Locate a Sierra Gear & Axle Distributor near you. We show you how to keep that old GM transmission when swapping in an LS engine. Our Mopar flexplate buyers guide will help. tighten the nut down till its snug and put on your torque wrench and turn it about 3 revolutions. As well as many other third member torque specs from Strange. Now that we know our pinion depth shim is correct we can do the final assembly. Too much won't hurt anything other than break the bolt. Pinion nut has no torque spec. 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. You can replace the pinion seal without changing the crush sleeve. 8 & 9 BOLTS Locknut Size Threads per inch Steel Hex Locknut Steel Hex Flange Nut Grade C FNL Grade 9 Grade F Grade G Clamp Load (lbs.) Sometimes, pinion bearing preload can be a tricky procedure. Continue tightening the pinion nut to collapse the spacer and preload the bearings. So, in order to adjust the pinion bearing pre-load, shims of varying thicknesses are inserted into pre-load retainers. Once you give everything a thorough inspection you can begin the re-assembly process. Good luck finding one of these, however, as they are very popular among performance enthusiasts. The torque required to seat the nut is very large, possible 200 ft-lbs or more. This technology is particularly advantageous in improving vehicle handling and traction under all types of driving conditions, from wet roadways to tight turns. Alternatively, shims can also be used to adjust the pinion depth. Dana 60. Check the pinion preload by rotating the pinion with a torque wrench. For a better experience, please enable JavaScript in your browser before proceeding. Step 2: Back off, then torque to 35 (lb-ft) for automatic hubs,or 50 (lb-ft) for manual hubs. When looking at the housing from the rear, an 8.5 will have two squared off chunks of casting hanging on each side near the bottom of the differential. Speedway also offers the Economy Ring & Pinion Setup Tool we needed. His passion for performance got him noticed by many locals, and he began helping them modify their vehicles. Axle Retainer Plate Nuts: 3/8" T-bolts - 30 ft lbs. 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. Record pinion flange rotating torque, with a torque wrench. 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. The side bearing preload is the difference of preloads (5) x the gear ratio (3.73) = 18.65. and 12 bolt #s. found these #s at Richmond Gear: Torque specifications. If you installed a new seal, add 1 or 2 in-oz. Ring and Pinion Ratio Variations - An explanation of why some ring and pinion gear ratios vary. Additionally, it increases load capacity because it prevents misalignment due to vibration or thermal expansion of components. 8-Inch Ford Rear End Torque Specifications. Preload plays an important role in many machine designs for its ability to reduce wear and tear on critical components while improving efficiency and accuracy. minimum is 181 ft-lbs., maximum 325 ft-lbs., keep cranking till you get within the range of 7.8-11.3 in-lbs of preload torque on the pinion. Sure, you know whats in there and what it does but are you willing to tear into it and rebuild the differential? Chrysler 300 and Dodge Charger 2006-2008 Torque Specifications Repair Guide. Unfortunately, once this tension has been released the crush sleeve cannot hold it again. 1. Inch pound torque wrench that will read that low of a number which will be "VERY" costly. The 8.5-inch pinion diameter is 1.625 inches, whereas the 8.2-inch is smaller at 1.435 inches. The pinion diameter is 1.438 inches, and has 25 splines. Originally, gear ratios ranged from 2.41 through 4.10. Like most 10-bolts, the axles are held in place by C-clips on the inner end of the axles. Axle Type Cover Bolts FT. LBS. 2023 Power Automedia. You will need a torque meter in inch-lb. grade 8. These are incredibly robust pieces of machinery that can handle a surprising amount of power, as long as you use the right axle for your application. Some vehicles require an 8.5" 10-bolt pinion nut to secure the rear axle assembly of their vehicle. All rights reserved. It is estimated that this specific axle saw use on over 11 million vehicles during its reign of production making it one of the most popular axles ever created by GM for their consumer market line up. Reports from multiple Chevy Bolt owners confirm that on May 28th, 2021, Chevrolet began taking steps to rectify any potential issues with these cars by paying off the original cost and allowing them to be taken off of the road. 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. 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. JavaScript is disabled. Choosing a higher ratio will provide more power and torque for pulling heavier loads or navigating steep grades with ease, while lower gears are better suited for those tackling long stretches of open highway or cruising around town at slower speeds. This heavy-duty nut is made with high quality materials and manufactured to exacting standards, ensuring it stands up to whatever you throw at it. Crankshaft Main Bearing Cap Bolts 70. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. This is zero backlash. When the preload of the pinion bearings is incorrectly adjusted, it can have serious consequences. If a bearing system is designed to have no clearance, then preloading is necessary. Oct 20, 2011. Rotating torque should be equal to the reading recorded during removal plus an additional 0.56 Nm (5 inch lbs.). Ring Gear Backlash Ring Gear Bolts to Cast FT. LBS. 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. The easiest way to identify the 8.2-inch rearend at a glance is by the shape of the housing and the spacing between the lower bolts on the cover. The 8.5-inch 10-bolt rearend was used in cars and trucks over a wide range of years. Use oil on the pinion nut washer surface during all assemblies . We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. The Series 3 carriers are good for use with 2.73 and lower gears (numerically higher), so 3.08 and 3.73 gears work well. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Here are the thin shims from the Summit crush sleeve eliminator. With the carrier removed w/ new bearings pinion bearing preload should measure a rolling torque of 20-30 in/lbs. I have a 1993 Suburban K1500. Used bearings 10 to 14 inch pounds. This is an 8.2 BOP axle. Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. Once the specified preload has been obtained, make sure the bearings are seated by rotating the pinion several times. GM 14 Bolt Specs (all data for SRW truck 14 Bolt axle - others may vary - see table on "different 14 bolts" below) . . The easiest way to tell the difference is by looking at the brakes. There are other 14b axles out there - a 9.5" ring gear semi-float for one, and even a 11.5 . Follow along as our employee Zach installs a GM 10 bolt rebuild kit from Motive Gear. Products include ring and pinion sets, installation kits and axle shafts for GM, Ford, Chrysler, Jeep, and Toyota vehicles. So, when adjusting preload, if it is too loose then the shims should be removed. Save Share. Follow along as we show how to measure and install a C10 one piece driveshaft. The retaining bolt can be hard enough to get out without using the red high strength Lock Tight on it. on old bearings. If the backlash is too tight, you'll need adjust the carrier shim by moving it away from the pinion. 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. I don't use it on the bearing cap bolts. 2 ways. If used in a daily driver or cruiser application, the 7.5-inch rearend should survive behind an engine with 350hp, if traction is limited during spirited driving. Is a GM 10 bolt rear end good? Crankshaft Pulley to Crankshaft bolt 77. The oval-shaped cover measures 8 5/16 inches by 10 9/16 inches. Set the preload carefully (see "Set Up Specifications") so that the bearings will have a long life. BACK LASH 0.000". These protrusions are larger than those on the 7.5 rearend. Looking for a driveshaft for your 67-72 C10? The pinion nut is a 32mm or 1 1/4" so you need a socket and adapters for that. Gear oil is nasty stuff, mostly in smell. Nut secures driveshaft yoke to pinion gear. For the fastest service, call our Differential Parts Experts at (800) 510-0950 for immediate assistance. Received 16 Likes on 13 Posts. . All 8.6-inchrears have disc brakes, and 8.5-inch units have drum brakes. Pinion bearing preload is measured in inch-pounds, and is a measure of the rolling resistance of the pinion bearings after proper torque has been applied to the pinion nut. Give us a try, we think you'll be glad you did! This is a metal spacer, usually made of brass or aluminum, that is used to put tension between the bearings in order to keep them properly spaced and aligned. 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. Alternate Description. One will want to torque the pinion nut to 190- 240 ft lbs (Small Diff's) D60 and larger 225 -350 Ft lbs with the proper preload achieved. 1989 Toyota Pickup/3vze/R150F/Dual RF1A's/8.0 Detroit/8.0 Detroit/5" SAS/38 TSL'S. 3/8" T-bolt - 30 ft lbs. See other Red Line Oil Products that we recommend. How involved is the process of changing it? With its strong construction and corrosion resistant coating, the PYN10 provides reliable performance for years to come, making it one of the best choices you can make when securing your vehicle's rear axle assembly. Tighten to 8 ft-lbs (10 N-m), then tighten an additional 1/3 turn to at least 37 ft-lbs (50 N-M). Again, this would be okay in a daily driver or cruiser application, but if installed behind an engine with horsepower numbers climbing into the 400 range, you can plan on an eventual failure. With this pinion nut, you can rest assured that your vehicle will be ready for whatever terrain comes its way! Introduction. Camshaft thrust Plate bolts 106 in-lbs. If it takes a 5/16-inch wrench to remove it, its an 8.5. MOPAR: 8.75" x 1.75" pinion: .090. . CAP TORQUE. Tightening Torque Clamp Load (lbs.) 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 . Race-spec ring and pinion gears for desert racing, rock bouncing, and rock . Ring gear bolt torque: 110 ft*lb. While the 8.5-inch rearend was used on vehicles up to 1999, The 8.6-inch (8.625) was used on 2000 and later-year trucks. A 2.6-3.0 gear ratio range is perfect for flat places and most people find this ratio suitable for their needs. Thanks Mike, Id appreciate it. Is a GM 10 bolt rear end good? 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. (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). With the pinion bearing properly lubricated, increase or decrease . (note make sure the pinion bearing is well oiled when doing this procedure.) This is done in order to decrease pre-load on the bearings; adding more shims will have an overall effect of decreasing it. 1. remove d shaft straps push shaft aside. RING GEAR TORQUE FOOR LBS. does anyone know the torque specs for a 10 bolt 7.5 for the pinion and carrier caps . This assembly featured an 8.2-inch ring gear diameter as well as 28-spline axles which provided adequate strength for these vehicles. That is theimpetus for why we decided to put this swap meet/junkyard identification guide together. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Come join the discussion about performance, lift kits, wheels, tires, modifications, troubleshooting, maintenance, and more! What size is pinion nut Silverado? The carrier bearing rides in the races and you will snap the bolt off before you warp or crack the races. PINION NUT GM 7.5 8.5. Oct 29, 2001. Gear Ratio Finder - Find the ideal axle gear ratio for your new larger or smaller tires. I used an 18" breaker bar with a 2 foot pipe on the end of it in order . Talk to the experts. ALL72156. Pinion Nut Torque Spec. 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. I got the price for the seal, and it is near $9. As an added reference, Speedway Motors also offers a great book from CarTech, titled "High-Performance Differentials, Axles & Drivelines" that helps with step by step breakdowns of the process. Once you have obtained your desired setting, it is important to apply preload while rotating the pinion in order to ensure proper engagement with its mating components. Tighten bolt to 20 ft/lbs. EDLANTA there is a "crush" spacer between the two pinion bearings that when tightened properly gives you the proper bearing preload. The only torque you should be concerned with is the torque it takes to rotate the pinion gear alone, 8-14 inch pounds for old bearings, 16-29 in/lbs. **Note the Pinion nut is in INCH pounds Ring Gear Bolts = 55 lb. That does not describe how tight the pinion nut needs to be however. What is the torque specs on pinion nut? The Fora platform includes forum software by XenForo. I then assembled the pinion, inner bearing, shim pack in the carrier then pressed on the outer bearing using a 20 t press then installed the yoke washer and nut. Vendor Part Number. The date and location of manufacture coding changed in 1971. Pinion nut torque (shimmed preload style): 250 ft*lb. 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. Loosen the right-side adjusting nut and tighten the left-side adjusting nut until the ring gear contacts the pinion without binding. 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. By asking ourselves what makes us different than other companies, our answer is that we deliver the level of customer service that other companies only promise. Step 3: Back off 3/8-turn for automatic hubs, and just enough to free the bearing for manual hubs. Unfortunately, once the tension on this type of sleeve has been released during installation it cannot be re-used since it will no longer hold the proper tension. Setup Specifications. Edit: We were lucky and had a desirable contact pattern on both the drive and coast sides of the gear teeth. Additionally, its unique thread pattern provides torque retention while eliminating any possibility of loosening or vibrating off over time due to vibration or shock loads. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Part Number. Mine was a pita. They say ignorance is bliss but I say it's just damn expensive. Just think, now when you and Drew drive out to Moab, you can sit and take a nap every other time Drew has to fuel. Follow along as Zach works over the old 10 bolt and brings it back to life. The ideal amount of torque required on a pinion nut when installing an axle depends on many factors, but typically you should aim for 110-125 ft/lbs of torque unless otherwise specified by step #6 during the installation process. IMPORTANT: The pinion preload should be at or below 4 Nm (35 inch lbs.) Replace original worn or damaged nuts each time a gear set is changed. The torque it takes to crush . This allows you to put the pinion gear in, set the pinion bearing pre-load, set the backlash and then run a contact pattern without the chance of compressing the crush sleeve too much. The distance between the lower center bolt on the cover and either adjacent bolt is 3 3/4 inches. Allstar Pinion Nut GM 7.5 8.5 ALL72156. 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. It doesn't have to be hard, and we offer some tips to keep your car's finish in top shape. This is all with the old crush sleeve. Lifted78Chevy. 10.50 PINION NUT: GM . FORD: .020. 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. We are available to help Monday thru Friday from 8 AM to 5 PM Pacific Standard Time, and most orders placed by 4 PM ship out the SAME DAY! Quaility Gears provide guaranteed performance. . Mgrotel, nice cliff notes. Back off left-side adjusting nut approximately 2 slots. When riding a bicycle, the hardest gear available is sometimes necessary for tackling steep climbs and flats alike. Typically, 10-bolt differentials are specific to a series of gears. Find out how to access AutoZone's Torque Specifications Repair Guide for 300, 300C & Magnum 2006-2008, Charger 2006-2008. Well help you determine the correct flexplate for your Chevy engine in this buyers guide. When in doubt, refer back to step #6 for more information about suggested torque specs for your particular axle installation project. When it comes to Chevrolet rearends, its the 12-bolt that seems to get all the accolades. We think top-notch customer service is the most important thing we do. There is no way to happiness.happiness is the way. The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. 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. These are considered highway gears that are good for top speed, not for off-the-line performance. TORQUE SPECIFICATIONS. First I measured the old crush sleeve as a starting point. The PYN10 is a 30 spline pinion nut designed for this purpose, and it is specifically made to be used with vehicles that have a 30 spline pinion in their 10-bolt 8.5" rear end assembly. 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. Or some do it by feel. Final torque on the pinion nut is necessary to compress the crush sleeve. We look forward to serving you! This one is not as easy as it sounds. The pinion nut should then be secured and tightened until there is no bearing play at all. OEM bolts have thread locker on the threads. 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. If i missed any thing PLEASE tell me. Rightfully so, because when comparing the 10 and 12-bolt units, its definitely the more durable of the two. He is resurrecting a G-Body Chevy Monte Carlo and decided to reuse the original 3.73 gears and a factory GM posi unit. It is internally different from the 8.2 Chevy, but has the same external bosses and brackets. You have to do it a little differently though. Carrier Cap Bolts. We pressed the new bearings onto the carrier and the front pinion bearing and went ahead and put the assembly together into the housing. The OEM pinion nut is 1 1/4 inches. While engine power is an indicator of a vehicle's ability to accelerate quickly and reach high top speeds, torque is an indication of how efficiently it can move.
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