Mine was a pita. 1989 GMC Suburban SLE 2500 4WD 5.7L Granny 4-speed. You can use this instead of the crush sleeve. These have been around since 1975, and were installedunder cars, small trucks, and vans up to the 2005 model year. 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. We started by getting a rebuilt kit from Motive Gear . TORQUE SPECIFICATIONS. Step 3: Back off 3/8-turn for automatic hubs, and just enough to free the bearing for manual hubs. There is no way to happiness.happiness is the way. Typically, 10-bolt differentials are specific to a series of gears. This gives us confidence in the quality of the parts we sell. In most cases, however, even with a straight case, a certain degree of backlash can be tolerated up to 0.005? The axle shafts are also held in place by four-bolt retainer plates at the outer bearing, not C-clips. If sticky tires are used, youll quickly turn the 7.5-inch rear into a pile of unusable parts. 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 . . The inch pound rating is the force required to turn the pinion after the crush sleeve has been crushed. 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 process helps increase longevity of both the pinion gear and its tapered bearings while also providing optimal performance from both components at all times. Not only is this a wise financial decision for both parties involved, but it also shows how much Chevrolet values customer satisfaction and safety. Find the application and ratio you need? 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. 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. .006" to .010" 120 ft-lbs. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. However, when you have new gears, a new posi unit, and other variables like mixing housings with differentials you might have to try multiple shims to get a good pattern. If a bearing system is designed to have no clearance, then preloading is necessary. grade 8. Axle Order Form; Floater Axle Order Form; Custom Driveshaft Order Form; . Learn more about GM steering column identification, GM steering column lengths, and GM steering column compatibility. The Fora platform includes forum software by XenForo. It doesn't have to be hard, and we offer some tips to keep your car's finish in top shape. 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. Currie 60/70 : Torque . Many times, if you locate a 10-bolt rearend, its usually a 7.5-inch unit. This procedure is necessary in order to ensure that everything within the drivetrain is working correctly and efficiently. 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. It refers to how much tension is applied to the spring before it's installed in the vehicle and can be adjusted accordingly. The PYN10 pinion nut has been specifically designed to fit 30 spline pinions and provide a secure fit and lasting performance. Introduction. If you are installing an axle and need to know the torque specs, it is important to first understand what torque is. It's not easy, but pushing yourself can be rewarding; after all, with hard work come great rewards! 3.08 and numerically lower gears = 1.660-inch, 3.23 and numerically higher gears = 1.950- inch, 2.73 and numerically lower gears = 1.615-inch, 3.08 and numerically higher gears = 2.00-inch, 2.56 and numerically lower gears = 1.530-inch, 2.73 and numerically higher gears = 1.720-inch. All 8.6-inchrears have disc brakes, and 8.5-inch units have drum brakes. JavaScript is disabled. Our LS swap adapter kits make it easy! Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. PINION PRELOAD NEW INCH LBS. Axle Images: Axle Details. 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. Once the specified preload has been obtained, make sure the bearings are seated by rotating the pinion several times. :yipi: Thats it?? Max Ellery's Land Cruiser Repair Manual 1969-1990 (FJ & RJ) If too tight, the bearings become overstressed and will fail prematurely, causing a catastrophic failure of both the ring and pinion gears. does anyone know the torque specs for a 10 bolt 7.5 for the pinion and carrier caps . You keep on tightening the pinion nut until you are within the in-lb. . 1988 C1500 Silverado, 5.7L with some go fast parts. 8-10 ft lbs: None: None: GM 12 Bolt Car: Torque: Lubricant: Thread Locker: Main Caps: OEM Housing: . The OEM pinion nut is 1 1/4 inches. If it takes a 1/2-inch wrench to remove it, its an 8.2. Ring and Pinion Ratio Variations - An explanation of why some ring and pinion gear ratios vary. The 8.5-inch 10-bolt rearend is hugely popular because aftermarket carriers and gears are easily interchangeable. The covers on the 8.5-inch rearends are often 11 inches round with a bulge on the drivers side to accommodate the ring gear. Automotive Chassis Torque Specs. 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. That does not describe how tight the pinion nut needs to be however. Nut secures driveshaft yoke to pinion gear. The 8.5-inch pinion diameter is 1.625 inches, whereas the 8.2-inch is smaller at 1.435 inches. 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 pinion shaft diameter is 1.625 inches and will have either 28 or 30 splines. 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. 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. and 12 bolt #s. found these #s at Richmond Gear: Torque specifications. 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. 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). It saved me time and effort trying to crush a brand new crush sleeve. Gear oil is nasty stuff, mostly in smell. 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. It said you want this to be from 5-35. We believe that our exceptional customer service and product knowledge is what sets us apart from the competition. Torque measures the amount of force that is generated when the engine rotates at a certain speed. The 8-inch rear axle looks very much like the popular Ford 9-inch rear axle. Dana 60. One is the small, 7.5-inch, another is the 8.2-inch, and yettwo more are the 8.5 and 8.6-inch. 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. Axle Retainer Plate Nuts: 3/8" T-bolts - 30 ft lbs. If in doubt, consult our staff of differential parts specialists. Recently a friend enlisted me to help rebuild his 7.5 GM 10 bolt. Ring Gear Diameter: 8.500Cover Bolts: 10Ring Gear Bolts: 10Ax . http://www.gmfullsize.com/forum/showthread.php?t=41717&highlight=pinion+seal. Or some do it by feel. 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. Backlash refers to the distance between two mating gear teeth when they are not engaged. The small torque . Peter - I'm retired but work part time as a pain in the ass. Mikz86TA. The 10-bolt GM rear end has been used in many different applications since its introduction in 1968 and continues to be highly regarded as one of the toughest axles available today due to its proven durability and versatility over decades of use in a variety of situations requiring extreme performance requirements from street racing too off roading adventures. Like the 8.2-inch 10-bolt, the 8.5 10-bolts use C-clips to retain the axles. **Note the Pinion nut is in INCH pounds Ring Gear Bolts = 55 lb. Data is accurate to the best of our knowledge and is offered as-is with no guarantee. The trick is to get it tight as possible without crushing the sleeve any more then it already is crushed. Part Number. This heavy duty nut has been designed using high grade steel and features a zinc plated finish for maximum protection against rust and corrosion. Bear Preload IN. 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. Some pinion nuts require a special procedure to be properly installed. Call 800.979.0122, 7am-10pm, everyday. 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. ExtCab96S_Dime . If your mom is lunch, then yes, I've eaten lunch twice today. Is a GM 10 Bolt rear end good? 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. Once properly secured in place, you should have no further issues with your pinion nut installation. The torque it takes to crush . 1. for a ten bolt rear it should be about 20 inch pounds while you are turning the torque wrench. It is not an uncommon sight to see a Yukon Gear Pinion Nut when it comes to automotive repairs. This is an 8.2 BOP axle. His passion for performance got him noticed by many locals, and he began helping them modify their vehicles. This sleeve must be replaced every time the pinion nut is torqued. I agree that the preload needs to be about 30 inch pounds. Order before 4PM and most parts ship out the SAME DAY. Looking for a driveshaft for your 67-72 C10? Continue tightening the pinion nut to collapse the spacer and preload the bearings. I don't use it on the bearing cap bolts. It has to be drained to get a peak inside. PINION NUT GM 7.5 8.5. Uses 28 or 30 spline c-clip axles. I like to measure the old crush sleeve and machine down a solid pinion spacer to that dimension and then . Depending on what you're using it for, there is an axle size to suit; 7.5/7.625-, 8.2-, 8.5- or 8.6-inches from smallest to largest respectively, so no matter how much horsepower you need to support, there is an option available to fit your needs perfectly and provide excellent strength and reliability even under heavy loads and high speeds. While backlash is a necessary component of manufacturing tolerances, it can be a significant source of problems for certain applications. 10.50 PINION NUT: GM . Upgrade your cam, intake, headers, stall converter, and the list goes on from there. Doing a gear ratio change but not sure what you want? Ring and Pinion Gear Tooth Patterns - Gear tooth pattern setup and adjustement instructions. Received 16 Likes on 13 Posts. Pinion Nut (Solid Spacer) 28-Spline Pinion - 200 ft lbs. 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. Ring gear bolt torque: 110 ft*lb. Replace original worn or damaged nuts each time a gear set is changed. These are two pinion gears for the 8.5-inch 10-bolt. 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 . 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. When combined with a low curb weight, this combination creates acceleration so fast it feels almost supernatural. To reach an accurate level of tension or preload, experience and expertise are usually required when dealing with this type of repair work. By Albert. 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. Finding a 12-bolt that is affordable, is getting to be anearly impossible endeavor. By following these steps carefully and precisely, you can ensure that your gear and carrier are set up correctly for optimal performance. The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. These basic steps should pertain to most GM rear differentials and if followed with leave you satisfied for many miles.