New bearings 19 to 22 inch pounds. 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. 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. Received 16 Likes on 13 Posts. It said you want this to be from 5-35. It also uses a 10 5/8-inch irregular-shaped cover. 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. Sierra Gear & Axle is a premium line of light-duty differential parts. Axle Images: Axle Details. Originally, gear ratios ranged from 2.41 through 4.10. But for all intents and purposes, the 10-bolt rearend is a great unit for a street/strip car, and can be stout enough to handle even the occasional abuse delivered by use at the racetrack. Mine is leaking. lbs.) 3/8" T-bolt - 30 ft lbs. The 8.2-inch 10-bolt has a smooth, round, lower-case area (no cast-in protrusions), with an 11-inch cover that has a diagonalprotrusion at the top. There are a few that have geared axles on here so they should chime in and help out with Real TECH :rocking: 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. 1989 GMC Suburban SLE 2500 4WD 5.7L Granny 4-speed. We'll send you the most interesting Chevy Hardcore articles, news, car features, and videos every week. .006" to .010" 120 ft-lbs. Find out how to access AutoZone's Torque Specifications Repair Guide for 300, 300C & Magnum 2006-2008, Charger 2006-2008. It has a black oxide finish that ensures corrosion resistance while its construction of hardened steel ensures durability even under extreme conditions. Nut secures driveshaft yoke to pinion gear. The Hex is 5/16 the threaded part is SAE 5/16 inch 18 threads per inch. Axle Order Form; Floater Axle Order Form; Custom Driveshaft Order Form; . When riding a bicycle, the hardest gear available is sometimes necessary for tackling steep climbs and flats alike. If sticky tires are used, youll quickly turn the 7.5-inch rear into a pile of unusable parts. The side bearing preload is the difference of preloads (5) x the gear ratio (3.73) = 18.65. I have been taking it to ~250-300 ft lbs. Some pinion nuts require a special procedure to be properly installed. 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. Give us a try, we think you'll be glad you did! 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. 2/3 drop, HP Tuned, Built 60e, 4.10s, Yukon Duragrip, etc. By reducing the amount of free play between components, preloaded bearings can provide greater accuracy and quieter operation than standard ball bearings with clearances. 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. 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. So, when adjusting preload, if it is too loose then the shims should be removed. Rotate the pinion when tightening the nut to seat the bearings evenly. 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. stock 4L60E on 5th filter/fluid change; 2nd set of drive shaft u . 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. Since it was so widely used, there is a better possibility of finding one of them at a salvage yard thanlocating a 12-bolt. 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. Sometimes when repairing or replacing components within a transmission, you may encounter a crush sleeve. Is that really all it takes? 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. This will ensure that your backlash is correct without having to swap the shims. Many mechanics use an impact gun while others insist the nut should be torqued by hand. You will also notice the large, flat, cast-in protrusions at thefive andseven oclock positions. does anyone know the torque specs for a 10 bolt 7.5 for the pinion and carrier caps . I have a 1993 Suburban K1500. Chevy Hardcore NEWSLETTER - SIGN UP FREE! Before disassembly, we marked the bearing caps and kept the side bearing shims on the correct side. Most 8.2 factory covers also have the strangeprotrusionat the top. Alternatively, shims can also be used to adjust the pinion depth. 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. For inquiries about our products and services, please fill out the form below. The retaining bolt can be hard enough to get out without using the red high strength Lock Tight on it. PINION NUT GM 7.5 8.5. GM 8.5 10 bolt - 10 bolt cover with 8.5 ring gear. Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. 6 TO 10. Differential cap bolt torque: 90 ft*lb. 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. OEM bolts have thread locker on the threads. Pin. The axle shafts are also held in place by four-bolt retainer plates at the outer bearing, not C-clips. There are other 14b axles out there - a 9.5" ring gear semi-float for one, and even a 11.5 . 12 Bolt Rear Axle Torque Specs. 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. To begin, the yoke or coupler must be attached to the pinion shaft. 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. The trick is to get it tight as possible without crushing the sleeve any more then it already is crushed. The number of teeth on each of these gears determines how much rotational force is converted into torque or speed. **Note the Pinion nut is in INCH pounds Ring Gear Bolts = 55 lb. What size is pinion nut Silverado? The 8.5-inch is often referred to as the "GM corporate 10-bolt" because of its multiple uses, and the 8.5-inch is a semi-float axle, meaning it has only one axle bearing per side, mounted inside the axle tube. It was in the 30-35 I "think" from GM. This one is not as easy as it sounds. The inch pound rating is the force required to turn the pinion after the crush sleeve has been crushed. If it takes a 1/2-inch wrench to remove it, its an 8.2. GM 8.5" 10 Bolt / Ring & Pinion Gear Set w/ Master Bearing . 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 . That being said, it isnot recommended for use behind engines that make a serious amount ofhorsepower. ALL72156. Too much won't hurt anything other than break the bolt. 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? Connecting Rod Cap Nuts 38. Call 800.979.0122, 7am-10pm, everyday. The 8.5-inch pinion diameter is 1.625 inches, whereas the 8.2-inch is smaller at 1.435 inches. Good info on this site from what I've seen so far, kudos. . Speedway also offers the . When changing a ring & pinion and doing final install of pinion there is no torque spec on the pinion nut itself. Once the specified preload has been obtained, make sure the bearings are seated by rotating the pinion several times. Thick Gears and Carrier Breaks - Thick ring and pinion gears and differential carrier breaks explained. If a bearing system is designed to have no clearance, then preloading is necessary. This is especially true when it comes to cycling. The 7.5 rearend uses an oval cover and the housing has two small cast-in protrusions near two of the bottom cover bolts. But, did you know there is more than one style of 10-bolt rearend? Yukon Gear & Axle SK CSGM8.5 Yukon Gear & Axle Crush Sleeve Eliminator Kits | Summit Racing. 3. remove yoke from splines. 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 . 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. Unfortunately, unless you have the two units side by side, it is nearly impossible to tell them apart. Axle Type Cover Bolts FT. LBS. Follow along as we show how to measure and install a C10 one piece driveshaft. 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. 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 rotating torque is low, tighten pinion nut in 6.8 Nm (5 ft. All 8.6-inchrears have disc brakes, and 8.5-inch units have drum brakes. Date and location of manufacture are stamped in the axle tube, and this table deciphers the code. Next we disassembled everything, starting with the cross pin bolt, cross pin and C clips. 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. 2429 Mercantile Drive Suite A, Rancho Cordova, CA 95742, Copyright 2023 West Coast Differentials | Website Design by. It was used in different models by all GM divisions with the exception of Cadillac. These protrusions are larger than those on the 7.5 rearend. 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. IMPORTANT: The pinion preload should be at or below 4 Nm (35 inch lbs.) Speedway Motors employees enjoy not only helping our customers, but also turning some wrenches in their downtime as well. 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 . 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. 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. All rights reserved. When additional shims are added, this increases the total width of the retainer assembly, pushing the bearing cones further away from their respective cups and as a result reducing drag on them. What happens if you have too much backlash in differential. Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. I need the torque on the pinion nut for the rear differential. Unfortunately, you cannot rely on this torque because the crush sleeve provides unpredictable and non-linear resistance as it buckles and crushes. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. Oct 29, 2001. 2 ways. . Either way, the nut should be tightened to produce 24-32-in-lb of torque to turn the pinion . 5 - 8 : Ring Gear Bolt Torque (Foot lbs) 120 : Bearing Cap Torque (Foot lbs) 135 : Pinion Nut Torque: Tighten as necessary to obtain correct preload: Pinion Bearing Retainer Torque (Foot lbs) :65 : . The rotational torque spec is between 15-19. 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. Sometimes, you need to push yourself. 2023 Power Automedia. The first is to use a crush collar; this involves applying pressure between the yoke and cup until it reaches the desired depth. Inch pound torque wrench that will read that low of a number which will be "VERY" costly. It is important to have the right pinion nut for your 8.5-inch 10-bolt rearend. This is very important, because if you go too far the crush sleeve will be ruined. Come join the discussion about performance, lift kits, wheels, tires, modifications, troubleshooting, maintenance, and more! Pinion Nut (Solid Spacer) 28-Spline Pinion - 200 ft lbs. 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. Torque measures the amount of force that is generated when the engine rotates at a certain speed. This high quality product ensures that your vehicle's rear axle assembly will remain securely fastened and properly aligned during operation, giving you peace of mind when driving on the roads or tracks. GM 8.875" 12 Bolt Differential Ring Gear and Pinion Set. While backlash is a necessary component of manufacturing tolerances, it can be a significant source of problems for certain applications. Torque is a measure of rotational force that must be applied in order to secure components such as axles and other parts together. Locate a Sierra Gear & Axle Distributor near you. How Much Hp Can Stock 5.3 Injectors Handle, What Kind Of Gas Does A Jeep Cherokee Take, Popping Noise When Accelerating And Braking. Search Car Torque Specifications by Engine or Model Check the pinion preload by rotating the pinion with a torque wrench. CHECK FREQUENTLY as you progressivley tighten the pinion nut. 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. 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. Our LS swap adapter kits make it easy! Have a seal puller if possible, makes getting the old one out a lot easier. 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. Ultimately, both engine power and torque play important roles in determining a cars performance capability as well as its overall efficiency. Find the torque thats on it before hand and tighten it down to that afterwards. Uses 28 or 30 spline c-clip axles. I am also replacing all the bearings on my son's 97 Chevy rear end. Currie 60/70 : Torque . A 2.6-3.0 gear ratio range is perfect for flat places and most people find this ratio suitable for their needs. The 8.5-inch 10-bolt rearend is hugely popular because aftermarket carriers and gears are easily interchangeable. The OEM pinion nut is 1 1/4 inches. Save Share. Nov 18, 2016. 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. See all 36 photos. How to eliminate unwanted to holes in your car's body, trunk, floor, or firewall with easy to use patch plugs from Speedway Motors. To do this, measure 10 thousandths of an inch on the shim and shift it accordingly. Record pinion flange rotating torque, with a torque wrench. 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. That is theimpetus for why we decided to put this swap meet/junkyard identification guide together. 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! Vendor Part Number. The easiest way to tell the difference is by looking at the brakes. This is an 8.2 BOP axle. Like most 10-bolts, the axles are held in place by C-clips on the inner end of the axles. It first appeared in 1970 production cars as a corporate replacement for the 8.2-inch 10-bolt rearend. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. When a very slight increase in pinion turning effort is noted, check the pinion rotating torque using an inch-pound torque wrench. 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. Call 800.979.0122, 7am-10pm, everyday. The pinion diameter is 1.438 inches, and has 25 splines. Try our Differential Gear Calculator. 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. sny 00235 converted You will need to know that there are different series of differentials (seriestwo and three). You keep on tightening the pinion nut until you are within the in-lb. 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. When it comes to suspension, preload is an important factor. . 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. 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. 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. Cover Bolts: 25 ft lbs. Ring gear bolts 65 foot pounds, bearing cap bolts 60 foot pounds. 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. Generally speaking, these torque specifications will fall between 20-30 ft/lbs; however, for most applications ARB recommends a torque specification of right around 25 ft/lbs. Usually, when people are discussing gear ratios, theyre referring to the relationship between a pinion gear and a spur gear.