You can feel the power of all that torque in your bones as it propels the car forward even faster than before. It is essential to ensure that the pinion flange is firmly held in place with a fixture or tool. These have been around since 1975, and were installedunder cars, small trucks, and vans up to the 2005 model year. The pinion nut needs to be torqued to 250 ft/lbs. When riding a bicycle, the hardest gear available is sometimes necessary for tackling steep climbs and flats alike. 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. Our Mopar flexplate buyers guide will help. By Albert. Build your own custom newsletter with the content you love from Chevy Hardcore, directly to your inbox, absolutely FREE! Connecting Rod Cap Nuts 38. 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. 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. This should result in approximately 7 thousandths of an inch adjustment in terms of backlash. This method works every time is done precisely as described. 1/2" T-bolts - 50 ft lbs. The unique design and shape make installation easier while providing ample strength for off-road applications. 2. unbolt pinion nut. .006" to .010" 120 ft-lbs. How involved is the process of changing it? 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. As an added reference, Speedway Motors also offers a great book from CarTech, titled "High-Performance Differentials, Axles & Drivelines" that helps with step by step breakdowns of the process. That being said, it isnot recommended for use behind engines that make a serious amount ofhorsepower. Axle Type Cover Bolts FT. LBS. Currie 44 : Torque: Pinion Nut (Solid Spacer) 250 ft lbs. If too tight, the bearings become overstressed and will fail prematurely, causing a catastrophic failure of both the ring and pinion gears. This difference can cause issues with accuracy and repeatability in some applications, necessitating either higher-end components or additional compensation mechanisms. To reach an accurate level of tension or preload, experience and expertise are usually required when dealing with this type of repair work. 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. Pin. Ford 9 inch Torque Specs for Ford 9 inch center Section torque specs. . Over 6,000 Automotive Torque Specs. I need the torque on the pinion nut for the rear differential. Once properly secured in place, you should have no further issues with your pinion nut installation. tighten the nut down till its snug and put on your torque wrench and turn it about 3 revolutions. Oct 20, 2011. . One intimidating part for a lot of guys is the rear end. As well as many other third member torque specs from Strange. We will safeguard your e-mail and only send content you request. This article is a compilation of information and and specs relating to the venerable GM Corporate 14 Bolt full-floating rear axle - also referred to as the 10.5" (after the size of the ring gear in inches) or just simply the "14b" for short. Edit: The distance between the lower center bolt on the cover and either adjacent bolt is 3 3/4 inches. From there I make very minute changes, checking the pre load with the inch lb torque wrench several times. 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. We'll send you the most interesting Chevy Hardcore articles, news, car features, and videos every week. Call 800.979.0122, 7am-10pm, everyday. Good luck finding one of these, however, as they are very popular among performance enthusiasts. 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. Dana Technical Service Specs. Fords small block and big block engine families have their share of flexplate differences. Ultimately, both engine power and torque play important roles in determining a cars performance capability as well as its overall efficiency. The Fora platform includes forum software by XenForo. Talk to the experts. If you find a rearend that uses a large spring perch like this, it is from either an X or F-Body. The trick is to get it tight as possible without crushing the sleeve any more then it already is crushed. Free Shipping - Yukon Gear & Axle Crush Sleeve Eliminator Kits with qualifying orders of $99. Data is accurate to the best of our knowledge and is offered as-is with no guarantee. 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. 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. 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. Sometimes when repairing or replacing components within a transmission, you may encounter a crush sleeve. . 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. 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. The Hex is 5/16 the threaded part is SAE 5/16 inch 18 threads per inch. The Fora platform includes forum software by XenForo. Unfortunately, you cannot rely on this torque because the crush sleeve provides unpredictable and non-linear resistance as it buckles and crushes. Come join the discussion about performance, lift kits, wheels, tires, modifications, troubleshooting, maintenance, and more! Torque measures the amount of force that is generated when the engine rotates at a certain speed. Both axles use a third member that contains the differential, which is made up of the . Mikz86TA. 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. 1988 C1500 Silverado, 5.7L with some go fast parts. This technology is particularly advantageous in improving vehicle handling and traction under all types of driving conditions, from wet roadways to tight turns. The 8.5-inch 10-bolt rearend is hugely popular because aftermarket carriers and gears are easily interchangeable. increments until rotating torque is achieved. 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. for a ten bolt rear it should be about 20 inch pounds while you are turning the torque wrench. It is internally different from the 8.2 Chevy, but has the same external bosses and brackets. It saved me time and effort trying to crush a brand new crush sleeve. 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. to do this. What happens if you have too much backlash in differential. Sometimes strength is an important factor when choosing between components, and this is true with the 10-bolt and 12-bolt rearends. For that reason,many enthusiasts are considering the 10-bolt. This allows you to put the pinion gear in, set the pinion bearing pre-load, set the backlash and then run a contact pattern without the chance of compressing the crush sleeve too much. Products include ring and pinion sets, installation kits and axle shafts for GM, Ford, Chrysler, Jeep, and Toyota vehicles. Speedway Motors employees enjoy not only helping our customers, but also turning some wrenches in their downtime as well. Some vehicles require an 8.5" 10-bolt pinion nut to secure the rear axle assembly of their vehicle. 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. 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. Its strength and reliability have been proven time again, making it an excellent option for drivers looking for reliable performance from their vehicle. First I measured the old crush sleeve as a starting point. FSM says 181-325 ft-lbs. Axle Retainer Plate Nuts: 3/8" Grade 8 - 45 ft lbs. Tighten bolt to 20 ft/lbs. 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. . 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. West Coast Differentials stocks a complete line of light duty axle parts for Chevrolet, Chrysler, Dana, Ford, GM, Jeep and Toyota and more! Products include ring and pinion sets, installation kits and axle shafts for GM, Ford, Chrysler, Jeep, and Toyota vehicles. 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. Dana 60. 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. 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. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. Original gear ratios in pickups can range from 2.41:1 all the way up to 4.10:1, offering a wide variety of options depending on your needs and preferences. When working on the assembly of a differential, there are two methods for adjusting the pinion depth. Some builders . 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 . These basic steps should pertain to most GM rear differentials and if followed with leave you satisfied for many miles. This results in improved performance, longer life span and more efficient operation of the system. Chevy Hardcore NEWSLETTER - SIGN UP FREE! Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. Inch pound torque wrench that will read that low of a number which will be "VERY" costly. That being said, limited gear sets are offered for the carriers, especially if you plan to change gear ratios. The pinion diameter is 1.438 inches, and has 25 splines. To install your ring and pinion gears and/or differential correctly, it is critical to torque your bolts and set your preload and backlash correctly. Recently a friend enlisted me to help rebuild his 7.5 GM 10 bolt. The pinion diameter is 1.438 inches, and has 25 splines. 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. for new bearings. This gives us confidence in the quality of the parts we sell. Most 8.2 factory covers also have the strangeprotrusionat the top. Ring Gear Bolt Torque (Foot lbs) (N.m.) Bearing Cap Torque (Foot lbs) (N.m.) AMC; Model 15 : 20 - 40 (2.3 - 4.5 ) . There are a few that have geared axles on here so they should chime in and help out with Real TECH :rocking: Reply Quote. 14 bolts and 10 bolts are different, not sure about changing seals though. 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. Currie 60/70 : Torque . It also uses a 10 5/8-inch irregular-shaped cover. There were an untold number of 8.2-inch axle assemblies built, and although it is only marginally stronger than the 7.5-inch rearend, it does have some aftermarket support. Crankshaft Pulley to Hub Bolts 37. Find the torque thats on it before hand and tighten it down to that afterwards. Ring Gear Backlash Ring Gear Bolts to Cast FT. LBS. What is the gear ratio on a 10 bolt rear end? May 22, 2021 / Many mechanics use an impact gun while others insist the nut should be torqued by hand. Not only is this a wise financial decision for both parties involved, but it also shows how much Chevrolet values customer satisfaction and safety. Crankshaft Main Bearing Cap Bolts 70. It also uses a 10 5/8-inch irregular-shaped cover. 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. . Continue tightening the pinion nut to collapse the spacer and preload the bearings. The reliability of the axle tube and . 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! lbs.) without any detrimental effects occurring. CHECK FREQUENTLY as you progressivley tighten the pinion nut. 4.replace seal. 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. 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. 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. 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. With its strong construction and corrosion resistant coating, the PYN10 provides reliable performance for years to come, making it one of the best choices you can make when securing your vehicle's rear axle assembly. OEM bolts have thread locker on the threads. I have a 2001 2500 HD. 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. 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. 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 . It doesn't have to be hard, and we offer some tips to keep your car's finish in top shape. 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. 440-500 lbs ft and I wouldn't tackle it bring it somewhere where they know what they are doing..I have a four foot torque wrench that goes to 500 but thats one hell of a grunt and you have to hold the flange while doing this. 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. You can replace the pinion seal without changing the crush sleeve. Give us a try, we think you'll be glad you did! Here's a link to when I did mine. 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. checking the pre load with the inch lb torque . 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. lbs. How to eliminate unwanted to holes in your car's body, trunk, floor, or firewall with easy to use patch plugs from Speedway Motors. Step 1: To seat, torque nut to 50 (lb-ft) while . We pressed the new bearings onto the carrier and the front pinion bearing and went ahead and put the assembly together into the housing. Allstar Pinion Nut GM 7.5 8.5 ALL72156. By asking ourselves what makes us different than other companies, our answer is that we deliver the level of customer service that other companies only promise. 2008 Sprinter 2500 170 - camper van. When it comes to Chevrolet rearends, its the 12-bolt that seems to get all the accolades. Usually, when people are discussing gear ratios, theyre referring to the relationship between a pinion gear and a spur gear. The following are recommended Differential Set-Up Specifications for various differentials. Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. 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. 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. JavaScript is disabled. When the preload of the pinion bearings is incorrectly adjusted, it can have serious consequences. 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. However, the gears will not interchange with a Chevy 8.2. We think top-notch customer service is the most important thing we do. What size is pinion nut Silverado? FORD: .020. Find out how to access AutoZone's Torque Specifications Repair Guide for 300, 300C & Magnum 2006-2008, Charger 2006-2008. Save Share. 3/8" T-bolt - 30 ft lbs. 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 . For the fastest service, call our Differential Parts Experts at (800) 510-0950 for immediate assistance. 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. ExtCab96S_Dime . 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. Next remove the nut and change the seal. 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. Quaility Gears provide guaranteed performance. A 2.6-3.0 gear ratio range is perfect for flat places and most people find this ratio suitable for their needs. you have it pretty much. 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. Ring gear bolt torque: 110 ft*lb. 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. The correct way to do this is to use the yoke lock (part of the setup tool kit we bought) and use a breaker bar with a cheater pipe. 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. Many times, if you locate a 10-bolt rearend, its usually a 7.5-inch unit. 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. I like to measure the old crush sleeve and machine down a solid pinion spacer to that dimension and then . Axle Retainer Plate Nuts: 3/8" T-bolts - 30 ft lbs. It's got a 350 with a 10-bolt rear end. I used an 1/4" inch-lb torque wrench with two adapters and a 1 1/16" socket to check the preload. The 12-bolt is generally considered to be the stronger of the two rear axles. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Nov 18, 2016. Either way, the nut should be tightened to produce 24-32-in-lb of torque to turn the pinion . When changing a ring & pinion and doing final install of pinion there is no torque spec on the pinion nut itself. All rights reserved. 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. 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. Lifted78Chevy. Whilethe 10-bolt rearendslineage can be identified by the code stamps, which are usually on the passengers side axle tube, there are literally hundreds ofpotential codes for the three different 10-bolt rearend housings. BOP stands for Buick/Oldsmobile/Pontiac. The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. 1989 Toyota Pickup/3vze/R150F/Dual RF1A's/8.0 Detroit/8.0 Detroit/5" SAS/38 TSL'S. 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 . If you are installing an axle and need to know the torque specs, it is important to first understand what torque is. The carrier bearing rides in the races and you will snap the bolt off before you warp or crack the races. Sierra Gear & Axle is a premium line of light-duty differential parts. When compressing the crush sleeve, many guys use an impact wrench and end up crushing it too far, ruining the sleeve. 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. Not only does a torque vectoring differential perform the same basic tasks as a regular differential, but it also has an extra element that sets it apart: its ability to transfer torque between the left and right wheels independently. The torque it takes to crush . 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. 14 TO 19. 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. This will ensure that your backlash is correct without having to swap the shims. With this pinion nut, you can rest assured that your vehicle will be ready for whatever terrain comes its way! Sometimes, you need to push yourself. 12 Bolt Rear Axle Torque Specs. LBS. It was in the 30-35 I "think" from GM. Peter - I'm retired but work part time as a pain in the ass. 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. An 8.2 (shown) will have the same contour as the cover. The OEM pinion nut is 1 1/4 inches. So, when adjusting preload, if it is too loose then the shims should be removed. The easiest way to tell the difference is by looking at the brakes. 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. I like to slowly tighten the new pinion nut until I take up all of the front to back free play. 35-Spline Pinion - 250 ft lbs. #5. ft. What is the torque specs on pinion nut? Alternate Description. Just out of curiosity,what are the 8.5 (r 65lbft & c 60lbft ?) Follow along as our employee Zach installs a GM 10 bolt rebuild kit from Motive Gear. Take Zach R. for instance. Call 800.979.0122, 7am-10pm, everyday. 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. Automotive Chassis Torque Specs. Use Loctite #271 on the bolt threads and torque in a crisscross fashion to 55 ft-lb. Thick Gears and Carrier Breaks - Thick ring and pinion gears and differential carrier breaks explained. Loosen the right-side adjusting nut and tighten the left-side adjusting nut until the ring gear contacts the pinion without binding. 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. We show you how to keep that old GM transmission when swapping in an LS engine. Gear oil is nasty stuff, mostly in smell. The concept of low-end torque is an important one for drivers to understand when it comes to the performance of a vehicle. 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. You will need to know that there are different series of differentials (seriestwo and three). Received 16 Likes on 13 Posts. 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. 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. This sleeve must be replaced every time the pinion nut is torqued. 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. 9 Minutes Read / 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. Then use lock-tight on the threads and tighten the nut back to where it was. Tightening Torque Clamp Load Tightening Torque Clamp Load (lbs.) The X and F-body spring perches come in two versions: mono-leaf (left) which is shallower than the multi-leaf (right).

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