Well show you what to look for in this buyers guide. Fords small block and big block engine families have their share of flexplate differences. Dana Technical Service Specs. FSM says 181-325 ft-lbs. Or some do it by feel. 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. Crankshaft Main Bearing Cap Bolts 70. If the backlash is too tight, you'll need adjust the carrier shim by moving it away from the pinion. 1/2" x all lengths 100-110 ft lb. Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. One is the small, 7.5-inch, another is the 8.2-inch, and yettwo more are the 8.5 and 8.6-inch. To ensure optimal performance in any application, it is essential to pay close attention to the amount of backlash between gears on all differentials. need rear diff torque specs - Diesel Place What is the torque specs on pinion nut? Build your own custom newsletter with the content you love from Chevy Hardcore, directly to your inbox, absolutely FREE! Chevy Hardcore NEWSLETTER - SIGN UP FREE! Pinion preload (new bearings): 17 - 30 in*lb. 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. you have it pretty much. It also has an inner diameter of 1 . Our Mopar flexplate buyers guide will help. Follow along as our employee Zach installs a GM 10 bolt rebuild kit from Motive Gear. 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. What do I torque pinion nut to ( 14 bolt FF ) | CK5 Network I have been taking it to ~250-300 ft lbs. Just get a couple sacrificial pinion bearings and open them up a little so you don't have to press them on and off the pinion and add/remove shims until you get the correct preload shown on page 2 of the set up manual. It has to be drained to get a peak inside. 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. 8-Inch Ford Rear End Torque Specifications. If you are installing an axle and need to know the torque specs, it is important to first understand what torque is. Pinion torque specs?? Plz help | GM Truck Club Forum Once you give everything a thorough inspection you can begin the re-assembly process. Oct 29, 2001. Axle Type Cover Bolts FT. LBS. 8-10 ft lbs: None: None: GM 12 Bolt Car: Torque: Lubricant: Thread Locker: Main Caps: OEM Housing: . 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. 9 Minutes Read / How tight should a pinion nut be? 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 . If sticky tires are used, youll quickly turn the 7.5-inch rear into a pile of unusable parts. 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. Upon initial . Rancho Cordova, CA 95742, Bearing Preload, Backlash and Torque Specifications. 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. Originally, gear ratios ranged from 2.41 through 4.10. Tighten to 8 ft-lbs (10 N-m), then tighten an additional 1/3 turn to at least 37 ft-lbs (50 N-M). At West Coast Differentials we are committed to making your experience with us totally enjoyable. For the street/strip car, the 10-bolt rearend is a great choice. 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. The 12-bolt is generally considered to be the stronger of the two rear axles. The following are recommended Differential Set-Up Specifications for various differentials. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. This should result in approximately 7 thousandths of an inch adjustment in terms of backlash. Step 2: Back off, then torque to 35 (lb-ft) for automatic hubs,or 50 (lb-ft) for manual hubs. 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. Introduction. 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. Pinion Nut Torque Spec - Ford Truck Enthusiasts Forums Repairing your C2 and C3 Corvette Rearend - MotorTrend When in doubt, refer back to step #6 for more information about suggested torque specs for your particular axle installation project. Im gonna go buy a good manual for shit like this. The tension between the bearings of a crush sleeve is a very important factor in its performance, as it helps to ensure that the bearing stays correctly set and does not move or become misaligned. It was used in different models by all GM divisions with the exception of Cadillac. What is the torque for the pinion nut on a 68 Camaro 10-bolt - Answers You can use this instead of the crush sleeve. 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. 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. Its strength and reliability have been proven time again, making it an excellent option for drivers looking for reliable performance from their vehicle. Quaility Gears provide guaranteed performance. New bearings 19 to 22 inch pounds. Low-end torque refers to the amount of power and force generated by an engine at low revolutions per minute (RPMs), usually between 2000 and 3000. Gear Ratio Finder - Find the ideal axle gear ratio for your new larger or smaller tires. torque specs 8.5 rear | NastyZ28.com So, in order to adjust the pinion bearing pre-load, shims of varying thicknesses are inserted into pre-load retainers. 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. The pinion shaft diameter is 1.625 inches and will have either 28 or 30 splines. By Albert. 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. 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. Find out how to access AutoZone's Torque Specifications Repair Guide for 300, 300C & Magnum 2006-2008, Charger 2006-2008. The Hex is 5/16 the threaded part is SAE 5/16 inch 18 threads per inch. GM 8.5" 10 bolt - Quick Performance #5. It said you want this to be from 5-35. The carrier bearing rides in the races and you will snap the bolt off before you warp or crack the races. The pinion nut is designed to securely fasten the components together while also providing an effective seal against contamination from dirt, dust and other debris. If it takes a 5/16-inch wrench to remove it, its an 8.5. The 7.5 rearend uses an oval cover and the housing has two small cast-in protrusions near two of the bottom cover bolts. 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 . Use Loctite #271 on the bolt threads and torque in a crisscross fashion to 55 ft-lb. Axle Order Form; Floater Axle Order Form; Custom Driveshaft Order Form; . The first is to use a crush collar; this involves applying pressure between the yoke and cup until it reaches the desired depth. This is very important, because if you go too far the crush sleeve will be ruined. The 8.5-inch 10-bolt rearend was used in cars and trucks over a wide range of years. 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. Determining the correct flexplate for your V8 Mopar-powered project takes a little understanding of how these engines were balanced. 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. Connecting Rod Cap Nuts 38. 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. 1988 C1500 Silverado, 5.7L with some go fast parts. I like to slowly tighten the new pinion nut until I take up all of the front to back free play. Alternatively, shims can also be used to adjust the pinion depth. What is the gear ratio on a 10 bolt rear end? How to eliminate unwanted to holes in your car's body, trunk, floor, or firewall with easy to use patch plugs from Speedway Motors. For inquiries about our products and services, please fill out the form below. Ring and Pinion Ratio Variations - An explanation of why some ring and pinion gear ratios vary. General Motors torque specifications - rockfordcv.com . I agree that the preload needs to be about 30 inch pounds. Sometimes it feels like youre in a race car when you accelerate hard with a high-torque vehicle. These are two pinion gears for the 8.5-inch 10-bolt. GM: .035. It is robust enough to withstand any punishment inflicted on it by racetrack use. But for all intents and purposes, the 10-bolt rearend is a great unit for a street/strip car, and can be stout enough to handle even the occasional abuse delivered by use at the racetrack. :yipi: Thats it?? Currie 60/70 : Torque . 2. unbolt pinion nut. Here's a link to when I did mine. 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. They say ignorance is bliss but I say it's just damn expensive. Pinion seal replacement on a 10 bolt rear | GMC Truck Forum Not only was the 10-bolt assembly used in low performance applications, but it was also utilized in a variety of different vehicles ranging from Camaros, Chevelles and Impalas to even the earlier Chevy IIs. It is important to note that if possible, it is best practice to use an old or used pinion nut for this operation, as new ones can often bind when tightened too much. 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. The 8.5-inch 10-bolt rearend is hugely popular because aftermarket carriers and gears are easily interchangeable. Thats usually proven when used in high-performance, high-horsepower applications. If too tight, the bearings become overstressed and will fail prematurely, causing a catastrophic failure of both the ring and pinion gears. . DIFF MODEL. 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). MOPAR: 8.75" x 1.75" pinion: .090. . JavaScript is disabled. 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. I have a leaky pinion seal and housing seal so I am planning on replacing the seals in the very near future. Okay to Reuse the Pinion Crush Sleeve when Changing Gears? 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. Find the application and ratio you need? 8-11 in/lbs for broken in bearings is acceptable. The trick is to get it tight as possible without crushing the sleeve any more then it already is crushed. Chevrolet GM 8.875 Inch 12 Bolt Truck Ring and Pinion Sets When combined with a low curb weight, this combination creates acceleration so fast it feels almost supernatural. Unfortunately, once this tension has been released the crush sleeve cannot hold it again. Sometimes strength is an important factor when choosing between components, and this is true with the 10-bolt and 12-bolt rearends. for a ten bolt rear it should be about 20 inch pounds while you are turning the torque wrench. 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. 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? When the preload of the pinion bearings is incorrectly adjusted, it can have serious consequences. This is an 8.2 BOP axle. You will also notice the large, flat, cast-in protrusions at thefive andseven oclock positions. 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. Step 3: Back off 3/8-turn for automatic hubs, and just enough to free the bearing for manual hubs. 2429 Mercantile Drive Suite A 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. Is a GM 10 bolt rear end good? CAP TORQUE. 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. Tips For Rebuilding A GM 8.5" 10-Bolt Rear Differential When installing a new 8.5-inch 10-bolt rear differential, it is important to use the right pinion nut for your application. 8.5 10 bolt pinion preload, UPDATE on build - Team Camaro Tech 1. remove d shaft straps push shaft aside. Backlash arises when two gear teeth mesh together in order to transmit power from one shaft to another; the teeth need some play to avoid jamming and ensure smooth operation. 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. Follow along as we show how to measure and install a C10 one piece driveshaft. These have been around since 1975, and were installedunder cars, small trucks, and vans up to the 2005 model year. Not only is it important to keep the backlash variation under 0.005?, but in an ideal world, no variation should be present at all. Our LS swap adapter kits make it easy! When changing a ring & pinion and doing final install of pinion there is no torque spec on the pinion nut itself. With proper maintenance, this rearend will hold up over time and ensure that your vehicle runs smoothly no matter what sort of conditions you put it in. 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. 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. Pinion shaft lock bolt torque spec | NastyZ28.com Max Ellery's Land Cruiser Repair Manual 1969-1990 (FJ & RJ) carrier bearings, races, crush sleeve, pinion nut, pinion seal, a gasket and even has the gear marking grease included. PDF TORQUE-TENSION REFERENCE GUIDE - Fastenal When I changed all the bearings in my suburban rear end, I bought the crush sleeve eliminator shims from Summit. The PYN10 pinion nut has been specifically designed to fit 30 spline pinions and provide a secure fit and lasting performance. This method works every time is done precisely as described. How do you fix a loose pinion bearing preload? If you installed a new seal, add 1 or 2 in-oz. Sure, you know whats in there and what it does but are you willing to tear into it and rebuild the differential? Torque / Capacities - Currie Enterprises Would this be the same How to write up for my truck? 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. 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. 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 . Instead of using a C-clip to hold the axle in the housing, these axle assemblies use bolt-in axles, much like an 8.2 BOP rearend. The retaining bolt can be hard enough to get out without using the red high strength Lock Tight on it. 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. Ring Gear Backlash Ring Gear Bolts to Cast FT. LBS. Next we disassembled everything, starting with the cross pin bolt, cross pin and C clips. When compressing the crush sleeve, many guys use an impact wrench and end up crushing it too far, ruining the sleeve. BillaVista.com-14-Bolt Bible Tech Article by BillaVista Dana 60 Gear Installation - Strange Engineering The pinion diameter is 1.438 inches, and has 25 splines. If it takes a 1/2-inch wrench to remove it, its an 8.2. Pinion Nut FT. LBS. Upgrade your cam, intake, headers, stall converter, and the list goes on from there. There are several differentials for the 10-bolt rearend. to do this. 1/2" T-bolts - 50 ft lbs. All rights reserved. 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. 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. Talk to the experts. big gear head. You can replace the pinion seal without changing the crush sleeve. increments until rotating torque is achieved. Gear oil is nasty stuff, mostly in smell. Bearing Cap Torque (Foot Lbs.) Torque Specs Dana 60 | Off Road Vehicles 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. on old bearings. 12 Bolt Rear Axle Torque Specs. 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. Tightening Torque Clamp Load This is done in order to decrease pre-load on the bearings; adding more shims will have an overall effect of decreasing it. 8 to 11 in-lbs. 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. 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. 3/8" x all lengths 45-50 ft lb. It first appeared in 1970 production cars as a corporate replacement for the 8.2-inch 10-bolt rearend. RING GEAR TORQUE FOOR LBS. 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. It is important to have the right pinion nut for your 8.5-inch 10-bolt rearend. Used bearings 10 to 14 inch pounds. 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? The engine roars and the tires dig into the pavement as they work to move your car forward, pushing you back into your seat with tremendous force. tighten the nut down till its snug and put on your torque wrench and turn it about 3 revolutions. 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. We have your differential parts in stock ready to ship today. We pressed the new bearings onto the carrier and the front pinion bearing and went ahead and put the assembly together into the housing. Ford 9 inch Torque Specs for Ford 9 inch center Section torque specs. 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. Free Shipping - Yukon Gear & Axle Crush Sleeve Eliminator Kits with qualifying orders of $99. 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. One thing often overlooked is the RTV sealant that needs to be applied to the splines (otherwise rear end grease can leak past the splines), and locktite on the new pinion nut. 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. By continuing to use our website, you agree to our Privacy Policy. 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. This applies to all types of vehicles with any type of gearing system regardless of pitch or size it doesnt matter which one you change as long as you can adjust it accordingly. http://www.gmfullsize.com/forum/showthread.php?t=41717&highlight=pinion+seal. So, when adjusting preload, if it is too loose then the shims should be removed. It was in the 30-35 I "think" from GM. Setup Specifications. 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. Finding a 12-bolt that is affordable, is getting to be anearly impossible endeavor. 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. 2 ways. You tighten it until the bearing preload is correct. Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. Record pinion flange rotating torque, with a torque wrench. 3. remove yoke from splines. Both axles use a third member that contains the differential, which is made up of the . Since it was so widely used, there is a better possibility of finding one of them at a salvage yard thanlocating a 12-bolt. It has been proven to be reliable in high-performance and high-horsepower applications, but it can also handle occasional abuse from use on the racetrack. Speedway also offers the . BOP stands for Buick/Oldsmobile/Pontiac. As a result, this construction became one of the most popular axle assemblies on the market due to its durability and affordability. GM 8.875" 12 Bolt Differential Ring Gear and Pinion Set. 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. Some vehicles require an 8.5" 10-bolt pinion nut to secure the rear axle assembly of their vehicle. 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. 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. The number of teeth on each of these gears determines how much rotational force is converted into torque or speed. That is theimpetus for why we decided to put this swap meet/junkyard identification guide together. We will safeguard your e-mail and only send content you request. 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. 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. 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.
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