When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Or some do it by feel. Determining the correct flexplate for your V8 Mopar-powered project takes a little understanding of how these engines were balanced. Both axles use a third member that contains the differential, which is made up of the . To begin, the yoke or coupler must be attached to the pinion shaft. Torque is a measure of rotational force that must be applied in order to secure components such as axles and other parts together. Here are the thin shims from the Summit crush sleeve eliminator. Products include ring and pinion sets, installation kits and axle shafts for GM, Ford, Chrysler, Jeep, and Toyota vehicles. . Known alternatively as the GM 8.875-inch (referring to its ring gear diameter), Chevrolet's 12-bolt rear end is one of the most celebrated in the American hot-rodding scene. range. 2/3 drop, HP Tuned, Built 60e, 4.10s, Yukon Duragrip, etc. Well help you determine the correct flexplate for your Chevy engine in this buyers guide. It has to be drained to get a peak inside. 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. Rancho Cordova, CA 95742, Bearing Preload, Backlash and Torque Specifications. Currie 44 : Torque: Pinion Nut (Solid Spacer) 250 ft lbs. Check the pinion preload by rotating the pinion with a torque wrench. This one is not as easy as it sounds. On the other hand, if the preload is set too loose it can cause a whining noise to originate from within the rear end as well as abnormal gear wear due to excessive movement between the two components - eventually leading to failure. His passion for performance got him noticed by many locals, and he began helping them modify their vehicles. Sierra Gear & Axle is a premium line of light-duty differential parts. 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. 9 Minutes Read /
Since it was so widely used, there is a better possibility of finding one of them at a salvage yard thanlocating a 12-bolt. 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! Sometimes, you need to push yourself. If the nut is loose then the crush sleeve must be changed. Additionally, this nut features a thread pitch of 11/16 x 20 which allows for easy removal during maintenance periods or when replacing bearings or other components within your axle assembly. 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. These protrusions are larger than those on the 7.5 rearend. Shop Differential Pinion Bearing Spacers and Sleeves at Summit Racing. How to eliminate unwanted to holes in your car's body, trunk, floor, or firewall with easy to use patch plugs from Speedway Motors. Oct 20, 2011. 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. With one nut per package and a 7/8-16 thread size, this pinion nut is made from strong steel and has a sleek black finish for a nice look. Pinion nut torque (shimmed preload style): 250 ft*lb. Pinion Nut Torque Spec. Ring Gear Backlash Ring Gear Bolts to Cast FT. LBS. These are considered highway gears that are good for top speed, not for off-the-line performance. 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. 8-11 in/lbs for broken in bearings is acceptable. Oct 29, 2001. See other Red Line Oil Products that we recommend. That way, you dont unknowingly spend money on something you really do not want. Pinion preload (new bearings): 17 - 30 in*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. :yipi: Thats it?? VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Ring and Pinion Ratio Variations - An explanation of why some ring and pinion gear ratios vary. I like to slowly tighten the new pinion nut until I take up all of the front to back free play. Received 16 Likes on 13 Posts. Ultimately, both engine power and torque play important roles in determining a cars performance capability as well as its overall efficiency. While backlash is a necessary component of manufacturing tolerances, it can be a significant source of problems for certain applications. 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. BACK LASH 0.000". When you purchase through links on our site, we may earn an affiliate commission, which supports our community. What size is pinion nut Silverado? Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. However, the gears will not interchange with a Chevy 8.2. Use oil on the pinion nut washer surface during all assemblies . Locate a Sierra Gear & Axle Distributor near you. GM 10 Bolt 8.2; GM 10 Bolt 8.5; GM 12 Bolt 8.875; GM 8.6 IRS; GM Install Kits; MOPAR. If you are installing an axle and need to know the torque specs, it is important to first understand what torque is. Step 1: To seat, torque nut to 50 (lb-ft) while spinning hub. This website uses cookies or similar technologies to enhance your browsing experience. This will cause the bearings to press more firmly against the races, thereby increasing preload tension. The 8.5-inch 10-bolt also shares the same pinion shaft diameter as the more expensive 12-bolt. 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. 2.2L FOUR CYLINDER ENGINE: Camshaft sprocket bolt 96. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Looking for a driveshaft for your 67-72 C10? The Fora platform includes forum software by XenForo. .006" to .010" 120 ft-lbs. I like to measure the old crush sleeve and machine down a solid pinion spacer to that dimension and then . 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 8.5-inch pinion diameter is 1.625 inches, whereas the 8.2-inch is smaller at 1.435 inches. The small torque . Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. By Albert. As well as many other third member torque specs from Strange. Would this be the same How to write up for my truck? Search Car Torque Specifications by Engine or Model 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. 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. This will help ensure that there isn't an excess of tension on these components, which can lead to premature wear or even failure. The following are recommended Differential Set-Up Specifications for various differentials. The Hex is 5/16 the threaded part is SAE 5/16 inch 18 threads per inch. Mgrotel, nice cliff notes. 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. The concept of low-end torque is an important one for drivers to understand when it comes to the performance of a vehicle. 1/2" x all lengths 100-110 ft lb. This strength comes from its larger pinion shaft diameter which measures 1.625 inches with 30 splines, 13 percent larger than the 1.438 inch diameter and 25 spline pinion shaft found on a 10-bolt axle. For the fastest service, call our Differential Parts Experts at (800) 510-0950 for immediate assistance. If you're looking to get the most out of your pickup truck, you may want to consider changing the gear ratios. Constructed from high quality steel, the PYN10 features an integral washer design that ensures proper alignment of the bearing preload during installation and prevents damage to both the yoke and bearings. It refers to how much tension is applied to the spring before it's installed in the vehicle and can be adjusted accordingly. 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. When riding a bicycle, the hardest gear available is sometimes necessary for tackling steep climbs and flats alike. 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. While this article focuses specifically on the GM 8.5 10-bolt rear differential, the parts and processes described herein cover most differential housings.Built from the 1970s through today (the 8.6" 10-bolt is still used in most GM . When installing a new 8.5-inch 10-bolt rear differential, it is important to use the right pinion nut for your application. 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. Ring Gear Diameter: 8.500Cover Bolts: 10Ring Gear Bolts: 10Ax . A Series 2 carrierwill work with 2.56 and higher gears (numerically lower) such as 2.41. 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. 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. If a bearing system is designed to have no clearance, then preloading is necessary. Its strength and reliability have been proven time again, making it an excellent option for drivers looking for reliable performance from their vehicle. I need the torque on the pinion nut for the rear differential. Part Number. All 8.6-inchrears have disc brakes, and 8.5-inch units have drum brakes. BOP stands for Buick/Oldsmobile/Pontiac. If sticky tires are used, youll quickly turn the 7.5-inch rear into a pile of unusable parts. Differential Locker Comparison - A detailed comparison of popular differentials and lockers. Before disassembly, we marked the bearing caps and kept the side bearing shims on the correct side. How a GM 10-Bolt Differential Goes Bad. 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. Our custom-length driveshaft kits make it a breeze to get the perfect 67-72 C10 driveshaft length. The carrier bearing rides in the races and you will snap the bolt off before you warp or crack the races. 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. Pin. 12 Bolt Rear Axle Torque Specs. Currie 60/70 : Torque . Data is accurate to the best of our knowledge and is offered as-is with no guarantee. We'll send you the most interesting Chevy Hardcore articles, news, car features, and videos every week. MODEL 20. Ring and Pinion Gear Tooth Patterns - Gear tooth pattern setup and adjustement instructions. If i missed any thing PLEASE tell me. For a better experience, please enable JavaScript in your browser before proceeding. That's all fine and dandy but my pinnion was chewing it's way through the carrier and now I can't get the passenger side c clip to drop out. Step 2: Back off, then torque to 35 (lb-ft) for automatic hubs,or 50 (lb-ft) for manual hubs. 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. Axle Retainer Plate Nuts: 3/8" T-bolts - 30 ft lbs. As a result, this construction became one of the most popular axle assemblies on the market due to its durability and affordability. 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. Follow along as our employee Zach installs a GM 10 bolt rebuild kit from Motive Gear. 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. The 8.5-inch 10-bolt rearend is hugely popular because aftermarket carriers and gears are easily interchangeable. Unfortunately, you cannot rely on this torque because the crush sleeve provides unpredictable and non-linear resistance as it buckles and crushes. Then use lock-tight on the threads and tighten the nut back to where it was. The more torque produced, the less energy needed to move the car forward. 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. Some builders . Follow along as Zach works over the old 10 bolt and brings it back to life. 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. with an impact. The torque required to seat the nut is very large, possible 200 ft-lbs or more. How involved is the process of changing it? This is done in order to decrease pre-load on the bearings; adding more shims will have an overall effect of decreasing it. on old bearings. 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. JavaScript is disabled. 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. ALL72156. GM: .035. In either case, it is important that this critical adjustment be performed correctly in order to avoid costly repairs or replacements down the line. to do this. There are other 14b axles out there - a 9.5" ring gear semi-float for one, and even a 11.5 . We pressed the new bearings onto the carrier and the front pinion bearing and went ahead and put the assembly together into the housing. 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.) 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. 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. 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. We were lucky and had a desirable contact pattern on both the drive and coast sides of the gear teeth. 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. 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 . It is important to follow the instructions that came with your differential cover, as torque specifications can vary drastically depending on the material and grade of fastener used as well as the material of the diff cover itself. GM 8.6" gears will fit GM 8.5" axles and as such have become the universal aftermarket size for both. 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. 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. Mine was a pita. Mikz86TA. How tight should a pinion nut be? So, when adjusting preload, if it is too loose then the shims should be removed. All rights reserved. Tightening Torque Clamp Load (lbs.) Like the 8.2-inch 10-bolt, the 8.5 10-bolts use C-clips to retain the axles. By following these steps carefully and precisely, you can ensure that your gear and carrier are set up correctly for optimal performance. 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! 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. 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. 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. The OEM pinion nut is 1 1/4 inches. I have seen street 12 bolts that . I got the price for the seal, and it is near $9. This tension is achieved through a collapsible spacer which is placed between the bearings and then compressed by turning the pinion gear nut. 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. FSM says 181-325 ft-lbs. 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 rear end is full of it. 1/2" T-bolts - 50 ft lbs. 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. I have been taking it to ~250-300 ft lbs. PINION PRELOAD NEW INCH LBS. MOPAR: 8.75" x 1.75" pinion: .090. . 4.replace seal. minimum is 181 ft-lbs., maximum 325 ft-lbs., keep cranking till you get within the range of 7.8-11.3 in-lbs of preload torque on the pinion. 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. 6 TO 10. It was first developed for racing cars where superior control on fast corners is essential for success; however, today torque vectoring differentials can be found in many production vehicles as well due to their exceptional performance benefits. Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. 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. Our LS swap adapter kits make it easy! 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. 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. 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. FORD: .020. Alternate Description. does anyone know the torque specs for a 10 bolt 7.5 for the pinion and carrier caps . Install left-side adjusting nut lock, washer, and bolt. It also uses a 10 5/8-inch irregular-shaped cover. Not sure what to do here but I know I'm looking at a boat load of parts I do not have the money for right now so not sure what the hell I'm going to do. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. 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. Edit: The torque it takes to crush . It is essential to ensure that the pinion flange is firmly held in place with a fixture or tool. Final torque on the pinion nut is necessary to compress the crush sleeve. 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. The date and location of manufacture coding changed in 1971. Crankshaft Main Bearing Cap Bolts 70. 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. Speedway also offers the Economy Ring & Pinion Setup Tool we needed. GM 8.5 10 bolt - 10 bolt cover with 8.5 ring gear. The PYN10 pinion nut has been specifically designed to fit 30 spline pinions and provide a secure fit and lasting performance. 24-32 INCH pounds?? 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 . Rotating torque should be equal to the reading recorded during removal plus an additional 0.56 Nm (5 inch lbs.). Doing a gear ratio change but not sure what you want? You can rest assured knowing that your axle is secured with this high quality product. 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 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. When I changed all the bearings in my suburban rear end, I bought the crush sleeve eliminator shims from Summit. 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. There is a difference, but you cant see it unless you set both units on their side, and then measure the distance from that surface to the face where the ring gear attaches. While deciding on the ideal gear ratio for your bike, it's important to consider that a lower value will provide more comfortable pedaling, as you'll be able to spin the pedals at a higher cadence. Many times, if you locate a 10-bolt rearend, its usually a 7.5-inch unit. The retaining bolt can be hard enough to get out without using the red high strength Lock Tight on it.