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. This is done in order to decrease pre-load on the bearings; adding more shims will have an overall effect of decreasing it. range. 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. 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. FOR 1994-2001 CHEVY S10's & GMC SONOMA's. **ALL TORQUE SPECS ARE PER GM FACTORY & HAYNES MANUAL**. 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. Mgrotel, nice cliff notes. lbs. If you find a rearend that uses a large spring perch like this, it is from either an X or F-Body. 7/16" x all lengths 60-65 ft lb. With careful consideration, selecting an appropriate option for your driving style can make a world of difference when it comes to performance and efficiency behind the wheel. 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. 9 Minutes Read / sny 00235 converted 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 . 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. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. As a result, this construction became one of the most popular axle assemblies on the market due to its durability and affordability. Upon initial . 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 . Tighten to 8 ft-lbs (10 N-m), then tighten an additional 1/3 turn to at least 37 ft-lbs (50 N-M). ft. 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. 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. Fords small block and big block engine families have their share of flexplate differences. 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. .006" to .010" 120 ft-lbs. The axle shafts are also held in place by four-bolt retainer plates at the outer bearing, not C-clips. It is essential to ensure that the pinion flange is firmly held in place with a fixture or tool. . You will also notice the large, flat, cast-in protrusions at thefive andseven oclock positions. There were an untold number of 8.2-inch axle assemblies built, and although it is only marginally stronger than the 7.5-inch rearend, it does have some aftermarket support. Read More. 1989 GMC Suburban SLE 2500 4WD 5.7L Granny 4-speed. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. History and Identification of Chevy 10 and 12 Bolt Chevy Differentials 10.50 PINION NUT: GM . Ring gear bolts. It is therefore important to strike a balance by carefully adjusting the backlash so that it meets manufacturer requirements for that particular differential system. Find the torque thats on it before hand and tighten it down to that afterwards. On the other hand, if the preload is set too loose it can cause a whining noise to originate from within the rear end as well as abnormal gear wear due to excessive movement between the two components - eventually leading to failure. The pinion nut needs to be torqued to 250 ft/lbs. You can replace the pinion seal without changing the crush sleeve. 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. Differential Locker Comparison - A detailed comparison of popular differentials and lockers. It's not easy, but pushing yourself can be rewarding; after all, with hard work come great rewards! Thick Gears and Carrier Breaks - Thick ring and pinion gears and differential carrier breaks explained. First I measured the old crush sleeve as a starting point. Now that we know our pinion depth shim is correct we can do the final assembly. Pinion Lock Bolt Torque Specs - YouTube 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? Ring Gear Backlash Ring Gear Bolts to Cast FT. LBS. Lifted78Chevy. GM 8.5 10 bolt - 10 bolt cover with 8.5 ring gear. Differential Assembly Specifications - gounitrax.com If too tight, the bearings become overstressed and will fail prematurely, causing a catastrophic failure of both the ring and pinion gears. That way, you dont unknowingly spend money on something you really do not want. That being said, limited gear sets are offered for the carriers, especially if you plan to change gear ratios. I need the torque on the pinion nut for the rear differential. 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. Gear Ratio Calculator - Calculate the gear ratio of gears based on their tooth count. I thought the pinion nut would be more like 50-75 FOOT pounds? It's got a 350 with a 10-bolt rear end. It doesn't have to be hard, and we offer some tips to keep your car's finish in top shape. Once properly secured in place, you should have no further issues with your pinion nut installation. Products include ring and pinion sets, installation kits and axle shafts for GM, Ford, Chrysler, Jeep, and Toyota vehicles. 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. 2.2L FOUR CYLINDER ENGINE: Camshaft sprocket bolt 96. torque specs for a 7.5 10 bolt | S-10 Forum When installing a new 8.5-inch 10-bolt rear differential, it is important to use the right pinion nut for your application. To reach an accurate level of tension or preload, experience and expertise are usually required when dealing with this type of repair work. and 12 bolt #s. found these #s at Richmond Gear: Torque specifications. 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. without any detrimental effects occurring. Currie 44 : Torque: Pinion Nut (Solid Spacer) 250 ft lbs. If you locate a rearend that has coil spring perches, it could be from a G, A, B-body, or El Camino. need rear diff torque specs - Diesel Place 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. for a ten bolt rear it should be about 20 inch pounds while you are turning the torque wrench. How involved is the process of changing it? 6 TO 10. Both axles use a third member that contains the differential, which is made up of the . Torque specs | GM Truck Club Forum GM 8.5" and 8.6" Axle Parts, Gears, and Upgrades - Drivetrain Shop Over 6,000 Automotive Torque Specs. MOPAR: 8.75" x 1.75" pinion: .090. . Many times, if you locate a 10-bolt rearend, its usually a 7.5-inch unit. **Note the Pinion nut is in INCH pounds Ring Gear Bolts = 55 lb. FORD: .020. How Much Hp Can Stock 5.3 Injectors Handle, What Kind Of Gas Does A Jeep Cherokee Take, Popping Noise When Accelerating And Braking. 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. I used an 1/4" inch-lb torque wrench with two adapters and a 1 1/16" socket to check the preload. Good info on this site from what I've seen so far, kudos. 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. 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. 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. If it takes a 1/2-inch wrench to remove it, its an 8.2. 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. 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. By manipulating these two components and their ratio to each other, you can achieve different levels of performance from your vehicle that may suit your individual needs better than stock settings would. The rotational torque spec is between 15-19. BOP stands for Buick/Oldsmobile/Pontiac. What are the torque spec on pinion for a 1996 chevy k1500? - JustAnswer As well as many other third member torque specs from Strange. Rightfully so, because when comparing the 10 and 12-bolt units, its definitely the more durable of the two. 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. Rear end torque spec.s,8.2 | Team Chevelle He is resurrecting a G-Body Chevy Monte Carlo and decided to reuse the original 3.73 gears and a factory GM posi unit. Pinion seal replacement on a 10 bolt rear | GMC Truck Forum Is a GM 10 bolt rear end good? 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. I like to slowly tighten the new pinion nut until I take up all of the front to back free play. 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. First mark the position of the nut with a chisel or other method so you can tighten it back to exactly the same place. Is a GM 10 Bolt rear end good? Technical Specifications - Down To Fab 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. 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. 8-11 in/lbs for broken in bearings is acceptable. 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. We have your differential parts in stock ready to ship today. Gear oil is nasty stuff, mostly in smell. In this context, "hardest gear" refers to the ratio of front sprocket teeth to rear sprocket teeth - typically expressed as 4.55:1. PDF Rear Axle Torque Specs Chevy Silverado - annualreport.psg.fr I have seen the ring gear bolts, pinion nut and retaining bolt come loose, but never a bearing cap bolt. on old bearings. With the pinion bearing properly lubricated, increase or decrease . 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. PDF SOLID SPACER INSTALLATION TECH - East Coast Gear Supply This tension is achieved through a collapsible spacer which is placed between the bearings and then compressed by turning the pinion gear nut. Oct 29, 2001. I got the price for the seal, and it is near $9. 24-32 INCH pounds?? When in doubt, refer back to step #6 for more information about suggested torque specs for your particular axle installation project. Rebuilding the GM 10-Bolt Rear Axle - MotorTrend 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 heavy duty nut has been designed using high grade steel and features a zinc plated finish for maximum protection against rust and corrosion. Take Zach R. for instance. Skip to main content. BillaVista.com-14-Bolt Gear Setup Tech Article by BillaVista 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. Learn more about GM steering column identification, GM steering column lengths, and GM steering column compatibility. Like most 10-bolts, the axles are held in place by C-clips on the inner end of the axles. 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. Step 1: To seat, torque nut to 50 (lb-ft) while . Like all Chevy 10-bolts, the axles are retained by C-clips on the inner end of the axle shaft inside the carrier. Replace original worn or damaged nuts each time a gear set is changed. I don't use it on the bearing cap bolts. 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. Alternate Description. I used an 18" breaker bar with a 2 foot pipe on the end of it in order . Some builders . Many times when you are rebuilding an existing rear end you want to save the original pinion bearing shim and re use it under the new bearing. Would this be the same How to write up for my truck? Here are the thin shims from the Summit crush sleeve eliminator. Max Ellery's Land Cruiser Repair Manual 1969-1990 (FJ & RJ) Our stock 10-bolt was plenty stout to withstand the torture of 165 hp from the ZedSled's stock 350 (yes, that was sarcasm), but we're looking down the barrel at 500 hp from our cammed-up 6.0 swap . Save Share. Good luck finding one of these, however, as they are very popular among performance enthusiasts. TORQUE SPECIFICATIONS-1994-2001 CHEVY S10 s & GMC It also has an inner diameter of 1 . 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. . It is internally different from the 8.2 Chevy, but has the same external bosses and brackets. Thats usually proven when used in high-performance, high-horsepower applications. If rotating torque is low, tighten pinion nut in 6.8 Nm (5 ft. What is the gear ratio on a 10 bolt rear end? Usually, when people are discussing gear ratios, theyre referring to the relationship between a pinion gear and a spur gear. It has to be drained to get a peak inside. 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.
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