New bearings 19 to 22 inch pounds. If it takes a 5/16-inch wrench to remove it, its an 8.5. 8 & 9 BOLTS Locknut Size Threads per inch Steel Hex Locknut Steel Hex Flange Nut Grade C FNL Grade 9 Grade F Grade G Clamp Load (lbs.) Call 800.979.0122, 7am-10pm, everyday. IMPORTANT: The pinion preload should be at or below 4 Nm (35 inch lbs.) Is that really all it takes? tighten the nut down till its snug and put on your torque wrench and turn it about 3 revolutions. 14 bolts and 10 bolts are different, not sure about changing seals though. This method works every time is done precisely as described. This will cause the bearings to press more firmly against the races, thereby increasing preload tension. Dana 60. Ultimately, both engine power and torque play important roles in determining a cars performance capability as well as its overall efficiency. 4.replace seal. The most current parts and application information can always be found here on our website or by calling one of our differential parts experts. Maintaining your car's paint finish is essential to keep it looking great. It is robust enough to withstand any punishment inflicted on it by racetrack use. We pressed the new bearings onto the carrier and the front pinion bearing and went ahead and put the assembly together into the housing. http://www.gmfullsize.com/forum/showthread.php?t=41717&highlight=pinion+seal. From there I make very minute changes, checking the pre load with the inch lb torque wrench several times. First I measured the old crush sleeve as a starting point. 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. . First mark the position of the nut with a chisel or other method so you can tighten it back to exactly the same place. That does not describe how tight the pinion nut needs to be however. Preloading a bearing eliminates the clearance, which increases stiffness and reduces friction. All of the parts we sell are also used every day in our busy service shop. Part Number. That being said, it isnot recommended for use behind engines that make a serious amount ofhorsepower. When it comes to suspension, preload is an important factor. Just out of curiosity,what are the 8.5 (r 65lbft & c 60lbft ?) Looking for a driveshaft for your 67-72 C10? What is the gear ratio on a 10 bolt rear end? 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? With its superior strength and durability, you can count on your PYN10 pinion nut to remain securely in place for years of reliable service. Call 800.979.0122, 7am-10pm, everyday. Products include ring and pinion sets, installation kits and axle shafts for GM, Ford, Chrysler, Jeep, and Toyota vehicles. 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. 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 . A 2.6-3.0 gear ratio range is perfect for flat places and most people find this ratio suitable for their needs. See other Red Line Oil Products that we recommend. GM: .035. Sometimes, you need to push yourself. for a ten bolt rear it should be about 20 inch pounds while you are turning the torque wrench. You keep on tightening the pinion nut until you are within the in-lb. Mine was a pita. All 8.6-inchrears have disc brakes, and 8.5-inch units have drum brakes. For 30 spline pinion axles, PYN10 offers a 10-bolt 8.5" pinion nut that is designed to provide secure and reliable performance in the toughest of conditions. Good luck finding one of these, however, as they are very popular among performance enthusiasts. This heavy duty nut has been designed using high grade steel and features a zinc plated finish for maximum protection against rust and corrosion. If you are installing an axle and need to know the torque specs, it is important to first understand what torque is. The torque required to seat the nut is very large, possible 200 ft-lbs or more. The retaining bolt can be hard enough to get out without using the red high strength Lock Tight on it. Connecting Rod Cap Nuts 38. Additionally, it increases load capacity because it prevents misalignment due to vibration or thermal expansion of components. 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. If the backlash is too tight, you'll need adjust the carrier shim by moving it away from the pinion. The 12-bolt is generally considered to be the stronger of the two rear axles. I have been taking it to ~250-300 ft lbs. You can simulate pinion bearing preload by tightening the pinion nut until the proper amount of drag is felt with only motor oil on the pinion . The distance between the lower center bolt on the cover and either adjacent bolt is 3 3/4 inches. It involves placing a collapsible spacer between the bearings of the pinion gear, then using a torque wrench to tighten the pinion nut until it reaches the correct amount of pressure or preload on the bearings. On the other hand, if there is too much backlash then this will also lead to excessive mechanical wear due to increased friction and noise as the teeth continually rub against each other. For reference use at own risk. 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. Is a GM 10 bolt rear end good? 9 Minutes Read / 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. The distance between thebottom center bolt in the cover and its adjacent bolts is 3 1/4 inches. I have a leaky pinion seal and housing seal so I am planning on replacing the seals in the very near future. Alternate Description. In this context, "hardest gear" refers to the ratio of front sprocket teeth to rear sprocket teeth - typically expressed as 4.55:1. GM 10.5" 14 Bolt: 20 to 35 in-lbs. Search Car Torque Specifications by Engine or Model 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. 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. Originally, gear ratios ranged from 2.41 through 4.10. I have a 1993 Suburban K1500. Pinion preload (used bearings): 8 - 10 in*lb. If too tight, the bearings become overstressed and will fail prematurely, causing a catastrophic failure of both the ring and pinion gears. Loosen the right-side adjusting nut and tighten the left-side adjusting nut until the ring gear contacts the pinion without binding. Camshaft thrust Plate bolts 106 in-lbs. The side bearing preload is the difference of preloads (5) x the gear ratio (3.73) = 18.65. Gear oil is nasty stuff, mostly in smell. Final torque on the pinion nut is necessary to compress the crush sleeve. This ring and pinion setup guide is Copyright Crawlpedia.com - Please provide a link back to this page when copying. Determining the correct flexplate for your V8 Mopar-powered project takes a little understanding of how these engines were balanced. We show you how to keep that old GM transmission when swapping in an LS engine. Use oil on the pinion nut washer surface during all assemblies . DIFF MODEL. Free Shipping - Yukon Gear & Axle Crush Sleeve Eliminator Kits with qualifying orders of $99. 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. The 8.5 rearend will have a round cover, and part of the cover will extend rearward to make room for the ring gear. Sometimes strength is an important factor when choosing between components, and this is true with the 10-bolt and 12-bolt rearends. This high quality product ensures that your vehicle's rear axle assembly will remain securely fastened and properly aligned during operation, giving you peace of mind when driving on the roads or tracks. 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. FORD: .020. you have it pretty much. 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. Chevy Hardcore NEWSLETTER - SIGN UP FREE! Gear Ratio Calculator - Calculate the gear ratio of gears based on their tooth count. If rotating torque is low, tighten pinion nut in 6.8 Nm (5 ft. For a better experience, please enable JavaScript in your browser before proceeding. . I need the torque on the pinion nut for the rear differential. big gear head. EDLANTA there is a "crush" spacer between the two pinion bearings that when tightened properly gives you the proper bearing preload. His passion for performance got him noticed by many locals, and he began helping them modify their vehicles. It is internally different from the 8.2 Chevy, but has the same external bosses and brackets. 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. The carrier bearing rides in the races and you will snap the bolt off before you warp or crack the races. 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. When it comes to Chevrolet rearends, its the 12-bolt that seems to get all the accolades. 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. 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. Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. A full range of pinion gears is offered for the Chevy 10- and 12-bolt axle assemblies so you are able to select the correct gear set for your vehicle, application, and setup. Then use lock-tight on the threads and tighten the nut back to where it was. We believe that our exceptional customer service and product knowledge is what sets us apart from the competition. Rotating torque should be equal to the reading recorded during removal plus an additional 0.56 Nm (5 inch lbs.). 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. 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. 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. This will help ensure that there isn't an excess of tension on these components, which can lead to premature wear or even failure. That is theimpetus for why we decided to put this swap meet/junkyard identification guide together. stock 4L60E on 5th filter/fluid change; 2nd set of drive shaft u . The easiest way to tell the difference is by looking at the brakes. Inch pound torque wrench that will read that low of a number which will be "VERY" costly. This is done in order to decrease pre-load on the bearings; adding more shims will have an overall effect of decreasing it. Zone 1.5 BL, 22x12s, California delete, Detroit TrueTrac, etc. Or some do it by feel. 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. Upon initial . Tighten to 8 ft-lbs (10 N-m), then tighten an additional 1/3 turn to at least 37 ft-lbs (50 N-M). The pinion on the left is part of a 4.11:1 gear set; the one on the right is a 3.08:1 pinion. 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. Follow along as our employee Zach installs a GM 10 bolt rebuild kit from Motive Gear. For the fastest service, call our Differential Parts Experts at (800) 510-0950 for immediate assistance. Nov 18, 2016. Oct 20, 2011. GM 8.875" 12 Bolt Differential Ring Gear and Pinion Set. Save Share. To install your ring and pinion gears and/or differential correctly, it is critical to torque your bolts and set your preload and backlash correctly. 2/3 drop, HP Tuned, Built 60e, 4.10s, Yukon Duragrip, etc. .006" to .010" 120 ft-lbs. 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. Unfortunately, you cannot rely on this torque because the crush sleeve provides unpredictable and non-linear resistance as it buckles and crushes. You tighten it until the bearing preload is correct. In most cases, however, even with a straight case, a certain degree of backlash can be tolerated up to 0.005? Bearing Cap Torque (Foot Lbs.) 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. The number of teeth on each of these gears determines how much rotational force is converted into torque or speed. Torque Specs on Dana 60. 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. Dana Technical Service Specs. The Hex is 5/16 the threaded part is SAE 5/16 inch 18 threads per inch. It is not an uncommon sight to see a Yukon Gear Pinion Nut when it comes to automotive repairs. JavaScript is disabled. Setup Specifications. 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. does anyone know the torque specs for a 10 bolt 7.5 for the pinion and carrier caps . It first appeared in 1970 production cars as a corporate replacement for the 8.2-inch 10-bolt rearend. Introduction. Recently a friend enlisted me to help rebuild his 7.5 GM 10 bolt. Thanks Mike, Id appreciate it. Read More. Find the torque thats on it before hand and tighten it down to that afterwards. The 8.5-inch 10-bolt rearend was used in cars and trucks over a wide range of years. 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? 1/2" x all lengths 100-110 ft lb. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. Ring Gear Backlash Ring Gear Bolts to Cast FT. LBS. 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 . 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. 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. Locate a Sierra Gear & Axle Distributor near you. Once you give everything a thorough inspection you can begin the re-assembly process. increments until rotating torque is achieved. Follow along as we show how to measure and install a C10 one piece driveshaft. For that reason,many enthusiasts are considering the 10-bolt. Learn more about GM steering column identification, GM steering column lengths, and GM steering column compatibility. 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. 2. unbolt pinion nut. 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 . Tightening Torque Clamp Load Thats usually proven when used in high-performance, high-horsepower applications. Although the 7.5-inch 10-bolt closely resembles the 8.5-inch housing, you can positively identify the Chevy7.5-inchrearend by measuring it. Part Number. Torque is a measure of rotational force that must be applied in order to secure components such as axles and other parts together. 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. 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). Step 1: To seat, torque nut to 50 (lb-ft) while spinning hub. The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use.

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