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. Rotating torque should be equal to the reading recorded during removal plus an additional 0.56 Nm (5 inch lbs.). 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. It refers to how much tension is applied to the spring before it's installed in the vehicle and can be adjusted accordingly. The trick is to get it tight as possible without crushing the sleeve any more then it already is crushed. Save Share. 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. :yipi: Thats it?? This is an 8.2 BOP axle. To do this, measure 10 thousandths of an inch on the shim and shift it accordingly. 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. havent done it, but i have the haynes repair manual and ill type out the steps for you, may take me a second though. Here's a link to when I did mine. 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. Gear oil is nasty stuff, mostly in smell. . If used in a daily driver or cruiser application, the 7.5-inch rearend should survive behind an engine with 350hp, if traction is limited during spirited driving. #5. Bear Preload IN. Learn more about GM steering column identification, GM steering column lengths, and GM steering column compatibility. Step 1: To seat, torque nut to 50 (lb-ft) while spinning hub. It's not easy, but pushing yourself can be rewarding; after all, with hard work come great rewards! I got the price for the seal, and it is near $9. One is the small, 7.5-inch, another is the 8.2-inch, and yettwo more are the 8.5 and 8.6-inch. Maintaining your car's paint finish is essential to keep it looking great. But, did you know there is more than one style of 10-bolt rearend? You will also notice the large, flat, cast-in protrusions at thefive andseven oclock positions. 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. 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. Oct 29, 2001. BOP stands for Buick/Oldsmobile/Pontiac. Once properly secured in place, you should have no further issues with your pinion nut installation. A 2.6-3.0 gear ratio range is perfect for flat places and most people find this ratio suitable for their needs. Automotive Chassis Torque Specs. It first appeared in 1970 production cars as a corporate replacement for the 8.2-inch 10-bolt rearend. When it comes to Chevrolet rearends, its the 12-bolt that seems to get all the accolades. Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. Use oil on the pinion nut washer surface during all assemblies . This tension is achieved through a collapsible spacer which is placed between the bearings and then compressed by turning the pinion gear nut. Unfortunately, you cannot rely on this torque because the crush sleeve provides unpredictable and non-linear resistance as it buckles and crushes. The 7.5 rearend uses an oval cover and the housing has two small cast-in protrusions near two of the bottom cover bolts. Pinion Bearing Preload (New) (inch/lbs) Pinion Bearing Preload (Used) (inch/lbs) Backlash (.001 in) Ring Gear Bolt Torque (Foot lbs.) 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. With this pinion nut, you can rest assured that your vehicle will be ready for whatever terrain comes its way! 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. 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. Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. This is especially true when it comes to cycling. 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. 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. The following are recommended Differential Set-Up Specifications for various differentials. Pinion preload (used bearings): 8 - 10 in*lb. The 8.5-inch pinion diameter is 1.625 inches, whereas the 8.2-inch is smaller at 1.435 inches. We started by getting a rebuilt kit from Motive Gear . By Albert. A Series 2 carrierwill work with 2.56 and higher gears (numerically lower) such as 2.41. range. GM 8.5 10 bolt - 10 bolt cover with 8.5 ring gear. You tighten it until the bearing preload is correct. May 22, 2021 / I have seen the ring gear bolts, pinion nut and retaining bolt come loose, but never a bearing cap bolt. JavaScript is disabled. 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. GM 8.6" gears will fit GM 8.5" axles and as such have become the universal aftermarket size for both. The pinion nut is a 32mm or 1 1/4" so you need a socket and adapters for that. I thought the pinion nut would be more like 50-75 FOOT pounds? ALL72156. 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. With the carrier removed w/ new bearings pinion bearing preload should measure a rolling torque of 20-30 in/lbs. As the speedometer rises, each gear shift is accompanied by an even more intense sensation of power, making every drive exhilarating and unforgettable. 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. Currie 60/70 : Torque . 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 . Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. GM 10 Bolt 8.2; GM 10 Bolt 8.5; GM 12 Bolt 8.875; GM 8.6 IRS; GM Install Kits; MOPAR. 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. Sometimes, you need to push yourself. It saved me time and effort trying to crush a brand new crush sleeve. Then use lock-tight on the threads and tighten the nut back to where it was. CAP TORQUE. increments until rotating torque is achieved. 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. when assembling the pinion into place, include the crush sleeve between the two pinion bearings. 9 Minutes Read / First mark the position of the nut with a chisel or other method so you can tighten it back to exactly the same place. You have to do it a little differently though. Additionally, vehicles with higher torque have better control over their handling due to stronger low-end acceleration which makes them safer on roads and highways. sny 00235 converted Used bearings 10 to 14 inch pounds. Find the application and ratio you need? However, the gears will not interchange with a Chevy 8.2. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. RING GEAR TORQUE FOOR LBS. These have been around since 1975, and were installedunder cars, small trucks, and vans up to the 2005 model year. As a result, this construction became one of the most popular axle assemblies on the market due to its durability and affordability. Since it was so widely used, there is a better possibility of finding one of them at a salvage yard thanlocating a 12-bolt. 14 TO 19. 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 results in improved performance, longer life span and more efficient operation of the system. Shop Differential Pinion Bearing Spacers and Sleeves at Summit Racing. Ring gear bolts. All 8.6-inchrears have disc brakes, and 8.5-inch units have drum brakes. 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. Just out of curiosity,what are the 8.5 (r 65lbft & c 60lbft ?) Is a GM 10 bolt rear end good? VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. It was used in different models by all GM divisions with the exception of Cadillac. Read More. Some builders . Backlash = 6-10 (.001 inch) 2003 S-10 ZQ8 - 262/M5:bowtie: 1986 Pontiac Trans Am - 355/A4 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. See other Red Line Oil Products that we recommend. It is essential to ensure that the pinion flange is firmly held in place with a fixture or tool. By continuing to use our website, you agree to our Privacy Policy. Recently a friend enlisted me to help rebuild his 7.5 GM 10 bolt. Follow along as Zach works over the old 10 bolt and brings it back to life. His passion for performance got him noticed by many locals, and he began helping them modify their vehicles. Talk to the experts. It also uses a 10 5/8-inch irregular-shaped cover. As well as many other third member torque specs from Strange. We believe that our exceptional customer service and product knowledge is what sets us apart from the competition. 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. Not only will you be getting the best quality performance with JEGS Pinion Nut, but you'll also have the convenience of knowing it's made to fit GM 8.875 inch 12-bolt car and truck axles. This is very important, because if you go too far the crush sleeve will be ruined. Nut secures driveshaft yoke to pinion gear. 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 . 8 & 9 BOLTS Locknut Size Threads per inch Steel Hex Locknut Steel Hex Flange Nut Grade C FNL Grade 9 Grade F Grade G Clamp Load (lbs.) and 12 bolt #s. found these #s at Richmond Gear: Torque specifications. With the exception of truck differentials with 30-spline axles, andthosecarrying 2.41 and 2.73 gears (series two), the differentials will support all gear ratios without having to change carriers. 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. 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. I have seen street 12 bolts that . 3/8" T-bolt - 30 ft lbs. The purpose of preloading a bearing is to eliminate any existing clearance that has been designed into standard ball bearings by utilizing tension or compression loads applied directly onto each component within the assembly. If your mom is lunch, then yes, I've eaten lunch twice today. The PYN10 is a 30 spline pinion nut designed for this purpose, and it is specifically made to be used with vehicles that have a 30 spline pinion in their 10-bolt 8.5" rear end assembly. Speedway Motors employees enjoy not only helping our customers, but also turning some wrenches in their downtime as well. JavaScript is disabled. 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. Follow along as we show how to measure and install a C10 one piece driveshaft. This heavy duty nut has been designed using high grade steel and features a zinc plated finish for maximum protection against rust and corrosion. 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. The most current parts and application information can always be found here on our website or by calling one of our differential parts experts. For inquiries about our products and services, please fill out the form below. Carrier Cap Bolts. . 35-Spline Pinion - 250 ft lbs. By Albert. Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. A forum community dedicated to GMC and Chevy full size owners and enthusiasts. The reliability of the axle tube and . IMPORTANT: The pinion preload should be at or below 4 Nm (35 inch lbs.) How Much Hp Can Stock 5.3 Injectors Handle, What Kind Of Gas Does A Jeep Cherokee Take, Popping Noise When Accelerating And Braking. To ensure optimal performance in any application, it is essential to pay close attention to the amount of backlash between gears on all differentials. Now that we know our pinion depth shim is correct we can do the final assembly. I don't use it on the bearing cap bolts. 1989 GMC Suburban SLE 2500 4WD 5.7L Granny 4-speed. This essential part is designed for use on vehicles with a 1 1/4 inch socket and 7/8 x 14 thread that can be found in many common automotive applications such as differential covers, yokes, and axle shafts. The Fora platform includes forum software by XenForo. 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. Camshaft thrust Plate bolts 106 in-lbs. 1988 C1500 Silverado, 5.7L with some go fast parts. Differential Locker Comparison - A detailed comparison of popular differentials and lockers. 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. checking the pre load with the inch lb torque . This website uses cookies or similar technologies to enhance your browsing experience. 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. 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. 4.replace seal. What happens if you have too much backlash in differential. Use the blue medium strength on the retaining bolt and the red on the others. The covers on the 8.5-inch rearends are often 11 inches round with a bulge on the drivers side to accommodate the ring gear. Then after getting the proper gear patterns you put the new crush sleeve and seal in place and tighten the pinion nut to force the crush sleeve. The concept of low-end torque is an important one for drivers to understand when it comes to the performance of a vehicle. FSM says 181-325 ft-lbs. For a better experience, please enable JavaScript in your browser before proceeding. The 12-bolt is generally considered to be the stronger of the two rear axles. 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. Connecting Rod Cap Nuts 38. 8 to 11 in-lbs. 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. 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. That is theimpetus for why we decided to put this swap meet/junkyard identification guide together. One will want to torque the pinion nut to 190- 240 ft lbs (Small Diff's) D60 and larger 225 -350 Ft lbs with the proper preload achieved. This will help ensure that there isn't an excess of tension on these components, which can lead to premature wear or even failure. Take Zach R. for instance. Well help you determine the correct flexplate for your Chevy engine in this buyers guide. 1989 Toyota Pickup/3vze/R150F/Dual RF1A's/8.0 Detroit/8.0 Detroit/5" SAS/38 TSL'S. Backlash refers to the distance between two mating gear teeth when they are not engaged. GM 8.5" 10 Bolt / Ring & Pinion Gear Set w/ Master Bearing . If the nut is loose then the crush sleeve must be changed. Products include ring and pinion sets, installation kits and axle shafts for GM, Ford, Chrysler, Jeep, and Toyota vehicles. The small torque . Try our Differential Gear Calculator. How a GM 10-Bolt Differential Goes Bad. 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. Crankshaft Pulley to Hub Bolts 37. Axle Images: Axle Details. Next, attach the pinion nut onto the end of the shaft and use a torque wrench to tighten it to between 110-125 ft/lbs of torque. When it comes to suspension, preload is an important factor. If you locate a rearend that has coil spring perches, it could be from a G, A, B-body, or El Camino. Next we disassembled everything, starting with the cross pin bolt, cross pin and C clips. If you're looking to get the most out of your pickup truck, you may want to consider changing the gear ratios. Skip to main content. Mgrotel, nice cliff notes. 7.25 12-14: 6-7: 6-10: 55: 50: 8 IFS: 12-15: 6-8: 6-10: 55: 60: 8.25 12-15: 6-8: 6-10: 55: 60: 8.75 - 41 Case: 13-15: 6-8: 6-10: 55: 90: 8.75 - 42 Case: 15-25: 7 . On the other hand, if preload is too tight then you'll need to take out the pinion gear and add extra shims in order to reduce bearing pressure against the races. 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. The pinion shaft diameter is 1.625 inches and will have either 28 or 30 splines. The 8.5-inch is often referred to as the "GM corporate 10-bolt" because of its multiple uses, and the 8.5-inch is a semi-float axle, meaning it has only one axle bearing per side, mounted inside the axle tube. In this context, "hardest gear" refers to the ratio of front sprocket teeth to rear sprocket teeth - typically expressed as 4.55:1. Over 6,000 Automotive Torque Specs. How to eliminate unwanted to holes in your car's body, trunk, floor, or firewall with easy to use patch plugs from Speedway Motors. Pinion Nut Torque Spec. For reference use at own risk. Race-spec ring and pinion gears for desert racing, rock bouncing, and rock . Oct 20, 2011. The pinion diameter is 1.438 inches, and has 25 splines. 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. Like all Chevy 10-bolts, the axles are retained by C-clips on the inner end of the axle shaft inside the carrier. Pinion nut torque (shimmed preload style): 250 ft*lb. Sie Bear Caps FT. LBS; AMC 20 Some of the most popular GM vehicles have come with 10-bolt rear ends. With its superior strength and durability, you can count on your PYN10 pinion nut to remain securely in place for years of reliable service. If it takes a 5/16-inch wrench to remove it, its an 8.5. 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. 2429 Mercantile Drive Suite A, Rancho Cordova, CA 95742, Copyright 2023 West Coast Differentials | Website Design by. for new bearings. 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. big gear head. We'll send you the most interesting Chevy Hardcore articles, news, car features, and videos every week. Bearing Cap Torque (Foot Lbs.) Give us a try, we think you'll be glad you did! 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. One intimidating part for a lot of guys is the rear end. We pressed the new bearings onto the carrier and the front pinion bearing and went ahead and put the assembly together into the housing. The 8-inch rear axle looks very much like the popular Ford 9-inch rear axle. Unfortunately, unless you have the two units side by side, it is nearly impossible to tell them apart. Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. Differential cap bolt torque: 90 ft*lb. 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. The 8.5 rearend will have a round cover, and part of the cover will extend rearward to make room for the ring gear. The carrier bearing rides in the races and you will snap the bolt off before you warp or crack the races. The X and F-body spring perches come in two versions: mono-leaf (left) which is shallower than the multi-leaf (right). 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. For a better experience, please enable JavaScript in your browser before proceeding. 2. unbolt pinion nut. . What is the gear ratio on a 10 bolt rear end? 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. CHECK FREQUENTLY as you progressivley tighten the pinion nut. Ring gear bolts 65 foot pounds, bearing cap bolts 60 foot pounds. It doesn't have to be hard, and we offer some tips to keep your car's finish in top shape. 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. The torque it takes to crush . I agree that the preload needs to be about 30 inch pounds. 2008 Sprinter 2500 170 - camper van. Our custom-length driveshaft kits make it a breeze to get the perfect 67-72 C10 driveshaft length. 8-11 in/lbs for broken in bearings is acceptable. If it takes a 1/2-inch wrench to remove it, its an 8.2. Upgrade your cam, intake, headers, stall converter, and the list goes on from there. 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. Mine was a pita. By reducing the amount of free play between components, preloaded bearings can provide greater accuracy and quieter operation than standard ball bearings with clearances. We were lucky and had a desirable contact pattern on both the drive and coast sides of the gear teeth. Torque Specs on Dana 60. Order before 4PM and most parts ship out the SAME DAY. To begin, the yoke or coupler must be attached to the pinion shaft. For 30 spline pinion axles, PYN10 offers a 10-bolt 8.5" pinion nut that is designed to provide secure and reliable performance in the toughest of conditions. Therefore, when building a performance car or truck that will be subjected to higher than normal stresses and torque loads, such as those produced by high horse power engines or increased traction created by sticky drag racing tires, it may be beneficial to choose a 12-bolt instead of a 10-bolt axle assembly in order to ensure maximum strength and reliability. on new bearings, or 1.2 Nm (10 inch lbs.) The OEM pinion nut is 1 1/4 inches. 3/8" x all lengths 45-50 ft lb. There are other 14b axles out there - a 9.5" ring gear semi-float for one, and even a 11.5 . 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! By doing this, it allows for the desired amount of pressure or preload to be applied on these bearings so they are able to work in harmony with each other within their particular drivetrain system. 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. 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.
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