965 Chevrolet Impala exterior sheet metal, 1965 Chevrolet Impala moldings, 1965 Chevrolet Impala emblems, 1965 Chevrolet Impala weatherstrip and unique accessories, to nearly every nut and bolt needed for installation. 8 & GM 10 Bolt. The rear end came out of a 66 chevelle. I did a search in google for the cast number, a few things came up, a few chevy trucks in the 60's to 70's range. These numbers are located on the axle tubes on a 5 Lug Rear from a 6 Cyl 1971 chevy S/B truck. If you know how to ID this it will help me thanks. The smaller GM 14-bolt has a 9 1/2-inch ring gear diameter. Woody's Hot Rodz has a complete selection of 1955-57 Chevy Rear Ends. The most common GM 10-bolt differentials are the GM 8. Tech Article: The Venerable 12-Bolt Chevrolet. 875Cover Bolts: 12Ring Gear Bolts: 12Spline Count: 30Dropout: FalsePinion Support: FalseCarrier Breaks: 2. GM 14-bolt Differentials. Look next to the rear end cover bolts at 5 and 7 o'clock. GM 10 & 12 bolts are usually on the web on the front on the center section-left side as shown. What rear axle is in a 1972 chevy 3/4 ton 4wd pickup? Looks comparable to a 14 Bolt in size of axle tubes but didn't actually measure. Casting # XXXXX and NF3896839 on center housing. This assembly used an 8. 2 rear axles. 10 Ring & Pinion gearset in it now, but they make a 4. From 62 - 72 GM liked to use an Eaton rear axle too (in addition to the 12 bolt). 8", Dana 60, Chevy 12-bolt, Mopar 8-3/4” and early Olds rearends. pretty sure the 3896839 code is the GM diff. It has an E under that # It has 6 bolt axles, so it should be a truck of some sort. We Supply Round U Bolts, Square U Bolts And Semi-Round U Bolt Kits Complete. If you jack up the rear end and spin the wheels, you can figure out what rear end gears are in your housing. 75 (8 3/4) rear end LOADS FROM THE FRONT and IS THE ONLY REAR END THAT DOESN'T HAVE A REAR COVER. in Bettendorf. The posi manufacturer codes are D for Dana, E for Eaton, and W for Warner. Steve replaces the factory GM 8. if it's non posi, jack up one wheel, turn it exactly twice and count driveshaft revs. Only goodness knows how many rear ends may have been in this truck! This particular rear end was out of an early 80’s Chevy truck, a 12 bolt, but not the 12 bolt used in cool cars~ just a truck rear end with a 3:08 gear ratio, non-posi with drum brakes. Dates and casting # seem to fit right into your axle assembly date stamp. This axle is commonly used with big engines and/or overly large tires. Download these exploded view part diagrams and associated part lists to select an AAM series below that matches your GM vehicle. Dana design axles from 1977 thru 1980. Some pictures to help. I am thinking the short one goes on the driver's side as the ring gear is on that side. 31 No12 boltDana DE 3. GM 12 Bolt Truck. 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. 08: 40/13: WE: YE: 1965: GTO: 3. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. Both feature two parallel ribs cast in the side of the differential housing. Note that on this page, unless otherwise specified, Corporate X-bolt means ISUZU Corporate X-bolt, and not a GM Corporate X-bolt -- these terms are NOT interchangeable. Please note that the car and truck 12 bolt pinion yokes are the same. This PML differential cover fits the rear end differential on many GM, GMC, and Chevrolet vehicles. 75 (8 3/4) rear end LOADS FROM THE FRONT and IS THE ONLY REAR END THAT DOESN’T HAVE A REAR COVER. 5″ Rear-end; How To Install Ring and Pinion Gears in a Ford 8. Chevy 12 Bolt Truck Rear End Girdle - Original Made from 356-T6 cast aluminum, these girdles incorporate a reinforced crossbar. There are total width end to end issues (as the 8. 55 Rear End Differential OEM USED-This 1955-1956-1957-1958-1959-1960-1961-1962-1963-1964 Chevrolet 3. SVL Gears for the GM 12T Chevy 12 Bolt truck rear end are dependable enough to be backed by a six-month or 50,000 mile warranty. GM 12 Bolt Truck. 4 out of 5 stars 2. We are a Dealer in in the field of Military Trucks, Truck Parts, Surplus and Equipment. 2 Chevy-style has a round cover with an indentation running across the cover (like the 12-bolt Chevy) and 2 casting projections on the top of the rear. One of the best performance modifications that can be made to a street machine is a change in rear gears. Applications for a PML GM 10 Bolt Differential Cover. There are our 10-bolt 8. Just put some blocks of wood under the spring perches and run some lag bolts through the u bolt holes. Commonly 7 or 8. I did a search in google for the cast number, a few things came up, a few chevy trucks in the 60's to 70's range. 73:1 ratio. 12 BOLT TRUCK REAR END The differences are mainly with the pinion bearing size and the ratio/offset breakdowns (different carriers with certain ratios). Drivetrain com Discount Automotive and Truck Parts Ring and Pinions, Transmission and Transfer Case Parts, Overdrives, Positractions, Towing products Free technical support 800 216 1632. 08 No10 boltDana DB 3. Traditional BOM’s are 6 digits followed by 1 or 2 digits and start with the numbers 60 or 61. These RPO codes are used to idicate a specific type of differential and/or ring gear size.