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. This ring and pinion setup guide is Copyright Crawlpedia.com - Please provide a link back to this page when copying. 3/8" x all lengths 45-50 ft lb. Our LS swap adapter kits make it easy! 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! Follow along as our employee Zach installs a GM 10 bolt rebuild kit from Motive Gear. It refers to how much tension is applied to the spring before it's installed in the vehicle and can be adjusted accordingly. That being said, limited gear sets are offered for the carriers, especially if you plan to change gear ratios. havent done it, but i have the haynes repair manual and ill type out the steps for you, may take me a second though. Is a GM 10 bolt rear end good? For that reason,many enthusiasts are considering the 10-bolt. I have been taking it to ~250-300 ft lbs. When looking at the housing from the rear, an 8.5 will have two squared off chunks of casting hanging on each side near the bottom of the differential. Dana Technical Service Specs. 9 Minutes Read / If sticky tires are used, youll quickly turn the 7.5-inch rear into a pile of unusable parts. If it takes a 1/2-inch wrench to remove it, its an 8.2. When the preload of the pinion bearings is incorrectly adjusted, it can have serious consequences. Torque is a measure of rotational force that must be applied in order to secure components such as axles and other parts together. For the fastest service, call our Differential Parts Experts at (800) 510-0950 for immediate assistance. The Hex is 5/16 the threaded part is SAE 5/16 inch 18 threads per inch. 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. If the backlash is too tight, you'll need adjust the carrier shim by moving it away from the pinion. Nut secures driveshaft yoke to pinion gear. Furthermore, its thread size of 1 7/16"-20 makes it compatible with nearly all GM style rear ends from 1955 to present day models. By reducing the amount of free play between components, preloaded bearings can provide greater accuracy and quieter operation than standard ball bearings with clearances. 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. Automotive Chassis Torque Specs. OEM bolts have thread locker on the threads. The rotational torque spec is between 15-19. 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. Give us a try, we think you'll be glad you did! Quaility Gears provide guaranteed performance. Once the specified preload has been obtained, make sure the bearings are seated by rotating the pinion several times. Sometimes strength is an important factor when choosing between components, and this is true with the 10-bolt and 12-bolt rearends. ExtCab96S_Dime . you have it pretty much. 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). 6 TO 10. You will also notice the large, flat, cast-in protrusions at thefive andseven oclock positions. However, the gears will not interchange with a Chevy 8.2. 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. GM 10.5" 14 Bolt: 20 to 35 in-lbs. . . It said you want this to be from 5-35. For the street/strip car, the 10-bolt rearend is a great choice. Pinion Nut Torque Spec. 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 . The 8.5-inch 10-bolt rearend is hugely popular because aftermarket carriers and gears are easily interchangeable. The distance between thebottom center bolt in the cover and its adjacent bolts is 3 1/4 inches. Continue tightening the pinion nut to collapse the spacer and preload the bearings. The large flanges are easy to grip and make installation or removal easier than ever before, allowing you to easily tighten or loosen the nut without fear of it slipping away. 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. Crankshaft Pulley to Hub Bolts 37. Lifted78Chevy. There are a few that have geared axles on here so they should chime in and help out with Real TECH :rocking: I used an 18" breaker bar with a 2 foot pipe on the end of it in order . The oval-shaped cover measures 8 5/16 inches by 10 9/16 inches. 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. Locate a Sierra Gear & Axle Distributor near you. Use the blue medium strength on the retaining bolt and the red on the others. 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. Peter - I'm retired but work part time as a pain in the ass. 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. Sometimes, you need to push yourself. But, did you know there is more than one style of 10-bolt rearend? Pinion Bearing Preload (New) (inch/lbs) Pinion Bearing Preload (Used) (inch/lbs) Backlash (.001 in) Ring Gear Bolt Torque (Foot lbs.) Preloading a bearing eliminates the clearance, which increases stiffness and reduces friction. Originally, gear ratios ranged from 2.41 through 4.10. The specified preload needs to be obtained by carefully crushing the spacer with just enough force from turning the pinion nut in order for it not to be too loose or too tight, as either one can cause serious damage if done incorrectly. 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. 2.2L FOUR CYLINDER ENGINE: Camshaft sprocket bolt 96. 1/2" T-bolts - 50 ft lbs. . The X and F-body spring perches come in two versions: mono-leaf (left) which is shallower than the multi-leaf (right). The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. 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. **Note the Pinion nut is in INCH pounds Ring Gear Bolts = 55 lb. The more torque produced, the less energy needed to move the car forward. 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 . Have a seal puller if possible, makes getting the old one out a lot easier. 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. Currie 44 : Torque: Pinion Nut (Solid Spacer) 250 ft lbs. Bear Preload IN. Part Number. 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. Oct 20, 2011. How do you fix a loose pinion bearing preload? Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. Tighten bolt to 20 ft/lbs. 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. First mark the position of the nut with a chisel or other method so you can tighten it back to exactly the same place. 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. Introduction. Fords small block and big block engine families have their share of flexplate differences. The 8-inch Ford rear axle was used from the early 1960s to 1980 in small and mid-size passenger cars with six- and small-block V-8 engines. Follow along as Zach works over the old 10 bolt and brings it back to life. 8-11 in/lbs for broken in bearings is acceptable. It is not an uncommon sight to see a Yukon Gear Pinion Nut when it comes to automotive repairs. range. Sierra Gear & Axle is a premium line of light-duty differential parts. 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. 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 . We pressed the new bearings onto the carrier and the front pinion bearing and went ahead and put the assembly together into the housing. Sie Bear Caps FT. LBS; AMC 20 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. The 8-inch rear axle looks very much like the popular Ford 9-inch rear axle. So, in order to adjust the pinion bearing pre-load, shims of varying thicknesses are inserted into pre-load retainers. Before disassembly, we marked the bearing caps and kept the side bearing shims on the correct side. 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. Additionally, it increases load capacity because it prevents misalignment due to vibration or thermal expansion of components. 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. Allstar Pinion Nut GM 7.5 8.5 ALL72156. 24-32 INCH pounds?? Sometimes when repairing or replacing components within a transmission, you may encounter a crush sleeve. 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. Race-spec ring and pinion gears for desert racing, rock bouncing, and rock . That being said, it isnot recommended for use behind engines that make a serious amount ofhorsepower. It was used in different models by all GM divisions with the exception of Cadillac. Well help you determine the correct flexplate for your Chevy engine in this buyers guide. If you are installing an axle and need to know the torque specs, it is important to first understand what torque is. It is important to have the right pinion nut for your 8.5-inch 10-bolt rearend. 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 pinion nut is designed to securely fasten the components together while also providing an effective seal against contamination from dirt, dust and other debris. 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. 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. All rights reserved. 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 will cause the bearings to press more firmly against the races, thereby increasing preload tension. Not only is this a wise financial decision for both parties involved, but it also shows how much Chevrolet values customer satisfaction and safety. The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. West Coast Differentials has been distributing quality differential and axle parts since 1982. Upon initial . Data is accurate to the best of our knowledge and is offered as-is with no guarantee. 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. 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. This technology is particularly advantageous in improving vehicle handling and traction under all types of driving conditions, from wet roadways to tight turns. 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. Axle Images: Axle Details. It is essential to ensure that the pinion flange is firmly held in place with a fixture or tool. It saved me time and effort trying to crush a brand new crush sleeve. 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. Date and location of manufacture are stamped in the axle tube, and this table deciphers the code. 35-Spline Pinion - 250 ft lbs. The most current parts and application information can always be found here on our website or by calling one of our differential parts experts. Some of the most popular GM vehicles have come with 10-bolt rear ends. 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. Sometimes, pinion bearing preload can be a tricky procedure. 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. TORQUE SPECIFICATIONS. Install left-side adjusting nut lock, washer, and bolt. Find out how to access AutoZone's Torque Specifications Repair Guide for 300, 300C & Magnum 2006-2008, Charger 2006-2008. Some pinion nuts require a special procedure to be properly installed. Alternatively, shims can also be used to adjust the pinion depth. Try our Differential Gear Calculator. Speedway also offers the Economy Ring & Pinion Setup Tool we needed. Vendor Part Number. Our custom-length driveshaft kits make it a breeze to get the perfect 67-72 C10 driveshaft length. Good luck finding one of these, however, as they are very popular among performance enthusiasts. It doesn't have to be hard, and we offer some tips to keep your car's finish in top shape. 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. The pinion nut needs to be torqued to 250 ft/lbs. 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. This is zero backlash. 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. We talked to a few of our in-house race experts about ways to make this racing season your best one yet! Loosen the right-side adjusting nut and tighten the left-side adjusting nut until the ring gear contacts the pinion without binding. With its superior strength and durability, you can count on your PYN10 pinion nut to remain securely in place for years of reliable service. Randy Bolig has been working on cars and has been involved in the hobby ever since he bought his first car when he was only 14 years old. The 12-bolt is generally considered to be the stronger of the two rear axles. 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. Torque Specs on Dana 60. Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. Once you have obtained your desired setting, it is important to apply preload while rotating the pinion in order to ensure proper engagement with its mating components. Used bearings 10 to 14 inch pounds. 3/8" T-bolt - 30 ft lbs. Furthermore, this action reflects positively on the company's overall commitment to providing reliable transportation services while ensuring its customers' safety remains paramount at all times. 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. If it checks out you can put your axles back in, C clips on, cross pin and bolt and you are ready to put the cover on and fill it with rear end lube! 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. Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. How Much Hp Can Stock 5.3 Injectors Handle, What Kind Of Gas Does A Jeep Cherokee Take, Popping Noise When Accelerating And Braking. First I measured the old crush sleeve as a starting point. Tighten to 8 ft-lbs (10 N-m), then tighten an additional 1/3 turn to at least 37 ft-lbs (50 N-M). If you locate a rearend that has coil spring perches, it could be from a G, A, B-body, or El Camino. Nov 18, 2016. Furthermore, this process helps improve performance by increasing load capacity due to preventing misalignment caused by environmental factors such as vibration or thermal expansion of parts over time; additionally it also allows for smoother operation with less noise generation compared to regular ball bearings with their built-in clearances leading ultimately to higher durability rates since theres less overall wear and tear on individual components throughout long term use. This 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. 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. In either case, it is important that this critical adjustment be performed correctly in order to avoid costly repairs or replacements down the line. We'll send you the most interesting Chevy Hardcore articles, news, car features, and videos every week. Since listing them all within this article is impossible, well be focusing only on visual identification. tighten the nut down till its snug and put on your torque wrench and turn it about 3 revolutions. Chrysler 300 and Dodge Charger 2006-2008 Torque Specifications Repair Guide. Choosing a higher ratio will provide more power and torque for pulling heavier loads or navigating steep grades with ease, while lower gears are better suited for those tackling long stretches of open highway or cruising around town at slower speeds. I am also replacing all the bearings on my son's 97 Chevy rear end. 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. FSM says 181-325 ft-lbs. In addition, if a crush sleeve is over-crushed during installation then it must be discarded and replaced with a new one as it will no longer be able to provide the necessary level of tension between the bearings for them to function properly. What is the gear ratio on a 10 bolt rear end? Connecting Rod Cap Nuts 38. 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. I have a 2001 2500 HD. 2429 Mercantile Drive Suite A A forum community dedicated to GMC and Chevy full size owners and enthusiasts. At West Coast Differentials we are committed to making your experience with us totally enjoyable. Maintaining your car's paint finish is essential to keep it looking great. That does not describe how tight the pinion nut needs to be however. grade 8. 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. The ideal amount of torque required on a pinion nut when installing an axle depends on many factors, but typically you should aim for 110-125 ft/lbs of torque unless otherwise specified by step #6 during the installation process. Camshaft thrust Plate bolts 106 in-lbs. :yipi: Thats it?? This website uses cookies or similar technologies to enhance your browsing experience. FORD: .020. I used an 1/4" inch-lb torque wrench with two adapters and a 1 1/16" socket to check the preload. When compressing the crush sleeve, many guys use an impact wrench and end up crushing it too far, ruining the sleeve. 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. When it comes to Chevrolet rearends, its the 12-bolt that seems to get all the accolades. With the carrier removed w/ new bearings pinion bearing preload should measure a rolling torque of 20-30 in/lbs. Doing a gear ratio change but not sure what you want? Are all GM 10 bolts the same? 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. . Replace original worn or damaged nuts each time a gear set is changed. 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. 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. EDLANTA there is a "crush" spacer between the two pinion bearings that when tightened properly gives you the proper bearing preload.
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