As a result, this construction became one of the most popular axle assemblies on the market due to its durability and affordability. Next we disassembled everything, starting with the cross pin bolt, cross pin and C clips. Usually, when people are discussing gear ratios, theyre referring to the relationship between a pinion gear and a spur gear. Only 1 nut, it all depends on if your using a new crush collar or not and if your just swapping out the pinion yoke or a full rebuild. Furthermore, this action reflects positively on the company's overall commitment to providing reliable transportation services while ensuring its customers' safety remains paramount at all times. This applies to all types of vehicles with any type of gearing system regardless of pitch or size it doesnt matter which one you change as long as you can adjust it accordingly. (Note: The 7.5 GM rear used different pinion bearings in 1979-80 vs. the 81-up axles, so you want to make sure that the old bearings match up to your new pinion bearings). Is a GM 10 bolt rear end good? The pinion nut is a 32mm or 1 1/4" so you need a socket and adapters for that. It involves placing a collapsible spacer between the bearings of the pinion gear, then using a torque wrench to tighten the pinion nut until it reaches the correct amount of pressure or preload on the bearings. Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. 12 Bolt Rear Axle Torque Specs. That does not describe how tight the pinion nut needs to be however. Tightening Torque Clamp Load 1989 Toyota Pickup/3vze/R150F/Dual RF1A's/8.0 Detroit/8.0 Detroit/5" SAS/38 TSL'S. 9 Minutes Read / An 8.2 (shown) will have the same contour as the cover. By doing this, it allows for the desired amount of pressure or preload to be applied on these bearings so they are able to work in harmony with each other within their particular drivetrain system. 440-500 lbs ft and I wouldn't tackle it bring it somewhere where they know what they are doing..I have a four foot torque wrench that goes to 500 but thats one hell of a grunt and you have to hold the flange while doing this. If the nut is loose then the crush sleeve must be changed. Thick Gears and Carrier Breaks - Thick ring and pinion gears and differential carrier breaks explained. Once you get close to the right pinion preload, shim thickness adjustments need to be made in the .003 and down range to make adjustments, small increments make a big difference in pinion preload. To ensure optimal performance in any application, it is essential to pay close attention to the amount of backlash between gears on all differentials. . This is done in order to decrease pre-load on the bearings; adding more shims will have an overall effect of decreasing it. With the carrier removed w/ new bearings pinion bearing preload should measure a rolling torque of 20-30 in/lbs. These have been around since 1975, and were installedunder cars, small trucks, and vans up to the 2005 model year. DANA SPICER: .035. After that we removed the old bearings and cleaned all the parts up in the solvent tank. There are a few that have geared axles on here so they should chime in and help out with Real TECH :rocking: The most current parts and application information can always be found here on our website or by calling one of our differential parts experts. While backlash is a necessary component of manufacturing tolerances, it can be a significant source of problems for certain applications. Carrier Cap Bolts. grade 8. when assembling the pinion into place, include the crush sleeve between the two pinion bearings. If rotating torque is low, tighten pinion nut in 6.8 Nm (5 ft. The axle shafts are also held in place by four-bolt retainer plates at the outer bearing, not C-clips. The 8.5-inch 10-bolt rearends have ten 3/4-inch hex head bolts with 7/16-20-inch left-hand thread bolts that hold the ring gear to the carrier. To begin, the yoke or coupler must be attached to the pinion shaft. The control arm-mounting ears on top of this 7.5 rearend denotes it is usable for any 1978-88 GM A or G-body intermediate like a Cutlass, Monte Carlo, El Camino, Malibu, Regal, or Grand Prix. Tighten bolt to 20 ft/lbs. The 12-bolt is generally considered to be the stronger of the two rear axles. The amount you tighten the nut (with or without the crush sleeve) is based on the amount of force measured in inch pounds it takes to rotate the pinion. This website uses cookies or similar technologies to enhance your browsing experience. It is important to have the right pinion nut for your 8.5-inch 10-bolt rearend. Ring gear bolt torque: 110 ft*lb. That is theimpetus for why we decided to put this swap meet/junkyard identification guide together. If it takes a 1/2-inch wrench to remove it, its an 8.2. for new bearings. Find out how to access AutoZone's Torque Specifications Repair Guide for 300, 300C & Magnum 2006-2008, Charger 2006-2008. Try our Differential Gear Calculator. It's essential that you use enough force while tightening down the pinion nut so that your component will stay securely attached; however, it's equally important not to over-torque the part, which could cause permanent damage or deformation. A higher engine power combined with more torque enables cars to accelerate faster while using less fuel - making it much more efficient and cost-effective in the long run. It is internally different from the 8.2 Chevy, but has the same external bosses and brackets. It also has an inner diameter of 1 3/16", allowing it to accommodate most 30 spline yokes without any extra modifications or components needed. By following these steps carefully and precisely, you can ensure that your gear and carrier are set up correctly for optimal performance. Well help you determine the correct flexplate for your Chevy engine in this buyers guide. increments until rotating torque is achieved. Although the 7.5-inch 10-bolt closely resembles the 8.5-inch housing, you can positively identify the Chevy7.5-inchrearend by measuring it. I have a leaky pinion seal and housing seal so I am planning on replacing the seals in the very near future. Tightening Torque Clamp Load (lbs.) . Give us a try, we think you'll be glad you did! Step 1: To seat, torque nut to 50 (lb-ft) while . I have seen the ring gear bolts, pinion nut and retaining bolt come loose, but never a bearing cap bolt. Pinion preload (used bearings): 8 - 10 in*lb. We'll send you the most interesting Chevy Hardcore articles, news, car features, and videos every week. 24-32 INCH pounds?? After it has been properly crushed (by checking the rotating resistance of 19-22 inch pounds on the pinion) there should be at least 150 pounds torque on the pinion nut (or else you pull it apart get another crush sleeve and start over). We will safeguard your e-mail and only send content you request. The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. This process must be done carefully, gradually increasing the tightness of the nut in increments until it reaches the desired torque level required to rotate the pinion correctly. This axle was found in various vehicles from Chevrolets and Pontiacs to Oldsmobiles and Buicks with some of these models continuing production well into the early 80's. For reference use at own risk. Its strength and reliability have been proven time again, making it an excellent option for drivers looking for reliable performance from their vehicle. They say ignorance is bliss but I say it's just damn expensive. Use the blue medium strength on the retaining bolt and the red on the others. On the other hand, if preload is too tight then you'll need to take out the pinion gear and add extra shims in order to reduce bearing pressure against the races. to do this. 7/16" x all lengths 60-65 ft lb. Torque Specs on Dana 60. If you locate a rearend that has coil spring perches, it could be from a G, A, B-body, or El Camino. lbs.) 8-11 in/lbs for broken in bearings is acceptable. It was first developed for racing cars where superior control on fast corners is essential for success; however, today torque vectoring differentials can be found in many production vehicles as well due to their exceptional performance benefits. FSM says 181-325 ft-lbs. There is a difference, but you cant see it unless you set both units on their side, and then measure the distance from that surface to the face where the ring gear attaches. The large flanges are easy to grip and make installation or removal easier than ever before, allowing you to easily tighten or loosen the nut without fear of it slipping away. . Crankshaft Pulley to Crankshaft bolt 77. If it checks out you can put your axles back in, C clips on, cross pin and bolt and you are ready to put the cover on and fill it with rear end lube! Set the preload carefully (see "Set Up Specifications") so that the bearings will have a long life. Since it was so widely used, there is a better possibility of finding one of them at a salvage yard thanlocating a 12-bolt. This is an 8.2 BOP axle. 10.50 PINION NUT: GM . In addition, if the sleeve is over-crushed during installation then it must also be discarded and replaced with a new one as crushing it too much can cause damage to other components within your transmission. The OEM pinion nut is 1 1/4 inches. If the backlash is too tight, you'll need adjust the carrier shim by moving it away from the pinion. with an impact. Whilethe 10-bolt rearendslineage can be identified by the code stamps, which are usually on the passengers side axle tube, there are literally hundreds ofpotential codes for the three different 10-bolt rearend housings. Step 1: To seat, torque nut to 50 (lb-ft) while spinning hub. Looking for a driveshaft for your 67-72 C10? Uses 28 or 30 spline c-clip axles. Like the 8.2-inch 10-bolt, the 8.5 10-bolts use C-clips to retain the axles. Come join the discussion about performance, lift kits, wheels, tires, modifications, troubleshooting, maintenance, and more! Locate a Sierra Gear & Axle Distributor near you. The 8.5 rearend will have a round cover, and part of the cover will extend rearward to make room for the ring gear. 8 to 11 in-lbs. 9 Minutes Read / Used bearings 10 to 14 inch pounds. TORQUE-TENSION REFERENCE GUIDE Printed in U.S.A. Supply Part Number: 9702365 AS 06/14 Torque Poster . Call 800.979.0122, 7am-10pm, everyday. Continue tightening the pinion nut to collapse the spacer and preload the bearings. With the exception of truck differentials with 30-spline axles, andthosecarrying 2.41 and 2.73 gears (series two), the differentials will support all gear ratios without having to change carriers. 7.25 12-14: 6-7: 6-10: 55: 50: 8 IFS: 12-15: 6-8: 6-10: 55: 60: 8.25 12-15: 6-8: 6-10: 55: 60: 8.75 - 41 Case: 13-15: 6-8: 6-10: 55: 90: 8.75 - 42 Case: 15-25: 7 . The Hex is 5/16 the threaded part is SAE 5/16 inch 18 threads per inch. Additionally, this nut features a thread pitch of 11/16 x 20 which allows for easy removal during maintenance periods or when replacing bearings or other components within your axle assembly. On the other hand, if there is too much backlash then this will also lead to excessive mechanical wear due to increased friction and noise as the teeth continually rub against each other. Pinion Nut Torque Spec. It also uses a 10 5/8-inch irregular-shaped cover. in order to compensate for the drag of the new seal, the nut should be tightened more until the rotational torque of the pinion slightly exceeds what was recorded earlier, but not by more that 5 in/lbs. With its strong construction and durable material, the PYN10 10-bolt 8.5" pinion nut makes for an excellent choice for those looking for reliable performance in even the most extreme environments. It is well known that altering the gear ratio of a vehicle, whether it be through changing the pinion or spur gear, can have a significant effect on performance. There is an anomaly to the corporate 8.5-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. Backlash arises when two gear teeth mesh together in order to transmit power from one shaft to another; the teeth need some play to avoid jamming and ensure smooth operation. Sometimes, pinion bearing preload can be a tricky procedure. Additionally, vehicles with higher torque have better control over their handling due to stronger low-end acceleration which makes them safer on roads and highways. In addition, if a crush sleeve is over-crushed during installation then it must be discarded and replaced with a new one as it will no longer be able to provide the necessary level of tension between the bearings for them to function properly. However, when you have new gears, a new posi unit, and other variables like mixing housings with differentials you might have to try multiple shims to get a good pattern. When working on the assembly of a differential, there are two methods for adjusting the pinion depth. Recheck the torque to turn the pinion until it gets to the point where the amount of torque it takes to turn the pinion is between 15-25 in. Allstar Pinion Nut GM 7.5 8.5 ALL72156. Ring gear bolts 65 foot pounds, bearing cap bolts 60 foot pounds. This method works every time is done precisely as described. This is very important, because if you go too far the crush sleeve will be ruined. you have it pretty much. The pinion shaft diameter is 1.625 inches and will have either 28 or 30 splines. But for all intents and purposes, the 10-bolt rearend is a great unit for a street/strip car, and can be stout enough to handle even the occasional abuse delivered by use at the racetrack. Race-spec ring and pinion gears for desert racing, rock bouncing, and rock . If sticky tires are used, youll quickly turn the 7.5-inch rear into a pile of unusable parts. Generally speaking, these torque specifications will fall between 20-30 ft/lbs; however, for most applications ARB recommends a torque specification of right around 25 ft/lbs. The concept of low-end torque is an important one for drivers to understand when it comes to the performance of a vehicle. Instead of using a C-clip to hold the axle in the housing, these axle assemblies use bolt-in axles, much like an 8.2 BOP rearend. The tension between the bearings of a crush sleeve is a very important factor in its performance, as it helps to ensure that the bearing stays correctly set and does not move or become misaligned. Assemblers must decide for themselves how much leeway they are willing to allow in this area and assess whether the potential results would warrant such leniency. The 8.5-inch is often referred to as the "GM corporate 10-bolt" because of its multiple uses, and the 8.5-inch is a semi-float axle, meaning it has only one axle bearing per side, mounted inside the axle tube. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Inside, the ring-gear bolts are the same as the 8.5 corporate unit, but the pinion-shaft diameter measures 1.438 inches. Known alternatively as the GM 8.875-inch (referring to its ring gear diameter), Chevrolet's 12-bolt rear end is one of the most celebrated in the American hot-rodding scene. The PYN10 - 10-Bolt 8.5" Pinion Nut is perfect for 30 spline pinions, providing a dependable and secure connection between the driveshaft and differential ring gear. When in doubt, refer back to step #6 for more information about suggested torque specs for your particular axle installation project. Products include ring and pinion sets, installation kits and axle shafts for GM, Ford, Chrysler, Jeep, and Toyota vehicles. A Series 2 carrierwill work with 2.56 and higher gears (numerically lower) such as 2.41. However, the gears will not interchange with a Chevy 8.2. I was able to pull the old crush sleeve from the pinion gear shaft without damaging it, so I just reused it and added a 0.51mm shim to it. I like to measure the old crush sleeve and machine down a solid pinion spacer to that dimension and then . We believe that our exceptional customer service and product knowledge is what sets us apart from the competition. It is important to note that if possible, it is best practice to use an old or used pinion nut for this operation, as new ones can often bind when tightened too much. May 22, 2021 / sny 00235 converted How Much Hp Can Stock 5.3 Injectors Handle, What Kind Of Gas Does A Jeep Cherokee Take, Popping Noise When Accelerating And Braking. For bearings that are already in use, set preload at 15 inch-pounds; if they are new bearings then you should aim for 25 inch-pounds when setting preload. tighten the nut down till its snug and put on your torque wrench and turn it about 3 revolutions. This article is a compilation of information and and specs relating to the venerable GM Corporate 14 Bolt full-floating rear axle - also referred to as the 10.5" (after the size of the ring gear in inches) or just simply the "14b" for short. While adjusting preload can provide some relief from overly-stiff or soft springs, ultimately you should replace the springs themselves if they dont provide the desired level of performance. Unfortunately, once this tension has been released the crush sleeve cannot hold it again. The PYN10 pinion nut has been specifically designed to fit 30 spline pinions and provide a secure fit and lasting performance. The 8-inch rear axle looks very much like the popular Ford 9-inch rear axle. Increasing the size of the pinion or decreasing the size of spur gear will result in increased top speed for your vehicle; however this will come at cost to acceleration and increase temperatures from increased load. It was in the 30-35 I "think" from GM. 2429 Mercantile Drive Suite A, Rancho Cordova, CA 95742, Copyright 2023 West Coast Differentials | Website Design by. Then use lock-tight on the threads and tighten the nut back to where it was. Not only was the 10-bolt assembly used in low performance applications, but it was also utilized in a variety of different vehicles ranging from Camaros, Chevelles and Impalas to even the earlier Chevy IIs. Here's a link to when I did mine. Step 3: Back off 3/8-turn for automatic hubs, and just enough to free the bearing for manual hubs. I also like to put some oil on the seal surface of the yoke to avoid tearing the new pinion seal. The covers on the 8.5-inch rearends are often 11 inches round with a bulge on the drivers side to accommodate the ring gear. This process helps increase longevity of both the pinion gear and its tapered bearings while also providing optimal performance from both components at all times. You can simulate pinion bearing preload by tightening the pinion nut until the proper amount of drag is felt with only motor oil on the pinion . The distance between thebottom center bolt in the cover and its adjacent bolts is 3 1/4 inches. Bear Preload IN. Now that the hard part is done you can re install the carrier with the shims in place, torque the bearing caps and run one more contact pattern to make sure everything is good to go. This will ensure that your backlash is correct without having to swap the shims. With the pinion bearing properly lubricated, increase or decrease . It is important to follow the instructions that came with your differential cover, as torque specifications can vary drastically depending on the material and grade of fastener used as well as the material of the diff cover itself. Pinion Nut (Solid Spacer) 28-Spline Pinion - 200 ft lbs. Use oil on the pinion nut washer surface during all assemblies . Mgrotel, nice cliff notes. I reused the old crush sleeve and just added a thin shim out of the set to be able to get the pinion preload using the old crush sleeve. Products include ring and pinion sets, installation kits and axle shafts for GM, Ford, Chrysler, Jeep, and Toyota vehicles. Reply Quote. It's got a 350 with a 10-bolt rear end. FOR 1994-2001 CHEVY S10's & GMC SONOMA's. **ALL TORQUE SPECS ARE PER GM FACTORY & HAYNES MANUAL**. If youre looking for a good.economical 10-bolt rearend to rebuild or install into your hot rod, you will need to be able to accurately identify thedifferent units so you dont accidentally come home with a 7.5 or 8.2-inch differential. Preloading a bearing eliminates the clearance, which increases stiffness and reduces friction. 2.2L FOUR CYLINDER ENGINE: Camshaft sprocket bolt 96. 2. unbolt pinion nut. How to eliminate unwanted to holes in your car's body, trunk, floor, or firewall with easy to use patch plugs from Speedway Motors. We talked to a few of our in-house race experts about ways to make this racing season your best one yet! The 8.2-inch 10-bolt has a smooth, round, lower-case area (no cast-in protrusions), with an 11-inch cover that has a diagonalprotrusion at the top. Therefore when dealing with these types of sleeves it's important to make sure they are installed correctly so as not to compromise its integrity or longevity. Mine was a pita. for a ten bolt rear it should be about 20 inch pounds while you are turning the torque wrench. (note make sure the pinion bearing is well oiled when doing this procedure.) All of the parts we sell are also used every day in our busy service shop. The Fora platform includes forum software by XenForo. If it takes more than 25 in lbs to turn the pinion, then you have tightened it too much and you need to back the nut off. Torque is a measure of rotational force that must be applied in order to secure components such as axles and other parts together. 1. New bearings 19 to 22 inch pounds. FORD: .020. This sleeve must be replaced every time the pinion nut is torqued. 4.replace seal. Have a seal puller if possible, makes getting the old one out a lot easier. Its strength and durability make it an ideal choice for those who want to take their car out for some fun on the track without having to worry about its performance or reliability. Whats The Reason Enthusiasts Cant Get, Yes I Am A Dinosaur, And Why I Feel Electric Cars, Rare Rides: The 1969 Chevrolet Camaro COPO, SPEC Clutches: For That Next Engine Swap Or OEM Upgrade, Shop Tour: Brian Tooley Racing Expands To Be A One-Stop Shop, Moroso Anti-Roll Kit Is The Right Tool For The Dragstrip, Why You Need A Proper Fuel Tank Vent In Your Ride, Fenix Is A Next-Gen 69 Camaro With 1,180 Horsepower. It has been proven to be reliable in high-performance and high-horsepower applications, but it can also handle occasional abuse from use on the racetrack. 35-Spline Pinion - 250 ft lbs. Oct 20, 2011. This assembly featured an 8.2-inch ring gear diameter as well as 28-spline axles which provided adequate strength for these vehicles. .006" to .010" 120 ft-lbs. The torque required to seat the nut is very large, possible 200 ft-lbs or more. If a bearing system is designed to have no clearance, then preloading is necessary. It said you want this to be from 5-35. This essential part is designed for use on vehicles with a 1 1/4 inch socket and 7/8 x 14 thread that can be found in many common automotive applications such as differential covers, yokes, and axle shafts. Is that really all it takes? Another way to tell the difference between an 8.2 and an 8.5 rearend is to pull the cover and look at the bolt holding the spider gear crosspin. When I changed all the bearings in my suburban rear end, I bought the crush sleeve eliminator shims from Summit. Zach got enlisted by a friend to help rebuild the 7.5" factory 10 Bolt rear in the G-Body Monte that he is working on, so naturally it became a teaching moment. Some builders . On top of that, many pickup owners find that making such modifications also provides them with a greater sense of control over their vehicles capabilities, allowing them to feel more confident and secure on their journey no matter what lies ahead on Oct 5 2022. Read More. We started by getting a rebuilt kit from Motive Gear . We look forward to serving you! . Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. Part Number. If i missed any thing PLEASE tell me. Crankshaft Main Bearing Cap Bolts 70. How involved is the process of changing it? The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. You will also notice the large, flat, cast-in protrusions at thefive andseven oclock positions. There are several differentials for the 10-bolt rearend. This technology is particularly advantageous in improving vehicle handling and traction under all types of driving conditions, from wet roadways to tight turns. The date and location of manufacture coding changed in 1971. Not only has the 10-bolt rearend proved its worth in high-performance, high-horsepower applications, but it has also been found to be a great unit for street/strip cars. Sometimes, you need to push yourself. Search Car Torque Specifications by Engine or Model When additional shims are added, this increases the total width of the retainer assembly, pushing the bearing cones further away from their respective cups and as a result reducing drag on them. One intimidating part for a lot of guys is the rear end. That being said, limited gear sets are offered for the carriers, especially if you plan to change gear ratios. We show you how to keep that old GM transmission when swapping in an LS engine. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. This procedure is necessary in order to ensure that everything within the drivetrain is working correctly and efficiently. Come join the discussion about Silverados, Sierras, and other full size trucks performance, modifications, suspension, lift kits, tires, maintenance, and more! Before disassembly, we marked the bearing caps and kept the side bearing shims on the correct side. I used an 18" breaker bar with a 2 foot pipe on the end of it in order . It doesn't have to be hard, and we offer some tips to keep your car's finish in top shape. Torque measures the amount of force that is generated when the engine rotates at a certain speed. Here is my related question at almost 1 a.m. and torn down in driveway need to get to work: There was quite a chance that you have crushed the sleeve beyond the preload spec to make it hard to turn. First I measured the old crush sleeve as a starting point. This distance must be precise; if it is too small, the gears will bind together and cause mechanical stress which can lead to premature wear or failure. Gear oil is nasty stuff, mostly in smell. Rotate the pinion when tightening the nut to seat the bearings evenly. Copyright 2023 Sierra Gear & Axle - Web Design by Zenxeon Technologies, Backlash for Aftermarket gears .006 -.012, Instructions Differential Installation & Setup, Differential Setup & Torque Specifications, GM RPO Codes Axle & Ratio Identification, Measurement Axle Shaft Length & Bolt Circle. If in doubt, consult our staff of differential parts specialists. The first is to use a crush collar; this involves applying pressure between the yoke and cup until it reaches the desired depth. Sometimes when repairing or replacing components within a transmission, you may encounter a crush sleeve. See other Red Line Oil Products that we recommend. **Note the Pinion nut is in INCH pounds Ring Gear Bolts = 55 lb. With this pinion nut, you can rest assured that your vehicle will be ready for whatever terrain comes its way! It should be noted that while this axle is suitable for everyday driving and light duty applications, it must be upgraded if you plan on doing any serious racing or off-road activities with your vehicle. GM 10.5" 14 Bolt: 20 to 35 in-lbs. . Sometimes it feels like youre in a race car when you accelerate hard with a high-torque vehicle. The GM 8.5" 10 Bolt axle, also known as the GM 8.6" axle or GM 10-Bolt, is available in many front and rear axle . Most 8.5-inch 10-bolt rearends have two extruded, cast-in lugs on the bottom of the differential housing at the 5:00 and 7:00 positions.

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