Sie Bear Caps FT. LBS; AMC 20 If it takes a 5/16-inch wrench to remove it, its an 8.5. Speedway Motors employees enjoy not only helping our customers, but also turning some wrenches in their downtime as well. Pinion preload (new bearings): 17 - 30 in*lb. . 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. Like most 10-bolts, the axles are held in place by C-clips on the inner end of the axles. Unfortunately, you cannot rely on this torque because the crush sleeve provides unpredictable and non-linear resistance as it buckles and crushes. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. Some pinion nuts require a special procedure to be properly installed. Maintaining your car's paint finish is essential to keep it looking great. Follow along as Zach works over the old 10 bolt and brings it back to life. First introduced in 1970 as a corporate replacement for the older 8.2-inch 10-bolt or 12-bolt 8.875-inch axles, its popularity quickly spread to nearly every GM division aside from Cadillac throughout the 70s. I also like to put some oil on the seal surface of the yoke to avoid tearing the new pinion seal. Lighter and more efficient than its Ford 9-inch and Dana 60 rivals, the 12-bolt enjoys as much use amongst brand-loyal off-roaders as it . Constructed from high quality steel, the PYN10 features an integral washer design that ensures proper alignment of the bearing preload during installation and prevents damage to both the yoke and bearings. 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. Use the blue medium strength on the retaining bolt and the red on the others. By Albert. Call 800.979.0122, 7am-10pm, everyday. 1. remove d shaft straps push shaft aside. I've put a rachet strap to the axle, hit it with a hammer prayed from the inside but it won't budge enough for the c clip to clear the spider gear. If sticky tires are used, youll quickly turn the 7.5-inch rear into a pile of unusable parts. 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. Then use lock-tight on the threads and tighten the nut back to where it was. If youre building a street car and want to improve performance, we all know the drill. Furthermore, this process helps improve performance by increasing load capacity due to preventing misalignment caused by environmental factors such as vibration or thermal expansion of parts over time; additionally it also allows for smoother operation with less noise generation compared to regular ball bearings with their built-in clearances leading ultimately to higher durability rates since theres less overall wear and tear on individual components throughout long term use. Low-end torque refers to the amount of power and force generated by an engine at low revolutions per minute (RPMs), usually between 2000 and 3000. Loosen the right-side adjusting nut and tighten the left-side adjusting nut until the ring gear contacts the pinion without binding. As a result, this construction became one of the most popular axle assemblies on the market due to its durability and affordability. You Make The, SEMA 2022: GEARWRENCH Leveled Up With Distinct Quality Hand, Reignite Your Cat Eye Silverado Headlights With, SEMA 2022: Paragon Corvette Adds Performance Parts To, PRI 2022: FuelTech Talks About The Tech Of The FT700, PRI 2022: Concept Performance Now Offers Aluminum LTR, PRI 2022: Get Locked In With Forgeline Beadlock, Creative Automotion: The Art of Farmtruck &, Randy Bolig The Media Mover And Shaker Behind Chevy, How Ken Lingenfelters Love for Corvettes Benefits So, Shop Tour: Prestige Motorsports Is Your One-Stop Hot Rod, Full Factory Tour: How Edelbrock Makes Its Cast Aluminum, HOLY SHIP! sny 00235 converted At West Coast Differentials we are committed to making your experience with us totally enjoyable. 3. remove yoke from splines. 35-Spline Pinion - 250 ft lbs. This assembly featured an 8.2-inch ring gear diameter as well as 28-spline axles which provided adequate strength for these vehicles. Chrysler 300 and Dodge Charger 2006-2008 Torque Specifications Repair Guide. We started by getting a rebuilt kit from Motive Gear . Come join the discussion about performance, lift kits, wheels, tires, modifications, troubleshooting, maintenance, and more! big gear head. Sure, you know whats in there and what it does but are you willing to tear into it and rebuild the differential? Yukon Gear's Pinion Nut makes any job more efficient by ensuring your parts remain secure while providing superior protection from contaminants. 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. First mark the position of the nut with a chisel or other method so you can tighten it back to exactly the same place. Rotate the pinion when tightening the nut to seat the bearings evenly. 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. Tighten nut until it takes 15-20 inch lbs of torque to rotate the pinion bearings: None: Self Locking Nut . The carrier bearing rides in the races and you will snap the bolt off before you warp or crack the races. The pinion shaft diameter is 1.625 inches and will have either 28 or 30 splines. Torque measures the amount of force that is generated when the engine rotates at a certain speed. range. This is done in order to decrease pre-load on the bearings; adding more shims will have an overall effect of decreasing it. .006" to .010" 120 ft-lbs. Ring Gear Backlash Ring Gear Bolts to Cast FT. LBS. Good info on this site from what I've seen so far, kudos. How a GM 10-Bolt Differential Goes Bad. I will attempt to cover the necessary steps in building a differential for a GM 10 bolt rear end with an 8.5/8.6 ring gear. RING GEAR TORQUE FOOR LBS. That being said, it isnot recommended for use behind engines that make a serious amount ofhorsepower. 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. It's not easy, but pushing yourself can be rewarding; after all, with hard work come great rewards! Looking for a driveshaft for your 67-72 C10? When changing a ring & pinion and doing final install of pinion there is no torque spec on the pinion nut itself. MOPAR: 8.75" x 1.75" pinion: .090. . Axle Type Cover Bolts FT. LBS. It said you want this to be from 5-35. I have a 2004 Chevy Silverado 1500, 4.8L engine, 4x4, single cab, 6' bed, what are the torque specs for the drive shaft bolts that bolt the drive shaft into the rear end yolk? Is a GM 10 bolt rear end good? 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. 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. 4.replace seal. I like to slowly tighten the new pinion nut until I take up all of the front to back free play. The amount of backlash varies depending on the quality and cost of the gearhead; more expensive precision gearheads have nearly zero backlash, while an inexpensive model may have as much as one degree or more. As well as many other third member torque specs from Strange. DIFF MODEL. Order before 4PM and most parts ship out the SAME DAY. Rancho Cordova, CA 95742, Bearing Preload, Backlash and Torque Specifications. 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. 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. These basic steps should pertain to most GM rear differentials and if followed with leave you satisfied for many miles. The engine roars and the tires dig into the pavement as they work to move your car forward, pushing you back into your seat with tremendous force. If too tight, the bearings become overstressed and will fail prematurely, causing a catastrophic failure of both the ring and pinion gears. If rotating torque is low, tighten pinion nut in 6.8 Nm (5 ft. The 8-inch rear axle looks very much like the popular Ford 9-inch rear axle. Talk to the experts. 5 - 8 : Ring Gear Bolt Torque (Foot lbs) 120 : Bearing Cap Torque (Foot lbs) 135 : Pinion Nut Torque: Tighten as necessary to obtain correct preload: Pinion Bearing Retainer Torque (Foot lbs) :65 : . One thing often overlooked is the RTV sealant that needs to be applied to the splines (otherwise rear end grease can leak past the splines), and locktite on the new pinion nut. Tighten bolt to 20 ft/lbs. The distinction between these two types of torque can be useful for assessing how well a car will perform in different situations: cars with higher levels of low-end torque are typically better suited for starting from standstill or accelerating quickly; whereas cars with greater amounts of high-end torque are likely more suitable for reaching faster top speeds over long distances. The pinion bearing preload is an important component of the drivetrain system, as it works to ensure that the pinion gear's tapered bearings are running smoothly and efficiently. We look forward to serving you! We believe that our exceptional customer service and product knowledge is what sets us apart from the competition. you have it pretty much. Upon initial . It has to be drained to get a peak inside. PINION NUT GM 7.5 8.5. Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. Is a GM 10 Bolt rear end good? Automotive Chassis Torque Specs. Some vehicles require an 8.5" 10-bolt pinion nut to secure the rear axle assembly of their vehicle. Pinion Nut Torque Spec. Differential Locker Comparison - A detailed comparison of popular differentials and lockers. While backlash is a necessary component of manufacturing tolerances, it can be a significant source of problems for certain applications. Original gear ratios in pickups can range from 2.41:1 all the way up to 4.10:1, offering a wide variety of options depending on your needs and preferences. CAP TORQUE. 1989 GMC Suburban SLE 2500 4WD 5.7L Granny 4-speed. If you locate a rearend that has coil spring perches, it could be from a G, A, B-body, or El Camino. The Fora platform includes forum software by XenForo. Too much won't hurt anything other than break the bolt. It is therefore important to strike a balance by carefully adjusting the backlash so that it meets manufacturer requirements for that particular differential system. You will also notice the large, flat, cast-in protrusions at thefive andseven oclock positions. Not only does a torque vectoring differential perform the same basic tasks as a regular differential, but it also has an extra element that sets it apart: its ability to transfer torque between the left and right wheels independently. Uses 28 or 30 spline c-clip axles. Check the pinion preload by rotating the pinion with a torque wrench. This is in contrast to high-end torque, which describes how much power and force is produced by an engine at higher RPMs, such as 4000 or 6000. Ring Gear Diameter: 8.500Cover Bolts: 10Ring Gear Bolts: 10Ax . 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. PINION PRELOAD NEW INCH LBS. Pinion Nut FT. LBS. On the other hand, reducing the size of the pinion or increasing the size of spur gear will result in decreased top speed but with an increase in acceleration. :yipi: Thats it?? Mine is leaking. Setup Specifications. 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. If your just swapping the pinion yoke out or putting in a new pinion seal and your re-using the old crush collar, just tighten the nut back down till ALL the slop is gone and then tighten about a 1/4 turn more to make sure there is tension on the old crush collar. Next, attach the pinion nut onto the end of the shaft and use a torque wrench to tighten it to between 110-125 ft/lbs of torque. grade 8. Like the 8.2-inch 10-bolt, the 8.5 10-bolts use C-clips to retain the axles. 1989 Toyota Pickup/3vze/R150F/Dual RF1A's/8.0 Detroit/8.0 Detroit/5" SAS/38 TSL'S. ExtCab96S_Dime . The pinion diameter is 1.438 inches, and has 25 splines. You can feel the power of all that torque in your bones as it propels the car forward even faster than before. 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. 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. I have seen street 12 bolts that . Shop for New Auto Parts at 1AAuto.com http://1aau.to/c/553/e/driveshaftThe differential Pinion Flange is part of the universal joint that connects the drive . Tightening Torque Clamp Load (lbs.) The 7.5 rearend uses an oval cover and the housing has two small cast-in protrusions near two of the bottom cover bolts. Tightening Torque Clamp Load 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. checking the pre load with the inch lb torque . A 2.6-3.0 gear ratio range is perfect for flat places and most people find this ratio suitable for their needs. Well help you determine the correct flexplate for your Chevy engine in this buyers guide. GM 8.6" gears will fit GM 8.5" axles and as such have become the universal aftermarket size for both. Ford 9 inch torque specs; Gear Ratio Calculator; Order Forms. Before disassembly, we marked the bearing caps and kept the side bearing shims on the correct side. You will need a torque meter in inch-lb. 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. This strength comes from its larger pinion shaft diameter which measures 1.625 inches with 30 splines, 13 percent larger than the 1.438 inch diameter and 25 spline pinion shaft found on a 10-bolt axle. The following table contains the proper specifications for all popular axles. . If i missed any thing PLEASE tell me. We show you how to keep that old GM transmission when swapping in an LS engine. 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. Gear Ratio Calculator - Calculate the gear ratio of gears based on their tooth count. The concept of low-end torque is an important one for drivers to understand when it comes to the performance of a vehicle. If in doubt, consult our staff of differential parts specialists. FOR 1994-2001 CHEVY S10's & GMC SONOMA's. **ALL TORQUE SPECS ARE PER GM FACTORY & HAYNES MANUAL**. It also has an inner diameter of 1 . 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. Not only has Chevrolet taken the initiative to buy back some of their 2017-2019 Chevy Bolt electric vehicles (EVs) due to safety recalls, but they have also gone above and beyond by reimbursing owners the full purchase price for their vehicle. 8-11 in/lbs for broken in bearings is acceptable. It doesn't have to be hard, and we offer some tips to keep your car's finish in top shape. ring gear bolts torque at 175lb/ft, bearing cap bolts torque at 200lb/ft, and the ring gear backlash should be between .006-.010 for aftermarket gears, .005-.007 for OEM gears. While a carrier-bearing girdle is available for the 8.2-inch rearend and does give some support to the housing it doesnt provide a reliable and suitably strong solution. 14 TO 19. It is important to keep in mind that this can change dramatically based on specific materials used or other variables so it is critical to be sure to consult any instruction manual included with your differential cover before attempting any installation. This means that extra care and attention needs to be taken when installing these components so that they do not become damaged or rendered unusable. It was in the 30-35 I "think" from GM. The distance between thebottom center bolt in the cover and its adjacent bolts is 3 1/4 inches. Install left-side adjusting nut lock, washer, and bolt. 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. The closer the teeth count is between the two gears, the higher the speed output will be; conversely, if there is a greater difference in tooth count, then more torque will be generated. Furthermore, its thread size of 1 7/16"-20 makes it compatible with nearly all GM style rear ends from 1955 to present day models. It is important to have the right pinion nut for your 8.5-inch 10-bolt rearend. ALL72156. . Oct 20, 2011. It refers to how much tension is applied to the spring before it's installed in the vehicle and can be adjusted accordingly. Introduction. 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. 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. We have your differential parts in stock ready to ship today. The number of teeth on each of these gears determines how much rotational force is converted into torque or speed. Sometimes, you need to push yourself. Then after getting the proper gear patterns you put the new crush sleeve and seal in place and tighten the pinion nut to force the crush sleeve. The first is to use a crush collar; this involves applying pressure between the yoke and cup until it reaches the desired depth. Finding a 12-bolt that is affordable, is getting to be anearly impossible endeavor. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. JavaScript is disabled. I don't use it on the bearing cap bolts. BACK LASH 0.000". Vendor Part Number. Race-spec ring and pinion gears for desert racing, rock bouncing, and rock . 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. and 12 bolt #s. found these #s at Richmond Gear: Torque specifications. By continuing to use our website, you agree to our Privacy Policy. Next remove the nut and change the seal. Skip to main content. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Both axles use a third member that contains the differential, which is made up of the . 2 ways. Crankshaft Main Bearing Cap Bolts 70. It saved me time and effort trying to crush a brand new crush sleeve. You can use this instead of the crush sleeve. Cover Bolts: 25 ft lbs. Either way, the nut should be tightened to produce 24-32-in-lb of torque to turn the pinion . 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. Carrier Cap Bolts. Lifted78Chevy. You can replace the pinion seal without changing the crush sleeve. Ring gear bolts 65 foot pounds, bearing cap bolts 60 foot pounds. Step 1: To seat, torque nut to 50 (lb-ft) while . New bearings 19 to 22 inch pounds. It also uses a 10 5/8-inch irregular-shaped cover. When it comes to Chevrolet rearends, its the 12-bolt that seems to get all the accolades. CHECK FREQUENTLY as you progressivley tighten the pinion nut. Find the torque thats on it before hand and tighten it down to that afterwards. 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. Like all Chevy 10-bolts, the axles are retained by C-clips on the inner end of the axle shaft inside the carrier. Pinion Nut (Solid Spacer) 28-Spline Pinion - 200 ft lbs. What size is pinion nut Silverado? Come join the discussion about Silverados, Sierras, and other full size trucks performance, modifications, suspension, lift kits, tires, maintenance, and more! 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). These have been around since 1975, and were installedunder cars, small trucks, and vans up to the 2005 model year. The pinion nut needs to be torqued to 250 ft/lbs. If a bearing system is designed to have no clearance, then preloading is necessary. With the pinion bearing properly lubricated, increase or decrease . So, in order to adjust the pinion bearing pre-load, shims of varying thicknesses are inserted into pre-load retainers. It's got a 350 with a 10-bolt rear end. The OEM pinion nut is 1 1/4 inches. Here's a link to when I did mine. . Not only will you be getting the best quality performance with JEGS Pinion Nut, but you'll also have the convenience of knowing it's made to fit GM 8.875 inch 12-bolt car and truck axles. When compressing the crush sleeve, many guys use an impact wrench and end up crushing it too far, ruining the sleeve. The purpose of preloading a bearing is to eliminate any existing clearance that has been designed into standard ball bearings by utilizing tension or compression loads applied directly onto each component within the assembly. 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. The rotational torque spec is between 15-19. Torque is a measure of rotational force that must be applied in order to secure components such as axles and other parts together. Bearing Cap Torque (Foot Lbs.) 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. Chevy Hardcore NEWSLETTER - SIGN UP FREE! The axle shafts are also held in place by four-bolt retainer plates at the outer bearing, not C-clips. It is robust enough to withstand any punishment inflicted on it by racetrack use. Is that really all it takes? Read More. 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 process helps increase longevity of both the pinion gear and its tapered bearings while also providing optimal performance from both components at all times. The "feel" people are way more experienced that you or I so the top one is re-commended. A forum community dedicated to all General Motors truck owners and enthusiasts. 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. Inside, the ring-gear bolts are the same as the 8.5 corporate unit, but the pinion-shaft diameter measures 1.438 inches. I have a 2001 2500 HD. Ring Gear Bolt Torque (Foot lbs) (N.m.) Bearing Cap Torque (Foot lbs) (N.m.) AMC; Model 15 : 20 - 40 (2.3 - 4.5 ) . Save Share. GM: .035. This sleeve must be replaced every time the pinion nut is torqued. 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. Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. Edit: The 8.5-inch and 8.6-inch 10-bolt rears are stout and effective differentials that can handle more power than either the 7.5 or 8.2-inch rears. The reliability of the axle tube and . Ring gear bolt torque: 110 ft*lb. Pinion preload (used bearings): 8 - 10 in*lb. This is also likely to reduce run times due to lower temperatures as theres less load being put on your vehicles engine when compared to running with a bigger pinion and smaller spur gear combination. This is an 8.2 BOP axle. 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! It is essential to ensure that the pinion flange is firmly held in place with a fixture or tool. With one nut per package and a 7/8-16 thread size, this pinion nut is made from strong steel and has a sleek black finish for a nice look. Record pinion flange rotating torque, with a torque wrench. 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. For over a decade, the 8.5-inch 10-bolt was widely used as an axle in many cars and trucks produced by General Motors. It has a black oxide finish that ensures corrosion resistance while its construction of hardened steel ensures durability even under extreme conditions. with an impact. Order our high performance synthetic oil and friction additive combo kit at time of order for ring and pinion or bearing overhaul kit and pay only $49.95 plus S&H, a $54.00 value. This will ensure that your backlash is correct without having to swap the shims.