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. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. Take Zach R. for instance. This ensures all parts remain tightly fitted together without any space between them, resulting in increased stiffness as well as reduced friction within the system as a whole. with an impact. That's all fine and dandy but my pinnion was chewing it's way through the carrier and now I can't get the passenger side c clip to drop out. 1989 GMC Suburban SLE 2500 4WD 5.7L Granny 4-speed. Shop Differential Pinion Bearing Spacers and Sleeves at Summit Racing. 2 ways. It is internally different from the 8.2 Chevy, but has the same external bosses and brackets. The following are recommended Differential Set-Up Specifications for various differentials. 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. If it takes a 5/16-inch wrench to remove it, its an 8.5. When a very slight increase in pinion turning effort is noted, check the pinion rotating torque using an inch-pound torque wrench. 2429 Mercantile Drive Suite A It has to be drained to get a peak inside. In either case, it is important that this critical adjustment be performed correctly in order to avoid costly repairs or replacements down the line. Come join the discussion about performance, lift kits, wheels, tires, modifications, troubleshooting, maintenance, and more! 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. If you find a rearend that uses a large spring perch like this, it is from either an X or F-Body. GM 8.6" gears will fit GM 8.5" axles and as such have become the universal aftermarket size for both. The correct way to do this is to use the yoke lock (part of the setup tool kit we bought) and use a breaker bar with a cheater pipe. Crawlpedia is an off-road encyclopedia featuring a complete list of proper ring and pinion gear set up torque and backlash specs. With its superior strength and durability, you can count on your PYN10 pinion nut to remain securely in place for years of reliable service. The 8-inch Ford rear axle was used from the early 1960s to 1980 in small and mid-size passenger cars with six- and small-block V-8 engines. Chrysler 300 and Dodge Charger 2006-2008 Torque Specifications Repair Guide. There are a few that have geared axles on here so they should chime in and help out with Real TECH :rocking: All 8.6-inchrears have disc brakes, and 8.5-inch units have drum brakes. When it comes to adjusting the backlash of your vehicle's pinion gear and carrier, there are a few rules of thumb to keep in mind. 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. By Albert. Ring Gear Bolt Torque (Foot lbs) (N.m.) Bearing Cap Torque (Foot lbs) (N.m.) AMC; Model 15 : 20 - 40 (2.3 - 4.5 ) . 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. 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. So, when adjusting preload, if it is too loose then the shims should be removed. 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. I like to slowly tighten the new pinion nut until I take up all of the front to back free play. 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. Thick Gears and Carrier Breaks - Thick ring and pinion gears and differential carrier breaks explained. If the backlash is too tight, you'll need adjust the carrier shim by moving it away from the pinion. This is done in order to decrease pre-load on the bearings; adding more shims will have an overall effect of decreasing it. The Fora platform includes forum software by XenForo. big gear head. An 8.2 (shown) will have the same contour as the cover. JavaScript is disabled. Cover Bolts: 25 ft lbs. Part Number. Ring gear bolt torque: 110 ft*lb. 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. This heavy duty nut has been designed using high grade steel and features a zinc plated finish for maximum protection against rust and corrosion. Follow along as Zach works over the old 10 bolt and brings it back to life. 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. 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. 2429 Mercantile Drive Suite A, Rancho Cordova, CA 95742, Copyright 2023 West Coast Differentials | Website Design by. Here's a link to when I did mine. The most current parts and application information can always be found here on our website or by calling one of our differential parts experts. A 2.6-3.0 gear ratio range is perfect for flat places and most people find this ratio suitable for their needs. We look forward to serving you! . Not sure the torque specs on the carrier bearing caps, we red lock-tight them and hit them with the impact pretty hard at work. Ford 9 inch torque specs; Gear Ratio Calculator; Order Forms. DIFF MODEL. If a bearing system is designed to have no clearance, then preloading is necessary. The concept of low-end torque is an important one for drivers to understand when it comes to the performance of a vehicle. Peter - I'm retired but work part time as a pain in the ass. If too tight, the bearings become overstressed and will fail prematurely, causing a catastrophic failure of both the ring and pinion gears. SPEC Clutches: For That Next Engine Swap Or OEM, Shop Tour: Brian Tooley Racing Expands To Be A One-Stop, Moroso Anti-Roll Kit Is The Right Tool For The, Steer Your Classic Ride Straight With A New CPP Steering, NEW LS Bellhousing For Magnum And T56-Shifted Hot, Fenix Is A Next-Gen 69 Camaro With 1,180, A Brothers Quarrel Results In This Fine 1955 Chevy, Is This Barn Find The Worlds First Corvette? The pinion shaft diameter is 1.625 inches and will have either 28 or 30 splines. You have to do it a little differently though. .006" to .010" 120 ft-lbs. Our LS swap adapter kits make it easy! Gear oil is nasty stuff, mostly in smell. 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. 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. The easiest way to tell the difference is by looking at the brakes. The specified preload needs to be obtained by carefully crushing the spacer with just enough force from turning the pinion nut in order for it not to be too loose or too tight, as either one can cause serious damage if done incorrectly. 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. Dana Technical Service Specs. Maintaining your car's paint finish is essential to keep it looking great. The side bearing preload is the difference of preloads (5) x the gear ratio (3.73) = 18.65. The number of teeth on each of these gears determines how much rotational force is converted into torque or speed. . Axle Order Form; Floater Axle Order Form; Custom Driveshaft Order Form; . 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. . For the fastest service, call our Differential Parts Experts at (800) 510-0950 for immediate assistance. Order before 4PM and most parts ship out the SAME DAY. ALL72156. Gear Ratio Calculator - Calculate the gear ratio of gears based on their tooth count. There are other 14b axles out there - a 9.5" ring gear semi-float for one, and even a 11.5 . Rightfully so, because when comparing the 10 and 12-bolt units, its definitely the more durable of the two. Vendor Part Number. The 8.5 rearend will have a round cover, and part of the cover will extend rearward to make room for the ring gear. The carrier bearing rides in the races and you will snap the bolt off before you warp or crack the races. 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. 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. Since listing them all within this article is impossible, well be focusing only on visual identification. 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. Ultimately, both engine power and torque play important roles in determining a cars performance capability as well as its overall efficiency. 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. By reducing the amount of free play between components, preloaded bearings can provide greater accuracy and quieter operation than standard ball bearings with clearances. 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. extended cab crew cab p 14 8 6 gm rear axle specifications 10 bolt cont, what are the torque specs on silverado rear diff cover you need rear axle pinion nut torque specs for a 98 chevy 12 ton pickup 2wd the nut is generally torqued to 260 300 ft lbs or 25 inch, proper torque specs for 2002 chevy silverado 1500 44 hub assembly to steering . When it comes to suspension, preload is an important factor. 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. You will need a torque meter in inch-lb. These are considered highway gears that are good for top speed, not for off-the-line performance. When I changed all the bearings in my suburban rear end, I bought the crush sleeve eliminator shims from Summit. 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. 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. The X and F-body spring perches come in two versions: mono-leaf (left) which is shallower than the multi-leaf (right). range. Tightening Torque Clamp Load Is a GM 10 bolt rear end good? Therefore, when building a performance car or truck that will be subjected to higher than normal stresses and torque loads, such as those produced by high horse power engines or increased traction created by sticky drag racing tires, it may be beneficial to choose a 12-bolt instead of a 10-bolt axle assembly in order to ensure maximum strength and reliability. I am also replacing all the bearings on my son's 97 Chevy rear end. Sometimes, pinion bearing preload can be a tricky procedure. 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. 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. Use the blue medium strength on the retaining bolt and the red on the others. Call 800.979.0122, 7am-10pm, everyday. 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. 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. It first appeared in 1970 production cars as a corporate replacement for the 8.2-inch 10-bolt rearend. on new bearings, or 1.2 Nm (10 inch lbs.) CHECK FREQUENTLY as you progressivley tighten the pinion nut. GENERAL MOTORS: APPLICATION: FT-LBS / ( N-m) AXLE SHAFT FLANGE BOLT 'S' BODY CAR: 27 (37) TRUCKS: 60 (82) AXLE SPINDLE NUT 'A' BODY: 192 (261) 'C' 'E' 'H' & 'K' BODIES : 180 (245) 'J' & 'L' BODIES . This is very important, because if you go too far the crush sleeve will be ruined.