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. Next we disassembled everything, starting with the cross pin bolt, cross pin and C clips. For reference use at own risk. They say ignorance is bliss but I say it's just damn expensive. This heavy-duty nut is made with high quality materials and manufactured to exacting standards, ensuring it stands up to whatever you throw at it. With the pinion bearing properly lubricated, increase or decrease . It was used in different models by all GM divisions with the exception of Cadillac. If you find a rearend that uses a large spring perch like this, it is from either an X or F-Body. Mikz86TA. Im gonna go buy a good manual for shit like this. Sie Bear Caps FT. LBS; AMC 20 An important step I like to take is to assemble the pinion and differential case without the crush sleeve or the new pinion nut. The pinion on the left is part of a 4.11:1 gear set; the one on the right is a 3.08:1 pinion. Call 800.979.0122, 7am-10pm, everyday. The 8.5-inch 10-bolt rearend was used in cars and trucks over a wide range of years. 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. 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. 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 . If youre looking for a good.economical 10-bolt rearend to rebuild or install into your hot rod, you will need to be able to accurately identify thedifferent units so you dont accidentally come home with a 7.5 or 8.2-inch differential. We look forward to serving you! Pinion preload (used bearings): 8 - 10 in*lb. Thanks Mike, Id appreciate it. Finding a 12-bolt that is affordable, is getting to be anearly impossible endeavor. 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. If your mom is lunch, then yes, I've eaten lunch twice today. Tighten to 8 ft-lbs (10 N-m), then tighten an additional 1/3 turn to at least 37 ft-lbs (50 N-M). For that reason,many enthusiasts are considering the 10-bolt. 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. . grade 8. 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. Like all Chevy 10-bolts, the axles are retained by C-clips on the inner end of the axle shaft inside the carrier. 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. The pinion nut is a 32mm or 1 1/4" so you need a socket and adapters for that. This is zero backlash. Jul 2, 2020 / 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! Upon initial . 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. See other Red Line Oil Products that we recommend. 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 . What is the torque specs on pinion nut? 3/8" x all lengths 45-50 ft lb. 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. We'll send you the most interesting Chevy Hardcore articles, news, car features, and videos every week. 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. Automotive Chassis Torque Specs. 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. 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. to do this. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. The retaining bolt can be hard enough to get out without using the red high strength Lock Tight on it. 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. 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. 1989 Toyota Pickup/3vze/R150F/Dual RF1A's/8.0 Detroit/8.0 Detroit/5" SAS/38 TSL'S. Once properly secured in place, you should have no further issues with your pinion nut installation. Unfortunately, unless you have the two units side by side, it is nearly impossible to tell them apart. What size is pinion nut Silverado? 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. 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. These are considered highway gears that are good for top speed, not for off-the-line performance. Too much won't hurt anything other than break the bolt. This sleeve must be replaced every time the pinion nut is torqued. 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. West Coast Differentials has been distributing quality differential and axle parts since 1982. Instead of using a C-clip to hold the axle in the housing, these axle assemblies use bolt-in axles, much like an 8.2 BOP rearend. Additionally, its unique thread pattern provides torque retention while eliminating any possibility of loosening or vibrating off over time due to vibration or shock loads. Now that we know our pinion depth shim is correct we can do the final assembly. That being said, limited gear sets are offered for the carriers, especially if you plan to change gear ratios. Ring Gear Bolt Torque (Foot lbs) (N.m.) Bearing Cap Torque (Foot lbs) (N.m.) AMC; Model 15 : 20 - 40 (2.3 - 4.5 ) . Connecting Rod Cap Nuts 38. Zone 1.5 BL, 22x12s, California delete, Detroit TrueTrac, etc. If the backlash is too tight, you'll need adjust the carrier shim by moving it away from the pinion. Gear oil is nasty stuff, mostly in smell. 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. Tightening Torque Clamp Load Determining the correct flexplate for your V8 Mopar-powered project takes a little understanding of how these engines were balanced. . 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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. 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. 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. on old bearings. We were lucky and had a desirable contact pattern on both the drive and coast sides of the gear teeth. Sometimes when repairing or replacing components within a transmission, you may encounter a crush sleeve. 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. 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. for new bearings. If it takes a 5/16-inch wrench to remove it, its an 8.5. 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. Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. 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. Pinion Bearing Preload (New) (inch/lbs) Pinion Bearing Preload (Used) (inch/lbs) Backlash (.001 in) Ring Gear Bolt Torque (Foot lbs.) Recently a friend enlisted me to help rebuild his 7.5 GM 10 bolt. Locate a Sierra Gear & Axle Distributor near you. In either case, it is important that this critical adjustment be performed correctly in order to avoid costly repairs or replacements down the line. 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. FOR 1994-2001 CHEVY S10's & GMC SONOMA's. **ALL TORQUE SPECS ARE PER GM FACTORY & HAYNES MANUAL**. Set the preload carefully (see "Set Up Specifications") so that the bearings will have a long life. Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. PINION NUT GM 7.5 8.5. The torque required to seat the nut is very large, possible 200 ft-lbs or more. Good luck finding one of these, however, as they are very popular among performance enthusiasts. PINION PRELOAD NEW INCH LBS. 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. 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. To ensure optimal performance in any application, it is essential to pay close attention to the amount of backlash between gears on all differentials. Come join the discussion about Silverados, Sierras, and other full size trucks performance, modifications, suspension, lift kits, tires, maintenance, and more! GM 8.5" 10 Bolt / Ring & Pinion Gear Set w/ Master Bearing . 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. 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. Vendor Part Number. Since listing them all within this article is impossible, well be focusing only on visual identification. 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.) 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. When installing a new 8.5-inch 10-bolt rear differential, it is important to use the right pinion nut for your application. Max Ellery's Land Cruiser Repair Manual 1969-1990 (FJ & RJ) From there I make very minute changes, checking the pre load with the inch lb torque wrench several times. 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. It's essential that you use enough force while tightening down the pinion nut so that your component will stay securely attached; however, it's equally important not to over-torque the part, which could cause permanent damage or deformation. on new bearings, or 1.2 Nm (10 inch lbs.) Typically, 10-bolt differentials are specific to a series of gears. 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. A 2.6-3.0 gear ratio range is perfect for flat places and most people find this ratio suitable for their needs. 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. Camshaft thrust Plate bolts 106 in-lbs. 1/2" x all lengths 100-110 ft lb. You have to do it a little differently though. To do this, measure 10 thousandths of an inch on the shim and shift it accordingly. 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. 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. If the nut is loose then the crush sleeve must be changed. Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. Our LS swap adapter kits make it easy! I need the torque on the pinion nut for the rear differential. Step 3: Back off 3/8-turn for automatic hubs, and just enough to free the bearing for manual hubs. Our custom-length driveshaft kits make it a breeze to get the perfect 67-72 C10 driveshaft length. 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. For the fastest service, call our Differential Parts Experts at (800) 510-0950 for immediate assistance. While backlash is a necessary component of manufacturing tolerances, it can be a significant source of problems for certain applications. If too tight, the bearings become overstressed and will fail prematurely, causing a catastrophic failure of both the ring and pinion gears. (note make sure the pinion bearing is well oiled when doing this procedure.) It doesn't have to be hard, and we offer some tips to keep your car's finish in top shape. Would this be the same How to write up for my truck? BACK LASH 0.000". The engine roars and the tires dig into the pavement as they work to move your car forward, pushing you back into your seat with tremendous force. By following these steps carefully and precisely, you can ensure that your gear and carrier are set up correctly for optimal performance. First mark the position of the nut with a chisel or other method so you can tighten it back to exactly the same place. ALL72156. 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 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. The more torque produced, the less energy needed to move the car forward. sny 00235 converted 8-10 ft lbs: None: None: GM 12 Bolt Car: Torque: Lubricant: Thread Locker: Main Caps: OEM Housing: . 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. Not only was the 10-bolt assembly used in low performance applications, but it was also utilized in a variety of different vehicles ranging from Camaros, Chevelles and Impalas to even the earlier Chevy IIs. The 8.5-inch and 8.6-inch 10-bolt rears are stout and effective differentials that can handle more power than either the 7.5 or 8.2-inch rears. By reducing the amount of free play between components, preloaded bearings can provide greater accuracy and quieter operation than standard ball bearings with clearances. Mine was a pita. Originally, gear ratios ranged from 2.41 through 4.10. 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. 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. 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. Back off left-side adjusting nut approximately 2 slots. does anyone know the torque specs for a 10 bolt 7.5 for the pinion and carrier caps . Use oil on the pinion nut washer surface during all assemblies . 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. Rancho Cordova, CA 95742, Bearing Preload, Backlash and Torque Specifications. 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. You will need a torque meter in inch-lb. Currie 44 : Torque: Pinion Nut (Solid Spacer) 250 ft lbs. Inch pound torque wrench that will read that low of a number which will be "VERY" costly. So, when adjusting preload, if it is too loose then the shims should be removed. 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. This ensures all parts remain tightly fitted together without any space between them, resulting in increased stiffness as well as reduced friction within the system as a whole. MOPAR: 8.75" x 1.75" pinion: .090. . Nut secures driveshaft yoke to pinion gear. 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. This website uses cookies or similar technologies to enhance your browsing experience. Pin. I like to slowly tighten the new pinion nut until I take up all of the front to back free play. 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. I have a 2004 Chevy Silverado 1500, 4.8L engine, 4x4, single cab, 6' bed, what are the torque specs for the drive shaft bolts that bolt the drive shaft into the rear end yolk? Usually, when people are discussing gear ratios, theyre referring to the relationship between a pinion gear and a spur gear. Loosen the right-side adjusting nut and tighten the left-side adjusting nut until the ring gear contacts the pinion without binding. Cover Bolts: 25 ft lbs. 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. You tighten it until the bearing preload is correct. The pinion shaft diameter is 1.625 inches and will have either 28 or 30 splines. West Coast Differentials stocks a complete line of light duty axle parts for Chevrolet, Chrysler, Dana, Ford, GM, Jeep and Toyota and more! Axle Type Cover Bolts FT. LBS. Oct 20, 2011. 2008 Sprinter 2500 170 - camper van. These have been around since 1975, and were installedunder cars, small trucks, and vans up to the 2005 model year. 1988 C1500 Silverado, 5.7L with some go fast parts. You keep on tightening the pinion nut until you are within the in-lb. The Hex is 5/16 the threaded part is SAE 5/16 inch 18 threads per inch. I have seen street 12 bolts that . The X and F-body spring perches come in two versions: mono-leaf (left) which is shallower than the multi-leaf (right). 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. GM 8.6" differentials can be installed in a GM 8.5" axle with the proper conversion bearings. I used an 18" breaker bar with a 2 foot pipe on the end of it in order . Ring gear bolts 65 foot pounds, bearing cap bolts 60 foot pounds. This means that turning the pedals at the front will turn the back wheel 4.55 times over, which requires quite a bit of effort but allows for fast movement once achieved. The first is to use a crush collar; this involves applying pressure between the yoke and cup until it reaches the desired depth. 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. 3. remove yoke from splines. Once the specified preload has been obtained, make sure the bearings are seated by rotating the pinion several times. 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. Read More. This is all with the old crush sleeve. The rear end is full of 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. 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. Zach got enlisted by a friend to help rebuild the 7.5" factory 10 Bolt rear in the G-Body Monte that he is working on, so naturally it became a teaching moment. Tighten nut until it takes 15-20 inch lbs of torque to rotate the pinion bearings: None: Self Locking Nut . I don't use it on the bearing cap bolts. It's not easy, but pushing yourself can be rewarding; after all, with hard work come great rewards! May 22, 2021 / It is internally different from the 8.2 Chevy, but has the same external bosses and brackets. . tighten the nut down till its snug and put on your torque wrench and turn it about 3 revolutions. carrier bearings, races, crush sleeve, pinion nut, pinion seal, a gasket and even has the gear marking grease included. The 8.5 rearend will have a round cover, and part of the cover will extend rearward to make room for the ring gear. Race-spec ring and pinion gears for desert racing, rock bouncing, and rock . The date and location of manufacture coding changed in 1971. 3/8" T-bolt - 30 ft lbs. 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. When changing a ring & pinion and doing final install of pinion there is no torque spec on the pinion nut itself. ExtCab96S_Dime . Search Car Torque Specifications by Engine or Model This is especially true when it comes to cycling. Some of the most popular GM vehicles have come with 10-bolt rear ends. The pinion nut should then be secured and tightened until there is no bearing play at all. . Call 800.979.0122, 7am-10pm, everyday. 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. This is a metal spacer, usually made of brass or aluminum, that is used to put tension between the bearings in order to keep them properly spaced and aligned. With the carrier removed w/ new bearings pinion bearing preload should measure a rolling torque of 20-30 in/lbs. It is therefore important to strike a balance by carefully adjusting the backlash so that it meets manufacturer requirements for that particular differential system. With its superior strength and durability, you can count on your PYN10 pinion nut to remain securely in place for years of reliable service. Step 2: Back off, then torque to 35 (lb-ft) for automatic hubs,or 50 (lb-ft) for manual hubs. Not only is this a wise financial decision for both parties involved, but it also shows how much Chevrolet values customer satisfaction and safety. RING GEAR TORQUE FOOR LBS. As well as many other third member torque specs from Strange. Is a GM 10 bolt rear end good? Is a GM 10 bolt rear end good? (Note: The 7.5 GM rear used different pinion bearings in 1979-80 vs. the 81-up axles, so you want to make sure that the old bearings match up to your new pinion bearings). We think top-notch customer service is the most important thing we do. There are other 14b axles out there - a 9.5" ring gear semi-float for one, and even a 11.5 . I thought the pinion nut would be more like 50-75 FOOT pounds? All of the parts we sell are also used every day in our busy service shop. It refers to how much tension is applied to the spring before it's installed in the vehicle and can be adjusted accordingly. 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. Like the 8.2-inch 10-bolt, the 8.5 10-bolts use C-clips to retain the axles. 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. Pinion Nut (Solid Spacer) 28-Spline Pinion - 200 ft lbs. The PYN10 pinion nut has been specifically designed to fit 30 spline pinions and provide a secure fit and lasting performance. ALL72156. Many mechanics use an impact gun while others insist the nut should be torqued by hand. When riding a bicycle, the hardest gear available is sometimes necessary for tackling steep climbs and flats alike. increments until rotating torque is achieved. 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.