Axle Type Cover Bolts FT. LBS. 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. Axle Order Form; Floater Axle Order Form; Custom Driveshaft Order Form; . 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. when assembling the pinion into place, include the crush sleeve between the two pinion bearings. Finding a 12-bolt that is affordable, is getting to be anearly impossible endeavor. Yukon Gear's Pinion Nut makes any job more efficient by ensuring your parts remain secure while providing superior protection from contaminants. The 7.5 rearend uses an oval cover and the housing has two small cast-in protrusions near two of the bottom cover bolts. It is robust enough to withstand any punishment inflicted on it by racetrack use. Torque is a measure of rotational force that must be applied in order to secure components such as axles and other parts together. Not only will you be getting the best quality performance with JEGS Pinion Nut, but you'll also have the convenience of knowing it's made to fit GM 8.875 inch 12-bolt car and truck axles. Uses 28 or 30 spline c-clip axles. This website uses cookies or similar technologies to enhance your browsing experience. Is a GM 10 Bolt rear end good? Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. 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 date and location of manufacture coding changed in 1971. 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. You can rest assured knowing that your axle is secured with this high quality product. Pinion Nut Size: 1-1/4" Featured Products: GM 8.2"/8.5"/8.6" (Chevy) 10 Bolt / Aluminum Girdle Cover / TA Performance / TA_1807 . When working on the assembly of a differential, there are two methods for adjusting the pinion depth. Order before 4PM and most parts ship out the SAME DAY. 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. It was in the 30-35 I "think" from GM. 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 : . without any detrimental effects occurring. Axle Images: Axle Details. It has a black oxide finish that ensures corrosion resistance while its construction of hardened steel ensures durability even under extreme conditions. Just get a couple sacrificial pinion bearings and open them up a little so you don't have to press them on and off the pinion and add/remove shims until you get the correct preload shown on page 2 of the set up manual. Alternate Description. If the backlash is too tight, you'll need adjust the carrier shim by moving it away from the pinion. 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. That being said, it isnot recommended for use behind engines that make a serious amount ofhorsepower. 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 . 1/2" T-bolts - 50 ft lbs. What happens if you have too much backlash in differential. 6 TO 10. 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. Good luck finding one of these, however, as they are very popular among performance enthusiasts. You can replace the pinion seal without changing the crush sleeve. Oct 29, 2001. It has to be drained to get a peak inside. Introduction. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. 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. GM 14 Bolt Specs (all data for SRW truck 14 Bolt axle - others may vary - see table on "different 14 bolts" below) . 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. Pinion Nut (Solid Spacer) 28-Spline Pinion - 200 ft lbs. Learn more about GM steering column identification, GM steering column lengths, and GM steering column compatibility. Tighten nut until it takes 15-20 inch lbs of torque to rotate the pinion bearings: None: Self Locking Nut . Unfortunately, unless you have the two units side by side, it is nearly impossible to tell them apart. 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. Some pinion nuts require a special procedure to be properly installed. 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. Set the preload carefully (see "Set Up Specifications") so that the bearings will have a long life. This is an 8.2 BOP axle. 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. Build your own custom newsletter with the content you love from Chevy Hardcore, directly to your inbox, absolutely FREE! 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! How tight should a pinion nut be? Torque measures the amount of force that is generated when the engine rotates at a certain speed. What is the gear ratio on a 10 bolt rear end? It also has an inner diameter of 1 . 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. When a very slight increase in pinion turning effort is noted, check the pinion rotating torque using an inch-pound torque wrench. 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. Both axles use a third member that contains the differential, which is made up of the . I have a 1993 Suburban K1500. This heavy duty nut has been designed using high grade steel and features a zinc plated finish for maximum protection against rust and corrosion. Tightening Torque Clamp Load Sometimes strength is an important factor when choosing between components, and this is true with the 10-bolt and 12-bolt rearends. . I am also replacing all the bearings on my son's 97 Chevy rear end. Then use lock-tight on the threads and tighten the nut back to where it was. For the street/strip car, the 10-bolt rearend is a great choice. Alternatively, shims can also be used to adjust the pinion depth. It is internally different from the 8.2 Chevy, but has the same external bosses and brackets. GM 10 Bolt 8.2; GM 10 Bolt 8.5; GM 12 Bolt 8.875; GM 8.6 IRS; GM Install Kits; MOPAR. Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. May 22, 2021 / 9 Minutes Read / This is very important, because if you go too far the crush sleeve will be ruined. Pinion preload (used bearings): 8 - 10 in*lb. This one is not as easy as it sounds. 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. 1/2" x all lengths 100-110 ft lb. MODEL 20. Step 1: To seat, torque nut to 50 (lb-ft) while . Nut secures driveshaft yoke to pinion gear. Not sure the torque specs on the carrier bearing caps, we red lock-tight them and hit them with the impact pretty hard at work. 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. Find the application and ratio you need? Nov 18, 2016. The distinction between these two types of torque can be useful for assessing how well a car will perform in different situations: cars with higher levels of low-end torque are typically better suited for starting from standstill or accelerating quickly; whereas cars with greater amounts of high-end torque are likely more suitable for reaching faster top speeds over long distances. GM: .035. It doesn't have to be hard, and we offer some tips to keep your car's finish in top shape. PINION NUT GM 7.5 8.5. 2.2L FOUR CYLINDER ENGINE: Camshaft sprocket bolt 96. You have to do it a little differently though. 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. 3/8" T-bolt - 30 ft lbs. Back off left-side adjusting nut approximately 2 slots. This difference can cause issues with accuracy and repeatability in some applications, necessitating either higher-end components or additional compensation mechanisms. There is no way to happiness.happiness is the way. on old bearings. This method works every time is done precisely as described. Would this be the same How to write up for my truck? 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. By Albert. 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 process must be done carefully, gradually increasing the tightness of the nut in increments until it reaches the desired torque level required to rotate the pinion correctly. How involved is the process of changing it? A forum community dedicated to GMC and Chevy full size owners and enthusiasts. 24-32 INCH pounds?? 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. 2 ways. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. That being said, limited gear sets are offered for the carriers, especially if you plan to change gear ratios. To do this, measure 10 thousandths of an inch on the shim and shift it accordingly. 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. Find out how to access AutoZone's Torque Specifications Repair Guide for 300, 300C & Magnum 2006-2008, Charger 2006-2008. Recently a friend enlisted me to help rebuild his 7.5 GM 10 bolt. I got the price for the seal, and it is near $9. 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. 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. Crawlpedia is an off-road encyclopedia featuring a complete list of proper ring and pinion gear set up torque and backlash specs. 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. Final torque on the pinion nut is necessary to compress the crush sleeve. stock 4L60E on 5th filter/fluid change; 2nd set of drive shaft u . Have a seal puller if possible, makes getting the old one out a lot easier. Once the specified preload has been obtained, make sure the bearings are seated by rotating the pinion several times. Either way, the nut should be tightened to produce 24-32-in-lb of torque to turn the pinion . You can feel the power of all that torque in your bones as it propels the car forward even faster than before. 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. 1989 GMC Suburban SLE 2500 4WD 5.7L Granny 4-speed. checking the pre load with the inch lb torque . Locate a Sierra Gear & Axle Distributor near you. Use oil on the pinion nut washer surface during all assemblies . One intimidating part for a lot of guys is the rear end. Rotate the pinion when tightening the nut to seat the bearings evenly. Ring Gear Backlash Ring Gear Bolts to Cast FT. LBS. For a better experience, please enable JavaScript in your browser before proceeding. Gear Ratio Calculator - Calculate the gear ratio of gears based on their tooth count. Follow along as Zach works over the old 10 bolt and brings it back to life. New bearings 19 to 22 inch pounds. and 12 bolt #s. found these #s at Richmond Gear: Torque specifications. The rotating torque must be 2 to 3 N-m (15 - 25 inch pounds). Well show you what to look for in this buyers guide. Ring and Pinion Ratio Variations - An explanation of why some ring and pinion gear ratios vary. How Much Hp Can Stock 5.3 Injectors Handle, What Kind Of Gas Does A Jeep Cherokee Take, Popping Noise When Accelerating And Braking. How do you fix a loose pinion bearing preload? It is therefore important to strike a balance by carefully adjusting the backlash so that it meets manufacturer requirements for that particular differential system. LBS. The easiest way to tell the difference is by looking at the brakes. 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. First I measured the old crush sleeve as a starting point. 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. FORD: .020. As a result, this construction became one of the most popular axle assemblies on the market due to its durability and affordability. The pinion nut is a 32mm or 1 1/4" so you need a socket and adapters for that. Now that we know our pinion depth shim is correct we can do the final assembly. Step 3: Back off 3/8-turn for automatic hubs, and just enough to free the bearing for manual hubs. This ring and pinion setup guide is Copyright Crawlpedia.com - Please provide a link back to this page when copying. JavaScript is disabled. 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. Connecting Rod Cap Nuts 38. How a GM 10-Bolt Differential Goes Bad. 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. I will attempt to cover the necessary steps in building a differential for a GM 10 bolt rear end with an 8.5/8.6 ring gear. The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. Torque Specs on Dana 60. 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. Free Shipping - Yukon Gear & Axle Crush Sleeve Eliminator Kits with qualifying orders of $99. By manipulating these two components and their ratio to each other, you can achieve different levels of performance from your vehicle that may suit your individual needs better than stock settings would. **Note the Pinion nut is in INCH pounds Ring Gear Bolts = 55 lb. 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. This is zero backlash. I don't use it on the bearing cap bolts. carrier bearings, races, crush sleeve, pinion nut, pinion seal, a gasket and even has the gear marking grease included. 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. Ring gear bolt torque: 110 ft*lb. Quaility Gears provide guaranteed performance. . VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Unfortunately, you cannot rely on this torque because the crush sleeve provides unpredictable and non-linear resistance as it buckles and crushes. ALL72156. This assembly featured an 8.2-inch ring gear diameter as well as 28-spline axles which provided adequate strength for these vehicles. This heavy duty nut has been designed using high grade steel and features a zinc plated finish for maximum protection against rust and corrosion. Setup Specifications. 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. The "feel" people are way more experienced that you or I so the top one is re-commended. One is the small, 7.5-inch, another is the 8.2-inch, and yettwo more are the 8.5 and 8.6-inch. 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. 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. . This gives us confidence in the quality of the parts we sell. 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. The first is to use a crush collar; this involves applying pressure between the yoke and cup until it reaches the desired depth. It's got a 350 with a 10-bolt rear end. We will safeguard your e-mail and only send content you request. 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. All 8.6-inchrears have disc brakes, and 8.5-inch units have drum brakes. This sleeve must be replaced every time the pinion nut is torqued. does anyone know the torque specs for a 10 bolt 7.5 for the pinion and carrier caps . 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. Dana Technical Service Specs. Mine was a pita. BACK LASH 0.000". 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. You will need a torque meter in inch-lb. Maintaining your car's paint finish is essential to keep it looking great. Gear oil is nasty stuff, mostly in smell. Another way to tell the difference between an 8.2 and an 8.5 rearend is to pull the cover and look at the bolt holding the spider gear crosspin. For that reason,many enthusiasts are considering the 10-bolt. Just out of curiosity,what are the 8.5 (r 65lbft & c 60lbft ?) 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. How to eliminate unwanted to holes in your car's body, trunk, floor, or firewall with easy to use patch plugs from Speedway Motors. One thing often overlooked is the RTV sealant that needs to be applied to the splines (otherwise rear end grease can leak past the splines), and locktite on the new pinion nut. 5. put back together and tight pinion nut to specified torque. In this context, "hardest gear" refers to the ratio of front sprocket teeth to rear sprocket teeth - typically expressed as 4.55:1. Zone 1.5 BL, 22x12s, California delete, Detroit TrueTrac, etc. Good info on this site from what I've seen so far, kudos. CRAWLPEDIA Off-Road Encyclopedia. RING GEAR TORQUE FOOR LBS. Additionally, vehicles with higher torque have better control over their handling due to stronger low-end acceleration which makes them safer on roads and highways. When installing a new 8.5-inch 10-bolt rear differential, it is important to use the right pinion nut for your application. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. If youre building a street car and want to improve performance, we all know the drill. Sie Bear Caps FT. LBS; AMC 20 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. To begin, the yoke or coupler must be attached to the pinion shaft. We were lucky and had a desirable contact pattern on both the drive and coast sides of the gear teeth. I agree that the preload needs to be about 30 inch pounds. If a bearing system is designed to have no clearance, then preloading is necessary. You will need to know that there are different series of differentials (seriestwo and three). These are two pinion gears for the 8.5-inch 10-bolt. To reach an accurate level of tension or preload, experience and expertise are usually required when dealing with this type of repair work. 12 Bolt Rear Axle Torque Specs. Our stock 10-bolt was plenty stout to withstand the torture of 165 hp from the ZedSled's stock 350 (yes, that was sarcasm), but we're looking down the barrel at 500 hp from our cammed-up 6.0 swap . Sometimes it feels like youre in a race car when you accelerate hard with a high-torque vehicle. I have been taking it to ~250-300 ft lbs. 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. 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. 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. Edit: you have it pretty much. lbs.) 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. 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. The axle shafts are also held in place by four-bolt retainer plates at the outer bearing, not C-clips. Loosen the right-side adjusting nut and tighten the left-side adjusting nut until the ring gear contacts the pinion without binding. 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. Mikz86TA. 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. Use Loctite #271 on the bolt threads and torque in a crisscross fashion to 55 ft-lb. 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 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. 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! 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 . This will ensure that your backlash is correct without having to swap the shims. Crankshaft Pulley to Crankshaft bolt 77. 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. 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. FSM says 181-325 ft-lbs. When it comes to suspension, preload is an important factor. You keep on tightening the pinion nut until you are within the in-lb. 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. Like all Chevy 10-bolts, the axles are retained by C-clips on the inner end of the axle shaft inside the carrier. Like the 8.2-inch 10-bolt, the 8.5 10-bolts use C-clips to retain the axles. A full range of pinion gears is offered for the Chevy 10- and 12-bolt axle assemblies so you are able to select the correct gear set for your vehicle, application, and setup. Most 8.2 factory covers also have the strangeprotrusionat the top. 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.