pinion nut torque specs gm 10 bolt

. The pinion shaft diameter is 1.625 inches and will have either 28 or 30 splines. You tighten it until the bearing preload is correct. This is especially true when it comes to cycling. GM 8.875" 12 Bolt Differential Ring Gear and Pinion Set. Finding a 12-bolt that is affordable, is getting to be anearly impossible endeavor. I used an 1/4" inch-lb torque wrench with two adapters and a 1 1/16" socket to check the preload. Speedway Motors employees enjoy not only helping our customers, but also turning some wrenches in their downtime as well. Some pinion nuts require a special procedure to be properly installed. 1/2" x all lengths 100-110 ft lb. . 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. Talk to the experts. Tighten to 8 ft-lbs (10 N-m), then tighten an additional 1/3 turn to at least 37 ft-lbs (50 N-M). Many times, if you locate a 10-bolt rearend, its usually a 7.5-inch unit. 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 . 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. 2 ways. GM 8.6" gears will fit GM 8.5" axles and as such have become the universal aftermarket size for both. 2. unbolt pinion nut. for a ten bolt rear it should be about 20 inch pounds while you are turning the torque wrench. 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. Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. 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. Mine is leaking. How to eliminate unwanted to holes in your car's body, trunk, floor, or firewall with easy to use patch plugs from Speedway Motors. Too much won't hurt anything other than break the bolt. CRAWLPEDIA Off-Road Encyclopedia. Its strength and reliability have been proven time again, making it an excellent option for drivers looking for reliable performance from their vehicle. 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. Come join the discussion about performance, lift kits, wheels, tires, modifications, troubleshooting, maintenance, and more! If you find a rearend that uses a large spring perch like this, it is from either an X or F-Body. First mark the position of the nut with a chisel or other method so you can tighten it back to exactly the same place. 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. It is internally different from the 8.2 Chevy, but has the same external bosses and brackets. Here's a link to when I did mine. . 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. 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. 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. 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. 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. 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. range. when assembling the pinion into place, include the crush sleeve between the two pinion bearings. Over 6,000 Automotive Torque Specs. Thats usually proven when used in high-performance, high-horsepower applications. The following are recommended Differential Set-Up Specifications for various differentials. with an impact. Introduction. You will need a torque meter in inch-lb. Call 800.979.0122, 7am-10pm, everyday. Pinion Bearing Preload (New) (inch/lbs) Pinion Bearing Preload (Used) (inch/lbs) Backlash (.001 in) Ring Gear Bolt Torque (Foot lbs.) Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. I agree that the preload needs to be about 30 inch pounds. 8-10 ft lbs: None: None: GM 12 Bolt Car: Torque: Lubricant: Thread Locker: Main Caps: OEM Housing: . Yukon Gear's Pinion Nut makes any job more efficient by ensuring your parts remain secure while providing superior protection from contaminants. The pinion diameter is 1.438 inches, and has 25 splines. To reach an accurate level of tension or preload, experience and expertise are usually required when dealing with this type of repair work. 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. 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. 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. Carrier Cap Bolts. If you locate a rearend that has coil spring perches, it could be from a G, A, B-body, or El Camino. This ring and pinion install kit comes with new pinion bearings, carrier bearings, races, crush sleeve, pinion nut, pinion seal, a gasket and even has the gear marking grease included. 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. Find the torque thats on it before hand and tighten it down to that afterwards. . 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. Received 16 Likes on 13 Posts. Backlash = 6-10 (.001 inch) 2003 S-10 ZQ8 - 262/M5:bowtie: 1986 Pontiac Trans Am - 355/A4 When it comes to suspension, preload is an important factor. The pinion nut needs to be torqued to 250 ft/lbs. If too tight, the bearings become overstressed and will fail prematurely, causing a catastrophic failure of both the ring and pinion gears. 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. 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. 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. While this article focuses specifically on the GM 8.5 10-bolt rear differential, the parts and processes described herein cover most differential housings.Built from the 1970s through today (the 8.6" 10-bolt is still used in most GM . 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. It also has an inner diameter of 1 . Doing a gear ratio change but not sure what you want? It said you want this to be from 5-35. FSM says 181-325 ft-lbs. This versatility makes it a great choice for those who want to take their car from the street to the track without worrying about its durability. Our LS swap adapter kits make it easy! Speedway also offers the . 7/16" x all lengths 60-65 ft lb. Alternatively, shims can also be used to adjust the pinion depth. http://www.gmfullsize.com/forum/showthread.php?t=41717&highlight=pinion+seal. Or some do it by feel. I have a 2001 2500 HD. 2023 Power Automedia. . 9 Minutes Read / Race-spec ring and pinion gears for desert racing, rock bouncing, and rock . 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. In most cases, however, even with a straight case, a certain degree of backlash can be tolerated up to 0.005? This tension is achieved through a collapsible spacer which is placed between the bearings and then compressed by turning the pinion gear nut. This heavy duty nut has been designed using high grade steel and features a zinc plated finish for maximum protection against rust and corrosion. Try our Differential Gear Calculator. 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. It has a black oxide finish that ensures corrosion resistance while its construction of hardened steel ensures durability even under extreme conditions. 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. PINION PRELOAD NEW INCH LBS. They say ignorance is bliss but I say it's just damn expensive. **Note the Pinion nut is in INCH pounds Ring Gear Bolts = 55 lb. 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. GM 14 Bolt Specs (all data for SRW truck 14 Bolt axle - others may vary - see table on "different 14 bolts" below) . By following these steps carefully and precisely, you can ensure that your gear and carrier are set up correctly for optimal performance. Record pinion flange rotating torque, with a torque wrench. It is robust enough to withstand any punishment inflicted on it by racetrack use. If rotating torque is low, tighten pinion nut in 6.8 Nm (5 ft. The trick is to get it tight as possible without crushing the sleeve any more then it already is crushed. Cover Bolts: 25 ft lbs. I like to measure the old crush sleeve and machine down a solid pinion spacer to that dimension and then . Here are the thin shims from the Summit crush sleeve eliminator. If it takes a 5/16-inch wrench to remove it, its an 8.5. Randy Bolig has been working on cars and has been involved in the hobby ever since he bought his first car when he was only 14 years old. Some builders . 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. 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. Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. . for new bearings. 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. Thanks Mike, Id appreciate it. 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. If youre building a street car and want to improve performance, we all know the drill. A forum community dedicated to all General Motors truck owners and enthusiasts. 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. 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. 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. This website uses cookies or similar technologies to enhance your browsing experience. 1988 C1500 Silverado, 5.7L with some go fast parts. Nut secures driveshaft yoke to pinion gear. To ensure optimal performance in any application, it is essential to pay close attention to the amount of backlash between gears on all differentials. 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. Back off left-side adjusting nut approximately 2 slots. From there I make very minute changes, checking the pre load with the inch lb torque wrench several times. 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. Bear Preload IN. The lower end of this range will give you a cadence of 90 rpm which translates to an average speed of 30 km/h while the upper end will get you going up to 34 km/h. Our Mopar flexplate buyers guide will help. 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 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. 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. Not only is it important to keep the backlash variation under 0.005?, but in an ideal world, no variation should be present at all. 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. MOPAR: 8.75" x 1.75" pinion: .090. . Gear oil is nasty stuff, mostly in smell. We talked to a few of our in-house race experts about ways to make this racing season your best one yet! 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.