The pinion diameter is 1.438 inches, and has 25 splines. Follow along as our employee Zach installs a GM 10 bolt rebuild kit from Motive Gear. 1/2" T-bolts - 50 ft lbs. For the fastest service, call our Differential Parts Experts at (800) 510-0950 for immediate assistance. Build your own custom newsletter with the content you love from Chevy Hardcore, directly to your inbox, absolutely FREE! Axle Retainer Plate Nuts: 3/8" Grade 8 - 45 ft lbs. PINION PRELOAD NEW INCH LBS. A forum community dedicated to all General Motors truck owners and enthusiasts. 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. The 12-bolt is generally considered to be the stronger of the two rear axles. Before disassembly, we marked the bearing caps and kept the side bearing shims on the correct side. Talk to the experts. These protrusions are larger than those on the 7.5 rearend. Once the specified preload has been obtained, make sure the bearings are seated by rotating the pinion several times. That is theimpetus for why we decided to put this swap meet/junkyard identification guide together. Products include ring and pinion sets, installation kits and axle shafts for GM, Ford, Chrysler, Jeep, and Toyota vehicles. 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. 1988 C1500 Silverado, 5.7L with some go fast parts. Pinion nut has no torque spec. Ring and Pinion Gear Tooth Patterns - Gear tooth pattern setup and adjustement instructions. . CRAWLPEDIA Off-Road Encyclopedia. All rights reserved. The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. 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. I like to slowly tighten the new pinion nut until I take up all of the front to back free play. Rancho Cordova, CA 95742, Bearing Preload, Backlash and Torque Specifications. This will help ensure that there isn't an excess of tension on these components, which can lead to premature wear or even failure. It is not an uncommon sight to see a Yukon Gear Pinion Nut when it comes to automotive repairs. Copyright 2023 Sierra Gear & Axle - Web Design by Zenxeon Technologies, Backlash for Aftermarket gears .006 -.012, Instructions Differential Installation & Setup, Differential Setup & Torque Specifications, GM RPO Codes Axle & Ratio Identification, Measurement Axle Shaft Length & Bolt Circle. It saved me time and effort trying to crush a brand new crush sleeve. Part Number. Vendor Part Number. We will safeguard your e-mail and only send content you request. 6 TO 10. Differential cap bolt torque: 90 ft*lb. Crankshaft Main Bearing Cap Bolts 70. How do you fix a loose pinion bearing preload? He is resurrecting a G-Body Chevy Monte Carlo and decided to reuse the original 3.73 gears and a factory GM posi unit. Chevy Hardcore NEWSLETTER - SIGN UP FREE! I used an 18" breaker bar with a 2 foot pipe on the end of it in order . Rightfully so, because when comparing the 10 and 12-bolt units, its definitely the more durable of the two. Preload doesn't have any effect on spring stiffness; rather, its used as a way of compensating for springs that are too soft or too stiff. Im gonna go buy a good manual for shit like this. Alternatively, shims can also be used to adjust the pinion depth. ExtCab96S_Dime . 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. Skip to main content. That being said, limited gear sets are offered for the carriers, especially if you plan to change gear ratios. With its superior strength and durability, you can count on your PYN10 pinion nut to remain securely in place for years of reliable service. Unfortunately, you cannot rely on this torque because the crush sleeve provides unpredictable and non-linear resistance as it buckles and crushes. JavaScript is disabled. For the street/strip car, the 10-bolt rearend is a great choice. Not only has Chevrolet taken the initiative to buy back some of their 2017-2019 Chevy Bolt electric vehicles (EVs) due to safety recalls, but they have also gone above and beyond by reimbursing owners the full purchase price for their vehicle. 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. On the other hand, reducing the size of the pinion or increasing the size of spur gear will result in decreased top speed but with an increase in acceleration. Chrysler 300 and Dodge Charger 2006-2008 Torque Specifications Repair Guide. The side bearing preload is the difference of preloads (5) x the gear ratio (3.73) = 18.65. Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. The rotating torque must be 2 to 3 N-m (15 - 25 inch pounds). When the preload of the pinion bearings is incorrectly adjusted, it can have serious consequences. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. It should be noted that while this axle is suitable for everyday driving and light duty applications, it must be upgraded if you plan on doing any serious racing or off-road activities with your vehicle. 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. All of the parts we sell are also used every day in our busy service shop. when assembling the pinion into place, include the crush sleeve between the two pinion bearings. 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. Automotive Chassis Torque Specs. It is internally different from the 8.2 Chevy, but has the same external bosses and brackets. Therefore when dealing with these types of sleeves it's important to make sure they are installed correctly so as not to compromise its integrity or longevity. An 8.2 (shown) will have the same contour as the cover. 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. 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. Speedway also offers the Economy Ring & Pinion Setup Tool we needed. Oct 20, 2011. 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). 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. A 2.6-3.0 gear ratio range is perfect for flat places and most people find this ratio suitable for their needs. if it is under twents hold the yoke with a pipe wrench and tighten just a little at at time till the torque wrench reads a constant 20 inch pounds for the revolutions. The 8.5-inch 10-bolt rearends have ten 3/4-inch hex head bolts with 7/16-20-inch left-hand thread bolts that hold the ring gear to the carrier. I need the torque on the pinion nut for the rear differential. CAP TORQUE. With the carrier removed w/ new bearings pinion bearing preload should measure a rolling torque of 20-30 in/lbs. The Fora platform includes forum software by XenForo. http://www.gmfullsize.com/forum/showthread.php?t=41717&highlight=pinion+seal. 1. remove d shaft straps push shaft aside. Our LS swap adapter kits make it easy! 12 Bolt Rear Axle Torque Specs. 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. When working on the assembly of a differential, there are two methods for adjusting the pinion depth. GM 8.5 10 bolt - 10 bolt cover with 8.5 ring gear. This is done in order to decrease pre-load on the bearings; adding more shims will have an overall effect of decreasing it. Nov 18, 2016. The 8.5-inch 10-bolt rearend was used in cars and trucks over a wide range of years. 8-11 in/lbs for broken in bearings is acceptable. You can feel the power of all that torque in your bones as it propels the car forward even faster than before. The distance between thebottom center bolt in the cover and its adjacent bolts is 3 1/4 inches. Inch pound torque wrench that will read that low of a number which will be "VERY" costly. for a ten bolt rear it should be about 20 inch pounds while you are turning the torque wrench. Cover Bolts: 25 ft lbs. . This method works every time is done precisely as described. Gear oil is nasty stuff, mostly in smell. 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. Quaility Gears provide guaranteed performance. This assembly featured an 8.2-inch ring gear diameter as well as 28-spline axles which provided adequate strength for these vehicles. When a very slight increase in pinion turning effort is noted, check the pinion rotating torque using an inch-pound torque wrench. It is robust enough to withstand any punishment inflicted on it by racetrack use. One intimidating part for a lot of guys is the rear end. I like to measure the old crush sleeve and machine down a solid pinion spacer to that dimension and then . . 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. Tighten nut until it takes 15-20 inch lbs of torque to rotate the pinion bearings: None: Self Locking Nut . Record pinion flange rotating torque, with a torque wrench. Many mechanics use an impact gun while others insist the nut should be torqued by hand. Now that we know our pinion depth shim is correct we can do the final assembly. Race-spec ring and pinion gears for desert racing, rock bouncing, and rock . Step 2: Back off, then torque to 35 (lb-ft) for automatic hubs,or 50 (lb-ft) for manual hubs. 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. You will need to know that there are different series of differentials (seriestwo and three). If in doubt, consult our staff of differential parts specialists. Ring gear bolt torque: 110 ft*lb. This one is not as easy as it sounds. Pinion Nut Size: 1-1/4" Featured Products: GM 8.2"/8.5"/8.6" (Chevy) 10 Bolt / Aluminum Girdle Cover / TA Performance / TA_1807 . 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. Here are the thin shims from the Summit crush sleeve eliminator. Another way to tell the difference between an 8.2 and an 8.5 rearend is to pull the cover and look at the bolt holding the spider gear crosspin. The pinion nut is a 32mm or 1 1/4" so you need a socket and adapters for that. It is important to have the right pinion nut for your 8.5-inch 10-bolt rearend. This means that extra care and attention needs to be taken when installing these components so that they do not become damaged or rendered unusable. ft. You will need a torque meter in inch-lb. The small torque . 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? Differential Locker Comparison - A detailed comparison of popular differentials and lockers. It's got a 350 with a 10-bolt rear end. 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. The ideal amount of torque required on a pinion nut when installing an axle depends on many factors, but typically you should aim for 110-125 ft/lbs of torque unless otherwise specified by step #6 during the installation process. Data is accurate to the best of our knowledge and is offered as-is with no guarantee. on new bearings, or 1.2 Nm (10 inch lbs.) 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. Locate a Sierra Gear & Axle Distributor near you. Constructed from high quality steel, the PYN10 features an integral washer design that ensures proper alignment of the bearing preload during installation and prevents damage to both the yoke and bearings. You will also notice the large, flat, cast-in protrusions at thefive andseven oclock positions. You keep on tightening the pinion nut until you are within the in-lb. (note make sure the pinion bearing is well oiled when doing this procedure.) 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. for new bearings. Used bearings 10 to 14 inch pounds. 24-32 INCH pounds?? Tighten bolt to 20 ft/lbs. 440-500 lbs ft and I wouldn't tackle it bring it somewhere where they know what they are doing..I have a four foot torque wrench that goes to 500 but thats one hell of a grunt and you have to hold the flange while doing this. 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. May 22, 2021 / GM: .035. Axle Retainer Plate Nuts: 3/8" T-bolts - 30 ft lbs. FSM says 181-325 ft-lbs. In this context, "hardest gear" refers to the ratio of front sprocket teeth to rear sprocket teeth - typically expressed as 4.55:1. Recently a friend enlisted me to help rebuild his 7.5 GM 10 bolt. Oct 29, 2001. 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. range. Ring Gear Backlash Ring Gear Bolts to Cast FT. LBS. Axle Order Form; Floater Axle Order Form; Custom Driveshaft Order Form; . to do this. But, did you know there is more than one style of 10-bolt rearend? Our custom-length driveshaft kits make it a breeze to get the perfect 67-72 C10 driveshaft length. 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. 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. Unfortunately, unless you have the two units side by side, it is nearly impossible to tell them apart. 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. We are available to help Monday thru Friday from 8 AM to 5 PM Pacific Standard Time, and most orders placed by 4 PM ship out the SAME DAY! 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. 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. Like all Chevy 10-bolts, the axles are retained by C-clips on the inner end of the axle shaft inside the carrier. When it comes to Chevrolet rearends, its the 12-bolt that seems to get all the accolades. 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. It said you want this to be from 5-35. This is very important, because if you go too far the crush sleeve will be ruined. 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. . does anyone know the torque specs for a 10 bolt 7.5 for the pinion and carrier caps . Some pinion nuts require a special procedure to be properly installed. sny 00235 converted 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. Now that the hard part is done you can re install the carrier with the shims in place, torque the bearing caps and run one more contact pattern to make sure everything is good to go. A Series 2 carrierwill work with 2.56 and higher gears (numerically lower) such as 2.41. Use the blue medium strength on the retaining bolt and the red on the others. New bearings 19 to 22 inch pounds. lbs. Speedway also offers the . One is the small, 7.5-inch, another is the 8.2-inch, and yettwo more are the 8.5 and 8.6-inch. The pinion nut should then be secured and tightened until there is no bearing play at all. Ring gear bolts. See other Red Line Oil Products that we recommend. TORQUE SPECIFICATIONS. By following these steps carefully and precisely, you can ensure that your gear and carrier are set up correctly for optimal performance. If it takes a 1/2-inch wrench to remove it, its an 8.2. First mark the position of the nut with a chisel or other method so you can tighten it back to exactly the same place. 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. We were lucky and had a desirable contact pattern on both the drive and coast sides of the gear teeth. The torque it takes to crush . 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. Thick Gears and Carrier Breaks - Thick ring and pinion gears and differential carrier breaks explained. Bear Preload IN. Pinion nut torque (shimmed preload style): 250 ft*lb. Finding a 12-bolt that is affordable, is getting to be anearly impossible endeavor. increments until rotating torque is achieved. 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. 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. Yukon Gear & Axle SK CSGM8.5 Yukon Gear & Axle Crush Sleeve Eliminator Kits | Summit Racing. It first appeared in 1970 production cars as a corporate replacement for the 8.2-inch 10-bolt rearend. To ensure optimal performance in any application, it is essential to pay close attention to the amount of backlash between gears on all differentials. 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. 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. Call 800.979.0122, 7am-10pm, everyday. If rotating torque is low, tighten pinion nut in 6.8 Nm (5 ft. I have seen street 12 bolts that . It also has an inner diameter of 1 . The 8.5 rearend will have a round cover, and part of the cover will extend rearward to make room for the ring gear. FORD: .020. 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 X and F-body spring perches come in two versions: mono-leaf (left) which is shallower than the multi-leaf (right). BOP stands for Buick/Oldsmobile/Pontiac. Many times, if you locate a 10-bolt rearend, its usually a 7.5-inch unit. Dana 60. IMPORTANT: The pinion preload should be at or below 4 Nm (35 inch lbs.) If sticky tires are used, youll quickly turn the 7.5-inch rear into a pile of unusable parts.