can accept abs tone ring on pinion stem for b&d car models. The superior quality of these gear sets is the result of years of racing development, outstanding design, and state-of-the-art manufacturing methods. Classic Industries offers a wide selection of 1968 Chevrolet Camaro parts, including 1968 Chevrolet Camaro interior parts and soft trim, 1968 Chevrolet Camaro exterior sheet metal, 1968 Chevrolet Camaro moldings, 1968 Chevrolet Camaro emblems, 1968 Chevrolet Camaro weatherstrip and unique accessories, to nearly every nut and bolt needed for installation. 40 gears are exclusive to 12-bolt truck rear axles. Unfollow 12 bolt rear end to stop getting updates on your eBay Feed. At the dealer i wouldn't be surprised if they charged 1000 per axle, then marked the parts WAY up. 23:1 with a colon). The BOM will identify the model number, the gear ratio, the type of differential, and all component parts. 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. One important distinction is that the 71-81 Camaro axle is what's called an 8. All you need to do is to pop the rear cover and read the ring gear, then do the calculation to get your gear ratio. 23 Gear Ratio, 2-Series. 512-863-0900. 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. 875" 12-Bolt Truck - 30 Spline Application * Gear Ratio: 3. 42 Ratio, online price $160-$271, my price $145 New Richmond Gear 4. 5 rear differential. Select your rear gear and ratio of your choice and add it to your cart. 875" 12-Bolt Truck - 30 Spline Application * Gear Ratio: 3. 70 mph will produce 2950 rpm. its so easy. Having a problem with GM 12 bolt rear end? We offer a complete line of rear end parts for the GM 8. Stock gears are suitable for just about everything other than full-power blasts down the dragstrip … or for rock crawlers. Select your rear end housing in either a bare or powdercoated finish and add it to your cart. 73 & up ratios, #19556. A-bodies are considered to be Lemans, Skylark, Chevelle, Cutlass and from 1970-2 Pontiac Grand Prix and Chevy Monte Carlo. Spend some time in the left hand lane! With our new 3. ) is for the Chevy (c-clip type) rear. 5" rear end" or a "14 bolt full floater" or a "1980 Chevy K30 1 ton 4x4 " or whatever else you have to say to them to get one - but, in my experience (NAPA, Car Quest, Canadian Tire, and a couple of local. 76" rear axle vehicle reference guide. 73 gears (series two), the differentials will support all gear ratios without having to change carriers. Filthy Motorsports carries a wide range of parts, gears, and upgrades for the GM 8. 55 ratio 10 bolt cover 3. 08 Ratio Fits 15-17 Suburban 1500 5764358. Sport Truck Tech brings you a complete rear end guide and bolt pattern guide. There is only one "bolt in" axle replacement for a 55-57 Chevy. 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. 90 ratio 12 bolt cover 5 lug 3. Many General Motors vehicles can benefit from the replacement of their original differential assemblies with a stronger 12-bolt, 8. Thanks, Jeff. This is the second design with clutch packs on both sides. CHEVROLET Differential Cover, Polished Aluminum GM 8. For example, a stock LS1 engine sends 345 ft-lbs of torque to a rear differential with 3. GM 14 Bolt Axle Overview. Posi units, helical, mini/full spools. An engine that produces 345 ft-lbs certainly has respectable torque, but it is simply not enough to get a 4,000-pound vehicle moving. The combined gear ratios [4. A-bodies are considered to be Lemans, Skylark, Chevelle, Cutlass and from 1970-2 Pontiac Grand Prix and Chevy Monte Carlo. Rear Axle Information The 1970 rear end differs from the 1971-1981 rear end. How To Install a Limited Slip/Posi Unit in a GM 10 Bolt 8. Pontiac Rear End Gear Codes; Year: Model: Rear Gear: Teeth Count: Standard Code: Locking Code: 1965: GTO: 3. 30 but i have never ever hears of that ratio in a 12 bolt. 1 gears for sale, the same gear ratio that was commonly offered in a 14-bolt rear axle (I provided the excuse he needed to upgrade to a Dana 60), thus saving the expense of re-gearing the front 10-bolt axle and adding a little more strength up front. Commonly 7 or 8. GM 14 bolt swap into a 1/2 ton chassis This is a common swap done by many in the 4×4 world to beef up there 1/2 ton or c-clip axles. Bearings, shims, rebuilt parts. 1001 W Exchange Ave. I recall my 77 manual mentions all the GM axles, and says to consult the HD Truck manual for the 12. DANA SVL 10004683 GM CHEVY 12 Bolt TRUCK 8. 90 ratio 12 bolt cover 5 lug 3. Advance Design Trucks seem to be using rear ends with widths ranging from 58"- 62". If unknown,. 67 68 69 Camaro 12 Bolt 3. trucks had the. The ratio for 3. Finding a 3. 73 Ratio) * BRAND NEW GM12-Bolt Truck Master Bearing/Installation Kit * Everything that you need to Upgrade or Re-Build your GM 8. As the name implies, this differential has 14 bolts holding on the differential cover. 54 ratio) 30 Pickup Rear Axles. Our complete rear ends will come with you choice of the 11" LOW PROFILE OR 12" STANDARD WILWOOD DYNALITE PRO SERIES DISK BRAKES or NEW 11" x 2 1/4" FORD SVO DRUM BRAKES. This will help you pick the right size tires, transmission and gear ratio combination for your classic. 95 1st gear coupled with a 3. 1 Gear Ratio 9. Oldsmobile 12 bolt rear ends differ from Chevys internally. It would make a great rear end to swap into a square body truck. 5" Chevy S-10 gears will fit the H-Body case, but the main problem is that, in the differential case, the hole for the pinion bearing is smaller in the H-body differential than in other GM 10-bolt differentials. The 1970 12 bolt version will bolt into any second generation Camaro and quite often is done so in high power. Moser's GM 12 Bolt is no different. How to Choose. It’s actually not a very. Read Chevy High Performance magazine's technical article on calculating gear ratios. I recall my 77 manual mentions all the GM axles, and says to consult the HD Truck manual for the 12. Gear Ratio of 14 bolt? Does vin # tell you? GT5 and listed beside it 4. At a good reputable shop (not the dealer) you'll prolly pay $300-$400 per axle for labor. Most 12 bolt stuff (gears, axles, carriers, etc. also there should be a stamp on the edge of the ring gear that will say the tooth count. My rear had been sitting so long, the gears were rusty. 5-inch 10-bolt also shares the same pinion shaft diameter as the more expensive 12-bolt. I used the Chevrolet forums vin decoder on their website to diagnose what is the exact gear rat. Built to Perform, Built to Last. Rebuilt 12 bolt 4 series Eaton Positive Locking Differential, accepts 3. In other cases, people will swap in a 12 bolt, or upgrade to 3/4 ton running gear for strength. GM 10 Bolt 8. Chevy 12 Bolt Rear End. 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. These RPO codes are used to idicate a specific type of differential and/or ring gear size. i read online that you can look at the tag on one of the bolts and find it there, the number i found was 3966163, so that didnt help me and i also took off the cover and saw the numbers on the ring. More Old Online Chevy Info WebCounter says that you are visitor number: to this site. 5" Ring and Pinion Gear Set • 10 Bolt • 7. 14 gears and these rearends have been used with success. Was going to use in my 1978 Malibu but installed a 12 bolt. 76" salisbury (12-bolt) gm 9. The AAM part number is 40019659 or 74009659. 10 & down gear ratios, can instantly lock differentials and allow you to tackle the. 07:1 axle ratio, non-posi, 12-bolt rear axle assembled on November 22, 67 or 68 by the Detroit Gear & Axle plant, second shift. With the exception of truck differentials with 30-spline axles, and those carrying 2. Our complete rear ends will come with you choice of the 11" LOW PROFILE OR 12" STANDARD WILWOOD DYNALITE PRO SERIES DISK BRAKES or NEW 11" x 2 1/4" FORD SVO DRUM BRAKES. * Engine RPO code and size following the rear axle ratio are taken from build sheets, Protect-O-Plate warranty cards, or known engine/rear end combinations and may not reflect the only engine the rear axle codes came with. Both 10 and 12 bolt services are offered. 73 will be 2622 rpm @ 70. 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. How to Choose. Made from first-run steel, never recycled material, Richmond ring and pinions handle the extreme torque from high horsepower engines. Since 1984, we’ve provided class-leading helical gear, torque-sensing differentials to premiere auto manufacturers. (If you weren't "into" GM performance cars in the 1960's, this analogy may not help you. Many General Motors vehicles can benefit from the replacement of their original differential assemblies with a stronger 12-bolt, 8. A "true 12-bolt" has come to mean a Chevy c-clip 12-bolt rear. Contains theory and tech of interest and. 31 No12 boltDana DE 3. I need to know for sure if 3. Rear Axle 8. Many of these differentials are now more than 40 years old and are due for an overhaul. Richmond Gear is the leading manufacturer of professional quality, high performance ring and pinion sets. For instance, the truck 12-bolt uses a smaller inner pinion-bearing (1. For maximum traction at an economical price, G2 mini spools are the perfect choice. 5-inch 10-bolt also shares the same pinion shaft diameter as the more expensive 12-bolt. 5 the other is a 10. 00 Axle Bearings and Seals only. 00:1 rear end ratio = 2. 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. 12-Bolt Built to Order Rear End Package Complete 12 Bolt Built to Order Rear End Packages. i have a 12 bolt Gm rear end i want to put under my 49 on s10 frame but i cant figure out what the ratio is. Not recommended for high horsepower applications. Features & Details Superior Construction Ideal Replacement or Upgrade CNC-Cut from 8620 Gear Steel 3:73. If you take a few moments to study the gear chart for your transmission and rear end ratio combination you will see why this product is so popular. 90 ratio 12 bolt cover 5 lug 3. ARB Tech - What started as a simple review of the new ARB 14-bolt locker grew into a mini-bible on ARB air lockers, including installation tips and techniques and a large FAQ section. In the GM line 2. PONTIAC Axle Gear Codes Wallace Racing Code Location. What gear ratio is in a 14 bolt rear end,on a 1997 chevy silverado k1500 - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website. 373 gear ratio regardless of trans. 76 gears arrived, directly from AAM. 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. also where on the driveshaft is the stamps to determine axle ratios? from - "G92 and L98(B2L) cars finally got the Borg-Warner HD 7. Should be marks on the housing, I'd rather just turn and count. 3:73 Ratio Rear end 88-98 1500 Chevy truck 4x4 (Bu. Our 1969 Chevy Camaro SS just got a freshly rebuilt, modestly hot-rodded engine, and it's in serious need of a lower gear and some Positraction goodness. This 1955-1956-1957-1958-1959-1960-1961-1962-1963-1964 Chevrolet 3. 56 Ratio THICK Ring and Pinion Gear Set fits 2. The same bearings we use when build-ing a customer's. the smaller 14 bolt, with it's 9 1/2" ring gear, is a semi-floating design. 875" 12-Bolt CAR Rearend Posi, Gear, Bearing Kit Package - 3. 42 ratio ring and pinion gear set. This is the ratio of gears in the rearend (differential) that you may have heard of in the numerical terms 2. Gearing is what you are buying when you purchase a Gear Vendors Under/Overdrive. Housing, with OEM located mounting provisions, seamless steel tubing (3" O. 73 Eaton Code Ratio Posi Notes Plant DA 3. This is a STOCK ring and pinion from a 1966 12 bolt pickup ring gear. The superior quality of these gear sets is the result of years of racing development, outstanding design, and state-of-the-art manufacturing methods. 875" 12-Bolt TRUCK Rearend Posi - 30 Spline, Gear, Bearing Kit Package - 3. 08 and Up Gear Ratio with GM 8. 36 No10 boltDana DC 3. Unfollow 12 bolt rear end to stop getting updates on your eBay Feed. Rebuilt 12 bolt 4 series Eaton Positive Locking Differential, accepts 3. Remanufactured rear differential assembly. 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. The 12-bolt came in many different stock ratios, and it is a great donor candidate for GM owners wanting a differential with a lower ratio (more. 55 No12 boltDana DL. 40 gears are exclusive to 12-bolt truck rear axles. Moser 12-Bolt Rear End Assembly. Complete 12 Bolt Built to Order Rear End Packages. 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. There are many other "10 bolt" axle types, even the original is a "10 bolt". 9") 12 Bolt axle is available in passenger car (GM 12P) and truck (GM 12T) rear axle configurations and features an 8. This is the second design with clutch packs on both sides. Print this list and take it with you when your hunting rear axles. A wide ratio and 3. GM 12 Bolt Passenger Car - GM 12 Bolt Passenger Car Quality & Customer Service Distributor Support Warranty Info About Yukon Calculators Product Sheets Y. 73 Ratio: Differential Assembly Kits - Amazon. 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. Shop for discount Chevy 12 Bolt Truck Rear End here. Lockers, 63" wms-wms, E-brake and other options are available! Each axle is custom built to your specs. 73 gear ratio for my 70 Chevelle SS clone project. , 1/4" wall), custom alloy axles (30, 33, or 35 spline. This rear end was available in a 10 bolt version only. A rear gear training. One important distinction is that the 71-81 Camaro axle is what's called an 8. 5" and 3-1/4" for a 7. I couldn't tell any difference in the engine rpm's. This is a STOCK ring and pinion from a 1966 12 bolt pickup ring gear. 35] would provide decent off-the-line performance, even with a low horsepower engine. Moser 12-Bolt Rear End Assembly. on the market! The newly cast nodular iron housing is a direct replacement 12 bolt rear end for the 1965-1970 GM B-Body Impala, Caprice, etc. We do have gears, lockers, etc for the semi-floating (9. Advance Design Trucks seem to be using rear ends with widths ranging from 58"- 62". Motive Gear Performance ring and pinions are perfect for dedicated racing or off-road. In other cases, people will swap in a 12 bolt, or upgrade to 3/4 ton running gear for strength. Rear Axle Code example: CB G 112 1 E (CB = Ratio, G = Plant, 112 = 112th day of year, 1 = shift, E = Positraction Source) Assembly Plant Codes Buick - B Buffalo - C Cadillac - D Detriot Gear & Axle - G GM of Canada - K Warren, MI - W Oldsmobile - O Pontiac - P Pontiac/Canada - M Shift: D or 1 = Day shift| N or 2 = Night shift Positraction. Let's take a hypothetical engine with 500 ft. There are a couple of ways to find the gear ratio on a GM rear end. Features & Details Yukon Rear Gear Forged from 8620 Triple Alloy Steel 4. 31 will give nearly 3200rpm. Since we’re running large 37×12. This is a genuine AAM ring gear bolt for the GM 14 bolt 10. This means parts are not interchangeable, which can come back to bite you later if you buy the wrong assembly. wheel-drive or rear-biased all. 08s you can have more of a hole shot and still have the top end. How to Choose. 73 in it now. Ring Gear Speed = input speed ÷ axle ratio. DTS Manufacturing Capabilities - DTS Custom Services builds top-quality rear end. Externally, the 12-bolt rear end is identifiable by the cover, but internally (once the cover is removed) it can be identified by the size of the ring gear, which is 8-7/8 inch in diameter. This means parts are not interchangeable, which can come back to bite you later if you buy the wrong assembly. 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. The 1962-63 serial numbers are located on the front, right side of the differential carrier. We contacted G2 Axle & Gear and ordered a set of 4. Comes with gears, pinion seal, pinion nut. Unfollow 12 bolt chevy rear axle to stop getting updates on your eBay Feed. For example, a stock LS1 engine sends 345 ft-lbs of torque to a rear differential with 3. 08 rear end center section is an original used two-pinion type with cast arma-steel housing. For maximum traction at an economical price, G2 mini spools are the perfect choice. We offer 9 inch rear ends, ford 9 inch third member dropout, Ford 8 inch third members, Complete crate bolt-in 9" rear ends and 12 BOLT rear ends. its so easy. The 14 bolt differential is a popular axle swap option for Jeep Wrangler owners, and is referred to as the "corporate" 14 bolt because of the odd nature of GM's corporate structure in the 1970s. The BOM will identify the model number, the gear ratio, the type of differential, and all component parts. The rear axle that was in my 59 Apache was not the original. Rebuilt 14 Bolt Corp Duel Rear Axle Gear Ratio changes from 375 to 456 $325. I can find only one number on the pinion gear # 653880042-12-37 GM, these gears are 3:08 ratio. normally you just divide the ring gear teeth by the pinion teeth which in your case comes out to 3. 55 ratio 10 bolt cover 3. For example, a stock LS1 engine sends 345 ft-lbs of torque to a rear differential with 3. Motive Gear Performance ring and pinions are perfect for dedicated racing or off-road. The phrase, "more like a 10-bolt", is usually talking about the size of the ring gear and/or strength of the carrier. Complete Kit- Earth Shaking. Apparently the Gov Lock is also something that isnt very reliable but it hasnt failed yet. 2 10 bolt is great little rear end, I have a 1970 Chevy Nova that runs 11's through the quarter with a 1:56 60′ time. For the 64-82 GM 12 bolt Rear Ends they have gear ratio ranged from 3. I have been noticing that my gears seam to be having a difficult time, and it is really affecting the performance of my car. An engine that produces 345 ft-lbs certainly has respectable torque, but it is simply not enough to get a 4,000-pound vehicle moving. One important distinction is that the 71-81 Camaro axle is what's called an 8. This unit was removed from a running driving car but is being sold as is. 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. 5 10 bolt gear setup and final assembly. GM 12 Bolt Posi, Eaton Car and Truck. The 3725899 is the casting # and the D3063 is the date code April 30 1963. , 1/4" wall), custom alloy axles (30, 33, or 35 spline. CHEVROLET 12-BOLT 1/2-TON TRUCK Bearing Set This bearing, race and seal set is the finest money can buy. The 12-bolt came in many different stock ratios, and it is a great donor candidate for GM owners wanting a differential with a lower ratio (more. 1982 to 1984: 7. Divide the ring gear teeth number by the number of teeth on the pinion. 21 ratio 12 bolt cover 8 lug (3. 875" 12-Bolt CAR Rearend Posi, Gear, Bearing Kit Package - 3. Driveline Systems is a unique customer solution, that simply stated provides value. My cost was $ 275. When looking at a 12-bolt rearend, it is important to know that 12-bolt axle assemblies use different components for cars and trucks. I found that is from a 1971 C10. My plans are to update to a 350 and 700r4 someday and figure I should look for the best ratio for the daily driver routine in this work truck for best gas mileage. Original GM 3 series positive traction unit with 140 part number. 9") 12 Bolt axle is available in passenger car (GM 12P) and truck (GM 12T) rear axle configurations and features an 8. He can use aftermarket gear and pinion set. For example, a stock LS1 engine sends 345 ft-lbs of torque to a rear differential with 3. For instance, the truck 12-bolt uses a smaller inner pinion-bearing (1. Switching your rear end gear ratio helps your gas mileage or improves your power!. 50-inch ring gear 10-bolts and 8. Richmond Gear is the leading manufacturer of professional quality, high performance ring and pinion sets. 21 ratio 10 bolt cover 3. 875" 12-Bolt TRUCK Rearend Posi - 30 Spline, Gear, Bearing Kit Package - 3. It’s actually not a very. 875" commonly referred to as the 12 Bolt truck differential, this differential was utalized GM used this very popular differential in there full size Chevrolet trucks starting in 1964 to 1982. All you need to do is to pop the rear cover and read the ring gear, then do the calculation to get your gear ratio. The above ring gear mount spacing situation is analogous to the 3-series and 4-series carriers for the 12-bolt Chevy passenger car rear. 07 Yes12 boltDana DG 3. These RPO codes are used to idicate a specific type of differential and/or ring gear size. How To Install a Limited Slip/Posi Unit in a GM 10 Bolt 8. Chevy Impala with 3. 00:1 rear end ratio = 2. Then I found a 70's-era 12 bolt with a 3. here is a close-up of a 14 bolt gm rear end. This is a STOCK ring and pinion from a 1966 12 bolt pickup ring gear. 1001 W Exchange Ave. DTS Manufacturing Capabilities - DTS Custom Services builds top-quality rear end. It has a full plate-style posi unit, 31 spline axles, no C clips, large diameter drum brakes, shares the same 5 x 5 wheel bolt pattern as the truck. Moser 12-Bolt Rear End Assembly. Also, when putting in a 71-2 rear axle into earlier models, you will have to shorten the driveshaft approximately 1. 73 ratio opt GT4). 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. Welcome to Torsen ®. How to Easily Find Rear End Gear Ratios chud327. CHEVROLET 12-BOLT 1/2-TON TRUCK Bearing Set This bearing, race and seal set is the finest money can buy. To determine what size gears you have, look on the center section on the web it will be in the casting. YSPBLT-010 - Replacement ring gear bolt for Model 20, Grand Cherokee 35, "Super" Dana 30 & Dana 50. GM RPO Codes, or General Motors “Regular Production Option” codes contain lots of valuable information about your GM vehicle. GM Positraction rear ends have been around since the late 50's, they came in several different ring gear diameters, but the 12-bolt 8. 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). 12 Bolt Built to Order Housing & Axle Package 12 Bolt Built to Order Housing & Axle Packages. Moser 12-Bolt Rear End Assembly. It is the gear under your seat that counts. A different 12-bolt differential was used for light truck applications and those 12-bolt units are not interchangeable. 875" commonly referred to as the 12 Bolt truck differential, this differential was utalized GM used this very popular differential in there full size Chevrolet trucks starting in 1964 to 1982. came with a. ) has its own specs, and these are usually included in the gear-set instructions. For instance, the truck 12-bolt uses a smaller inner pinion-bearing (1. Rebuilt 12 bolt 4 series Eaton Positive Locking Differential, accepts 3. 3 SERIES DIFFERENTIALS WILL ONLY WORK WITH THE 3. 42/1 code GU6 3. We have inspected the ring and pinion so as to ensure minimal ware and tare on the differentials that we sell. The 12-bolt came in many different stock ratios, and it is a great donor candidate for GM owners wanting a differential with a lower ratio (more. Mine was 2. 08 gears, I may switch to a 12 bolt Chev rear end. Car part for sale, 373 chevy rear end gears off a 12 bolt rear end out of a 2 wheel drive. Toggle navigation Community Chevy 12-bolt Rear End Ls-6 Ls6 Ls5 Chevelle Crv 3. 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). 10 & up ratios, #19555 -12 bolt GM truck, 30 spline, 2. 8 Inch Rearend; How To Rebuild a GM 10 Bolt Chevy 8. The Dana Crate Axle Program provides a solid foundation for your next drivetrain build. a 14bolt has 2 different covers one is a 9. 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. 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. 438 inches versus 1. 11 ORIGINAL. the easiest way to check gear ratios is to jack up one side of your rear end and with the transmission in neutral spin the tire thats in the air. 2l v8 engine chevrolet silverado (ext cab: 6. 73 RATIO , RING AND PINION. 08: 40/13: XE: ZE: 1965. The Detroit Locker is the most durable and dependable locking differential available and maximizes traction by delivering 100% of the torque to both drive wheels. 5 inch differential on. 08 gear set would fit in my 12 bolt rear end, there is 3. A GM 12-Bolt. Where to buy. PowerTrax produces a full line of traction products. on the market! The newly cast nodular iron housing is a direct replacement 12 bolt rear end for the 1965-1970 GM B-Body Impala, Caprice, etc. ) has its own specs, and these are usually included in the gear-set instructions. Davin goes step-by-step to show you how to swap out your rear end with a burnout-approved limited-slip differential…. Package includes; New Moser 12-Bolt Made in the U. Stock rear end gear ratio in 2006 Chevy silverado 1500 Z71? a 10 bolt differential case has a 8. That don't make sense! It has a 250 L6 and a SM465 4 speed (not orginal). Remanufactured rear differential assembly. was it a 307, 350, or 396. Chevy Bel Air with 3. Americanlisted has classifieds in Enid, Oklahoma for new and used car parts. For those of you who are considering doing away with the torque tube and converting to an open driveline, the Colorado/Canyon/Isuzu "I" trucks gives us a rear-axle swap option in a 6-lug (6 on 5. 5" to accomodate the larger yoke found on the 1971-2 axles. 12-Bolt Built to Order Rear End Package Complete 12 Bolt Built to Order Rear End Packages. do NOT contact me with unsolicited services or offers. The same bearings we use when build-ing a customer's. normally you just divide the ring gear teeth by the pinion teeth which in your case comes out to 3. 31 will give nearly 3200rpm. Is there a place I can look to find the gear ratio for ther rear end of my 1964 c10 stepside truck? It has a 12 bolt rear end in it. Note: have pity on me when asking for a phone quote.