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Sure, you know whats in there and what it does but are you willing to tear into it and rebuild the differential? The distance between thebottom center bolt in the cover and its adjacent bolts is 3 1/4 inches. Currie 44 : Torque: Pinion Nut (Solid Spacer) 250 ft lbs. It also has an inner diameter of 1 . GM 8.6" gears will fit GM 8.5" axles and as such have become the universal aftermarket size for both. If a bearing system is designed to have no clearance, then preloading is necessary. The inch pound rating is the force required to turn the pinion after the crush sleeve has been crushed. 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 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 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. Thats usually proven when used in high-performance, high-horsepower applications. By reducing the amount of free play between components, preloaded bearings can provide greater accuracy and quieter operation than standard ball bearings with clearances. To begin, the yoke or coupler must be attached to the pinion shaft. 1989 Toyota Pickup/3vze/R150F/Dual RF1A's/8.0 Detroit/8.0 Detroit/5" SAS/38 TSL'S. The pinion nut should then be secured and tightened until there is no bearing play at all. It is well known that altering the gear ratio of a vehicle, whether it be through changing the pinion or spur gear, can have a significant effect on performance. You can feel the power of all that torque in your bones as it propels the car forward even faster than before. You will also notice the large, flat, cast-in protrusions at thefive andseven oclock positions. 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. 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). 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 . Check the pinion preload by rotating the pinion with a torque wrench. When riding a bicycle, the hardest gear available is sometimes necessary for tackling steep climbs and flats alike. Received 16 Likes on 13 Posts. Our custom-length driveshaft kits make it a breeze to get the perfect 67-72 C10 driveshaft length. 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. This website uses cookies or similar technologies to enhance your browsing experience. Good info on this site from what I've seen so far, kudos. 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. When the preload of the pinion bearings is incorrectly adjusted, it can have serious consequences. The rear end is full of it. 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. This one is not as easy as it sounds. Torque is a measure of rotational force that must be applied in order to secure components such as axles and other parts together. Zone 1.5 BL, 22x12s, California delete, Detroit TrueTrac, etc. Ultimately, both engine power and torque play important roles in determining a cars performance capability as well as its overall efficiency. 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. First introduced in 1970 as a corporate replacement for the older 8.2-inch 10-bolt or 12-bolt 8.875-inch axles, its popularity quickly spread to nearly every GM division aside from Cadillac throughout the 70s. It was used in different models by all GM divisions with the exception of Cadillac. Axle Type Cover Bolts FT. LBS. It is estimated that this specific axle saw use on over 11 million vehicles during its reign of production making it one of the most popular axles ever created by GM for their consumer market line up. The Fora platform includes forum software by XenForo. There is no way to happiness.happiness is the way. Cover Bolts: 25 ft lbs. Use Loctite #271 on the bolt threads and torque in a crisscross fashion to 55 ft-lb. 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. 2.2L FOUR CYLINDER ENGINE: Camshaft sprocket bolt 96. This should result in approximately 7 thousandths of an inch adjustment in terms of backlash. GM 8.875" 12 Bolt Differential Ring Gear and Pinion Set. Known alternatively as the GM 8.875-inch (referring to its ring gear diameter), Chevrolet's 12-bolt rear end is one of the most celebrated in the American hot-rodding scene. Speedway also offers the Economy Ring & Pinion Setup Tool we needed. BOP stands for Buick/Oldsmobile/Pontiac. stock 4L60E on 5th filter/fluid change; 2nd set of drive shaft u . We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. Doing a gear ratio change but not sure what you want? Vendor Part Number. Pinion nut has no torque spec. LBS. At West Coast Differentials we are committed to making your experience with us totally enjoyable. Now that we know our pinion depth shim is correct we can do the final assembly. These protrusions are larger than those on the 7.5 rearend. The Fora platform includes forum software by XenForo. PINION PRELOAD NEW INCH LBS. As well as many other third member torque specs from Strange. This method works every time is done precisely as described. . 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. I got the price for the seal, and it is near $9. Finding a 12-bolt that is affordable, is getting to be anearly impossible endeavor. 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. Sometimes when repairing or replacing components within a transmission, you may encounter a crush sleeve. 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. GM 14 Bolt Specs (all data for SRW truck 14 Bolt axle - others may vary - see table on "different 14 bolts" below) . Its strength and reliability have been proven time again, making it an excellent option for drivers looking for reliable performance from their vehicle. 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. The side bearing preload is the difference of preloads (5) x the gear ratio (3.73) = 18.65. 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. If i missed any thing PLEASE tell me. 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. Dana Technical Service Specs. FSM says 181-325 ft-lbs. From there I make very minute changes, checking the pre load with the inch lb torque wrench several times. Follow along as our employee Zach installs a GM 10 bolt rebuild kit from Motive Gear. If you installed a new seal, add 1 or 2 in-oz. The number of teeth on each of these gears determines how much rotational force is converted into torque or speed. I used an 18" breaker bar with a 2 foot pipe on the end of it in order . If the nut is loose then the crush sleeve must be changed. ALL72156. in order to compensate for the drag of the new seal, the nut should be tightened more until the rotational torque of the pinion slightly exceeds what was recorded earlier, but not by more that 5 in/lbs. We have your differential parts in stock ready to ship today. Max Ellery's Land Cruiser Repair Manual 1969-1990 (FJ & RJ) This is especially true when it comes to cycling. If sticky tires are used, youll quickly turn the 7.5-inch rear into a pile of unusable parts. An 8.2 (shown) will have the same contour as the cover. 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. Lighter and more efficient than its Ford 9-inch and Dana 60 rivals, the 12-bolt enjoys as much use amongst brand-loyal off-roaders as it . Learn more about GM steering column identification, GM steering column lengths, and GM steering column compatibility. The 8.5-inch 10-bolt rearend was used in cars and trucks over a wide range of years. He is resurrecting a G-Body Chevy Monte Carlo and decided to reuse the original 3.73 gears and a factory GM posi unit. See other Red Line Oil Products that we recommend. This will cause the bearings to press more firmly against the races, thereby increasing preload tension. Recently a friend enlisted me to help rebuild his 7.5 GM 10 bolt. :yipi: Thats it?? Crankshaft Pulley to Crankshaft bolt 77. Sierra Gear & Axle is a premium line of light-duty differential parts. Pinion Nut Torque Spec. 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. The reason why it's so hard to turn the pinion nut is because not only are you crushing the crush collar but you're also pressing the outer pinion bearing onto the pinion gear. Ring and Pinion Gear Tooth Patterns - Gear tooth pattern setup and adjustement instructions. Here's a link to when I did mine. West Coast Differentials stocks a complete line of light duty axle parts for Chevrolet, Chrysler, Dana, Ford, GM, Jeep and Toyota and more! Mgrotel, nice cliff notes. Find the torque thats on it before hand and tighten it down to that afterwards. http://www.gmfullsize.com/forum/showthread.php?t=41717&highlight=pinion+seal. Nov 18, 2016. Differential Locker Comparison - A detailed comparison of popular differentials and lockers. Rightfully so, because when comparing the 10 and 12-bolt units, its definitely the more durable of the two. Pinion bearing preload is measured in inch-pounds, and is a measure of the rolling resistance of the pinion bearings after proper torque has been applied to the pinion nut. Locate a Sierra Gear & Axle Distributor near you. High-Performance Differentials, Axles & Drivelines, How to Measure and ID Differetial Housings, Filling Trim Holes in Car Body: Sheet Metal Welding Tips, Q&A With Our Race Experts: Tuning and Maintenance Tips, Small Block and Big Block Chevy Engine Flexplate Guide, How to Adapt LS Engine to 700R4 or Turbo 350 Transmissions, Chevy C10 Driveshaft Length Measuring Guide, GM Steering Column Compatibility, Interchange & Repair Guide. It is not an uncommon sight to see a Yukon Gear Pinion Nut when it comes to automotive repairs. This axle was found in various vehicles from Chevrolets and Pontiacs to Oldsmobiles and Buicks with some of these models continuing production well into the early 80's. If it takes a 1/2-inch wrench to remove it, its an 8.2. 3/8" T-bolt - 30 ft lbs. You have to do it a little differently though. 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. This is very important, because if you go too far the crush sleeve will be ruined. 1/2" T-bolts - 50 ft lbs. you have it pretty much. You Make The, SEMA 2022: GEARWRENCH Leveled Up With Distinct Quality Hand, Reignite Your Cat Eye Silverado Headlights With, SEMA 2022: Paragon Corvette Adds Performance Parts To, PRI 2022: FuelTech Talks About The Tech Of The FT700, PRI 2022: Concept Performance Now Offers Aluminum LTR, PRI 2022: Get Locked In With Forgeline Beadlock, Creative Automotion: The Art of Farmtruck &, Randy Bolig The Media Mover And Shaker Behind Chevy, How Ken Lingenfelters Love for Corvettes Benefits So, Shop Tour: Prestige Motorsports Is Your One-Stop Hot Rod, Full Factory Tour: How Edelbrock Makes Its Cast Aluminum, HOLY SHIP! . If you're looking to get the most out of your pickup truck, you may want to consider changing the gear ratios. 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. CHECK FREQUENTLY as you progressivley tighten the pinion nut. The 8.5-inch and 8.6-inch 10-bolt rears are stout and effective differentials that can handle more power than either the 7.5 or 8.2-inch rears. This assembly featured an 8.2-inch ring gear diameter as well as 28-spline axles which provided adequate strength for these vehicles. Data is accurate to the best of our knowledge and is offered as-is with no guarantee. The Series 3 carriers are good for use with 2.73 and lower gears (numerically higher), so 3.08 and 3.73 gears work well. GM 10 Bolt 8.2; GM 10 Bolt 8.5; GM 12 Bolt 8.875; GM 8.6 IRS; GM Install Kits; MOPAR. 2 ways. This heavy duty nut has been designed using high grade steel and features a zinc plated finish for maximum protection against rust and corrosion. Upon initial . 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. When combined with a low curb weight, this combination creates acceleration so fast it feels almost supernatural. This will ensure that your backlash is correct without having to swap the shims. The torque required to seat the nut is very large, possible 200 ft-lbs or more. Mikz86TA. Tightening Torque Clamp Load (lbs.) 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. Usually, when people are discussing gear ratios, theyre referring to the relationship between a pinion gear and a spur gear. If you're just starting out your adventure with single speed or fixed gear bikes then it's best to opt for ratios around 2.7-2.8 as they are easier on your legs and can help build up strength gradually as you continue cycling further and faster each time. Yukon Gear's Pinion Nut makes any job more efficient by ensuring your parts remain secure while providing superior protection from contaminants. For a better experience, please enable JavaScript in your browser before proceeding. 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. . The pinion nut is a 32mm or 1 1/4" so you need a socket and adapters for that. It's not easy, but pushing yourself can be rewarding; after all, with hard work come great rewards! Is a GM 10 bolt rear end good? Reply Quote. Good luck finding one of these, however, as they are very popular among performance enthusiasts. First mark the position of the nut with a chisel or other method so you can tighten it back to exactly the same place. His passion for performance got him noticed by many locals, and he began helping them modify their vehicles. Shop for New Auto Parts at 1AAuto.com http://1aau.to/c/553/e/driveshaftThe differential Pinion Flange is part of the universal joint that connects the drive . Preload plays an important role in many machine designs for its ability to reduce wear and tear on critical components while improving efficiency and accuracy. JavaScript is disabled. Race-spec ring and pinion gears for desert racing, rock bouncing, and rock . 9 Minutes Read / The first is to use a crush collar; this involves applying pressure between the yoke and cup until it reaches the desired depth. 1. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. . Camshaft thrust Plate bolts 106 in-lbs. This difference can cause issues with accuracy and repeatability in some applications, necessitating either higher-end components or additional compensation mechanisms. 3/8" x all lengths 45-50 ft lb. There are several differentials for the 10-bolt rearend. We show you how to keep that old GM transmission when swapping in an LS engine. The X and F-body spring perches come in two versions: mono-leaf (left) which is shallower than the multi-leaf (right). 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 . The PYN10 pinion nut has been specifically designed to fit 30 spline pinions and provide a secure fit and lasting performance. Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. For a better experience, please enable JavaScript in your browser before proceeding. Once properly secured in place, you should have no further issues with your pinion nut installation. Once you give everything a thorough inspection you can begin the re-assembly process. Chrysler 300 and Dodge Charger 2006-2008 Torque Specifications Repair Guide. and 12 bolt #s. found these #s at Richmond Gear: Torque specifications. Give us a try, we think you'll be glad you did! Since listing them all within this article is impossible, well be focusing only on visual identification. (note make sure the pinion bearing is well oiled when doing this procedure.) To reach an accurate level of tension or preload, experience and expertise are usually required when dealing with this type of repair work. The rotational torque spec is between 15-19. 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. 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. 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. Assemblers must decide for themselves how much leeway they are willing to allow in this area and assess whether the potential results would warrant such leniency. FOR 1994-2001 CHEVY S10's & GMC SONOMA's. **ALL TORQUE SPECS ARE PER GM FACTORY & HAYNES MANUAL**. 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. havent done it, but i have the haynes repair manual and ill type out the steps for you, may take me a second though. The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. 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. (Note: The 7.5 GM rear used different pinion bearings in 1979-80 vs. the 81-up axles, so you want to make sure that the old bearings match up to your new pinion bearings). Either way, the nut should be tightened to produce 24-32-in-lb of torque to turn the pinion . 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. The easiest way to tell the difference is by looking at the brakes. 3. remove yoke from splines. Ring Gear Bolt Torque (Foot lbs) (N.m.) Bearing Cap Torque (Foot lbs) (N.m.) AMC; Model 15 : 20 - 40 (2.3 - 4.5 ) . Bear Preload IN. Like most 10-bolts, the axles are held in place by C-clips on the inner end of the axles. 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. You can use this instead of the crush sleeve. 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. 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. This gives us confidence in the quality of the parts we sell. 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. 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. 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. Preloading a bearing eliminates the clearance, which increases stiffness and reduces friction. Is a GM 10 bolt rear end good? If the backlash is too tight, you'll need adjust the carrier shim by moving it away from the pinion. The most current parts and application information can always be found here on our website or by calling one of our differential parts experts. 10.50 PINION NUT: GM . 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. These are two pinion gears for the 8.5-inch 10-bolt. 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. The more torque produced, the less energy needed to move the car forward. This ring and pinion setup guide is Copyright Crawlpedia.com - Please provide a link back to this page when copying. 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. If you find a rearend that uses a large spring perch like this, it is from either an X or F-Body. 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. I have been taking it to ~250-300 ft lbs. I like to measure the old crush sleeve and machine down a solid pinion spacer to that dimension and then . I need the torque on the pinion nut for the rear differential. Replace original worn or damaged nuts each time a gear set is changed. Unfortunately, once this tension has been released the crush sleeve cannot hold it again. In either case, it is important that this critical adjustment be performed correctly in order to avoid costly repairs or replacements down the line.

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