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Save Share. The pinion diameter is 1.438 inches, and has 25 splines. Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. GM 8.5 10 bolt - 10 bolt cover with 8.5 ring gear. Find the application and ratio you need? You can use this instead of the crush sleeve. To reach an accurate level of tension or preload, experience and expertise are usually required when dealing with this type of repair work. For a better experience, please enable JavaScript in your browser before proceeding. 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. From there I make very minute changes, checking the pre load with the inch lb torque wrench several times. without any detrimental effects occurring. 9 Minutes Read / When it comes to adjusting the backlash of your vehicle's pinion gear and carrier, there are a few rules of thumb to keep in mind. FORD: .020. 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. I like to slowly tighten the new pinion nut until I take up all of the front to back free play. That being said, it isnot recommended for use behind engines that make a serious amount ofhorsepower. When working on the assembly of a differential, there are two methods for adjusting the pinion depth. Try our Differential Gear Calculator. 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. 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. 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. A forum community dedicated to GMC and Chevy full size owners and enthusiasts. The pinion bearing preload is an important component of the drivetrain system, as it works to ensure that the pinion gear's tapered bearings are running smoothly and efficiently. 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. If i missed any thing PLEASE tell me. LBS. This is very important, because if you go too far the crush sleeve will be ruined. All of the parts we sell are also used every day in our busy service shop. This should result in approximately 7 thousandths of an inch adjustment in terms of backlash. New bearings 19 to 22 inch pounds. 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 . 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. If too tight, the bearings become overstressed and will fail prematurely, causing a catastrophic failure of both the ring and pinion gears. Come join the discussion about performance, lift kits, wheels, tires, modifications, troubleshooting, maintenance, and more! Again, this would be okay in a daily driver or cruiser application, but if installed behind an engine with horsepower numbers climbing into the 400 range, you can plan on an eventual failure. 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. Just out of curiosity,what are the 8.5 (r 65lbft & c 60lbft ?) Come join the discussion about Silverados, Sierras, and other full size trucks performance, modifications, suspension, lift kits, tires, maintenance, and more! PINION NUT GM 7.5 8.5. Ring Gear Backlash Ring Gear Bolts to Cast FT. LBS. Our LS swap adapter kits make it easy! 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? Free Shipping - Yukon Gear & Axle Crush Sleeve Eliminator Kits with qualifying orders of $99. You can feel the power of all that torque in your bones as it propels the car forward even faster than before. For bearings that are already in use, set preload at 15 inch-pounds; if they are new bearings then you should aim for 25 inch-pounds when setting preload. 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 8.5-inch 10-bolt rearend is hugely popular because aftermarket carriers and gears are easily interchangeable. 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. IMPORTANT: The pinion preload should be at or below 4 Nm (35 inch lbs.) 3/8" x all lengths 45-50 ft lb. Race-spec ring and pinion gears for desert racing, rock bouncing, and rock . The Fora platform includes forum software by XenForo. 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. OEM bolts have thread locker on the threads. Record pinion flange rotating torque, with a torque wrench. By reducing the amount of free play between components, preloaded bearings can provide greater accuracy and quieter operation than standard ball bearings with clearances. By manipulating these two components and their ratio to each other, you can achieve different levels of performance from your vehicle that may suit your individual needs better than stock settings would. 1/2" x all lengths 100-110 ft lb. The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. The Fora platform includes forum software by XenForo. Gear oil is nasty stuff, mostly in smell. Axle Retainer Plate Nuts: 3/8" T-bolts - 30 ft lbs. . This is all with the old crush sleeve. Chrysler 300 and Dodge Charger 2006-2008 Torque Specifications Repair Guide. There is no way to happiness.happiness is the way. This ring and pinion setup guide is Copyright Crawlpedia.com - Please provide a link back to this page when copying. 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. Use the blue medium strength on the retaining bolt and the red on the others. Check the pinion preload by rotating the pinion with a torque wrench. It is essential to ensure that the pinion flange is firmly held in place with a fixture or tool. 7/16" x all lengths 60-65 ft lb. Not only is this a wise financial decision for both parties involved, but it also shows how much Chevrolet values customer satisfaction and safety. Some vehicles require an 8.5" 10-bolt pinion nut to secure the rear axle assembly of their vehicle. Pin. 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. 2023 Power Automedia. This procedure is necessary in order to ensure that everything within the drivetrain is working correctly and efficiently. JavaScript is disabled. The side bearing preload is the difference of preloads (5) x the gear ratio (3.73) = 18.65. 1. remove d shaft straps push shaft aside. Oct 20, 2011. BACK LASH 0.000". The LS swap is no doubt still going strong, but if youre planning to run an automatic behind your 4.8, 5.3, or 6.0L LS-powered ride, youll need to pay attention to a few items we discuss in this buyers guide. The pinion nut should then be secured and tightened until there is no bearing play at all. and 12 bolt #s. found these #s at Richmond Gear: Torque specifications. That does not describe how tight the pinion nut needs to be however. GM 14 Bolt Specs (all data for SRW truck 14 Bolt axle - others may vary - see table on "different 14 bolts" below) . Many mechanics use an impact gun while others insist the nut should be torqued by hand. 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. Axle Order Form; Floater Axle Order Form; Custom Driveshaft Order Form; . This means that turning the pedals at the front will turn the back wheel 4.55 times over, which requires quite a bit of effort but allows for fast movement once achieved. Many times, if you locate a 10-bolt rearend, its usually a 7.5-inch unit. Talk to the experts. The first is to use a crush collar; this involves applying pressure between the yoke and cup until it reaches the desired depth. At West Coast Differentials we are committed to making your experience with us totally enjoyable. Or some do it by feel. Oct 29, 2001. Inch pound torque wrench that will read that low of a number which will be "VERY" costly. 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. EDLANTA there is a "crush" spacer between the two pinion bearings that when tightened properly gives you the proper bearing preload. Only 1 nut, it all depends on if your using a new crush collar or not and if your just swapping out the pinion yoke or a full rebuild. Bear Preload IN. 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. Fords small block and big block engine families have their share of flexplate differences. These have been around since 1975, and were installedunder cars, small trucks, and vans up to the 2005 model year. The Hex is 5/16 the threaded part is SAE 5/16 inch 18 threads per inch. Too much won't hurt anything other than break the bolt. Mine is leaking. DANA SPICER: .035. 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. 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. Rotating torque should be equal to the reading recorded during removal plus an additional 0.56 Nm (5 inch lbs.). All 8.6-inchrears have disc brakes, and 8.5-inch units have drum brakes. .006" to .010" 120 ft-lbs. Learn more about GM steering column identification, GM steering column lengths, and GM steering column compatibility. 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. 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 . Speedway also offers the Economy Ring & Pinion Setup Tool we needed. These are considered highway gears that are good for top speed, not for off-the-line performance. The 8.5 rearend will have a round cover, and part of the cover will extend rearward to make room for the ring gear. 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. The 7.5 rearend uses an oval cover and the housing has two small cast-in protrusions near two of the bottom cover bolts. I have been taking it to ~250-300 ft lbs. 8-Inch Ford Rear End Torque Specifications. Use Loctite #271 on the bolt threads and torque in a crisscross fashion to 55 ft-lb. How do you fix a loose pinion bearing preload? The axle shafts are also held in place by four-bolt retainer plates at the outer bearing, not C-clips. 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. The pinion shaft diameter is 1.625 inches and will have either 28 or 30 splines. ft. 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. Jul 2, 2020 / When combined with a low curb weight, this combination creates acceleration so fast it feels almost supernatural. 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 one is not as easy as it sounds. 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. Like the 8.2-inch 10-bolt, the 8.5 10-bolts use C-clips to retain the axles. 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. 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. The oval-shaped cover measures 8 5/16 inches by 10 9/16 inches. grade 8. So, in order to adjust the pinion bearing pre-load, shims of varying thicknesses are inserted into pre-load retainers. 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. 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! Bearing Cap Torque (Foot Lbs.) GM 8.6" gears will fit GM 8.5" axles and as such have become the universal aftermarket size for both. Like all Chevy 10-bolts, the axles are retained by C-clips on the inner end of the axle shaft inside the carrier. The easiest way to tell the difference is by looking at the brakes. This allows you to put the pinion gear in, set the pinion bearing pre-load, set the backlash and then run a contact pattern without the chance of compressing the crush sleeve too much. Products include ring and pinion sets, installation kits and axle shafts for GM, Ford, Chrysler, Jeep, and Toyota vehicles. The pinion nut is a 32mm or 1 1/4" so you need a socket and adapters for that. Use oil on the pinion nut washer surface during all assemblies . Camshaft thrust Plate bolts 106 in-lbs. 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. When additional shims are added, this increases the total width of the retainer assembly, pushing the bearing cones further away from their respective cups and as a result reducing drag on them. It also uses a 10 5/8-inch irregular-shaped cover. The distance between thebottom center bolt in the cover and its adjacent bolts is 3 1/4 inches. If rotating torque is low, tighten pinion nut in 6.8 Nm (5 ft. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. We will safeguard your e-mail and only send content you request. 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. These protrusions are larger than those on the 7.5 rearend. Alternatively, shims can also be used to adjust the pinion depth. Max Ellery's Land Cruiser Repair Manual 1969-1990 (FJ & RJ) Part Number. While engine power is an indicator of a vehicle's ability to accelerate quickly and reach high top speeds, torque is an indication of how efficiently it can move. Not only has the 10-bolt rearend proved its worth in high-performance, high-horsepower applications, but it has also been found to be a great unit for street/strip cars. West Coast Differentials has been distributing quality differential and axle parts since 1982. Torque measures the amount of force that is generated when the engine rotates at a certain speed. 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. I have a leaky pinion seal and housing seal so I am planning on replacing the seals in the very near future. By Albert. Pinion Nut (Solid Spacer) 28-Spline Pinion - 200 ft lbs. Differential cap bolt torque: 90 ft*lb. The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. ALL72156. Zone 1.5 BL, 22x12s, California delete, Detroit TrueTrac, etc. This gives us confidence in the quality of the parts we sell. GM 8.6" differentials can be installed in a GM 8.5" axle with the proper conversion bearings. Edit: 9 Minutes Read / Nov 18, 2016. I have seen the ring gear bolts, pinion nut and retaining bolt come loose, but never a bearing cap bolt. 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. On the other hand, if your backlash is too wide you will need to adjust by moving the carrier towards the pinion with a similar measurement technique. It doesn't have to be hard, and we offer some tips to keep your car's finish in top shape. Talk to the experts. What is the gear ratio on a 10 bolt rear end? A higher engine power combined with more torque enables cars to accelerate faster while using less fuel - making it much more efficient and cost-effective in the long run. 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. When in doubt, refer back to step #6 for more information about suggested torque specs for your particular axle installation project. The "feel" people are way more experienced that you or I so the top one is re-commended. 5 - 8 : Ring Gear Bolt Torque (Foot lbs) 120 : Bearing Cap Torque (Foot lbs) 135 : Pinion Nut Torque: Tighten as necessary to obtain correct preload: Pinion Bearing Retainer Torque (Foot lbs) :65 : . RING GEAR TORQUE FOOR LBS. 2/3 drop, HP Tuned, Built 60e, 4.10s, Yukon Duragrip, etc. The pinion diameter is 1.438 inches, and has 25 splines. See other Red Line Oil Products that we recommend. If it takes more than 25 in lbs to turn the pinion, then you have tightened it too much and you need to back the nut off. The X and F-body spring perches come in two versions: mono-leaf (left) which is shallower than the multi-leaf (right). VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. We were lucky and had a desirable contact pattern on both the drive and coast sides of the gear teeth. Like most 10-bolts, the axles are held in place by C-clips on the inner end of the axles. Loosen the right-side adjusting nut and tighten the left-side adjusting nut until the ring gear contacts the pinion without binding. Date and location of manufacture are stamped in the axle tube, and this table deciphers the code. 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. As well as many other third member torque specs from Strange. It has to be drained to get a peak inside. stock 4L60E on 5th filter/fluid change; 2nd set of drive shaft u . on old bearings. Lifted78Chevy. Increasing the size of the pinion or decreasing the size of spur gear will result in increased top speed for your vehicle; however this will come at cost to acceleration and increase temperatures from increased load. We look forward to serving you! If you are installing an axle and need to know the torque specs, it is important to first understand what torque is. We pressed the new bearings onto the carrier and the front pinion bearing and went ahead and put the assembly together into the housing. 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 . 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. This is an 8.2 BOP axle. The 8.5-inch 10-bolt also shares the same pinion shaft diameter as the more expensive 12-bolt. Mgrotel, nice cliff notes. Tighten to 8 ft-lbs (10 N-m), then tighten an additional 1/3 turn to at least 37 ft-lbs (50 N-M). 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. 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. The retaining bolt can be hard enough to get out without using the red high strength Lock Tight on it. Its strength and reliability have been proven time again, making it an excellent option for drivers looking for reliable performance from their vehicle. 4.replace seal. How tight should a pinion nut be? 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. This method works every time is done precisely as described. Gear Ratio Calculator - Calculate the gear ratio of gears based on their tooth count. 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. I agree that the preload needs to be about 30 inch pounds. Either way, the nut should be tightened to produce 24-32-in-lb of torque to turn the pinion . 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 . Speedway also offers the . A 2.6-3.0 gear ratio range is perfect for flat places and most people find this ratio suitable for their needs. Originally, gear ratios ranged from 2.41 through 4.10. 8 to 11 in-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. Some guys even go to the trouble of making a set-up bearing so you dont have to press on and remove the pinion bearing to try different shims. 14 bolts and 10 bolts are different, not sure about changing seals though. 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). This is especially true when it comes to cycling. Now that we know our pinion depth shim is correct we can do the final assembly. 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. The number of teeth on each of these gears determines how much rotational force is converted into torque or speed. Differential Locker Comparison - A detailed comparison of popular differentials and lockers. I got the price for the seal, and it is near $9. 1/2" T-bolts - 50 ft lbs. These basic steps should pertain to most GM rear differentials and if followed with leave you satisfied for many miles. 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. Ring gear bolts 65 foot pounds, bearing cap bolts 60 foot pounds. 24-32 INCH pounds?? 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. Are all GM 10 bolts the same? While backlash is a necessary component of manufacturing tolerances, it can be a significant source of problems for certain applications. Good luck finding one of these, however, as they are very popular among performance enthusiasts. Speedway Motors employees enjoy not only helping our customers, but also turning some wrenches in their downtime as well. 2. unbolt pinion nut. Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. Pinion nut torque (shimmed preload style): 250 ft*lb. Tighten bolt to 20 ft/lbs. The 8-inch rear axle looks very much like the popular Ford 9-inch rear axle. Rancho Cordova, CA 95742, Bearing Preload, Backlash and Torque Specifications. The rotating torque must be 2 to 3 N-m (15 - 25 inch pounds). When you purchase through links on our site, we may earn an affiliate commission, which supports our community. when assembling the pinion into place, include the crush sleeve between the two pinion bearings. sny 00235 converted 12 Bolt Rear Axle Torque Specs. Back off left-side adjusting nut approximately 2 slots. 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 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. 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. Find the torque thats on it before hand and tighten it down to that afterwards. 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. I have seen street 12 bolts that . Crawlpedia is an off-road encyclopedia featuring a complete list of proper ring and pinion gear set up torque and backlash specs. Rotate the pinion when tightening the nut to seat the bearings evenly. 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.