Connecting Rod Cap Nuts 38. 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! 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. ALL72156. 2.2L FOUR CYLINDER ENGINE: Camshaft sprocket bolt 96. When compressing the crush sleeve, many guys use an impact wrench and end up crushing it too far, ruining the sleeve. 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. The torque it takes to crush . What happens if you have too much backlash in differential. The axle shafts are also held in place by four-bolt retainer plates at the outer bearing, not C-clips. 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. If youre building a street car and want to improve performance, we all know the drill. By Albert. 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. These protrusions are larger than those on the 7.5 rearend. When in doubt, refer back to step #6 for more information about suggested torque specs for your particular axle installation project. on old bearings. It should be noted that while this axle is suitable for everyday driving and light duty applications, it must be upgraded if you plan on doing any serious racing or off-road activities with your vehicle. 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. 24-32 INCH pounds?? Over 6,000 Automotive Torque Specs. Ring Gear Backlash Ring Gear Bolts to Cast FT. LBS. Unfortunately, unless you have the two units side by side, it is nearly impossible to tell them apart. 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. While backlash is a necessary component of manufacturing tolerances, it can be a significant source of problems for certain applications. MODEL 20. Quaility Gears provide guaranteed performance. Cover Bolts: 25 ft lbs. See other Red Line Oil Products that we recommend. The distance between thebottom center bolt in the cover and its adjacent bolts is 3 1/4 inches. for a ten bolt rear it should be about 20 inch pounds while you are turning the torque wrench. Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. West Coast Differentials has been distributing quality differential and axle parts since 1982. Differential cap bolt torque: 90 ft*lb. This strength comes from its larger pinion shaft diameter which measures 1.625 inches with 30 splines, 13 percent larger than the 1.438 inch diameter and 25 spline pinion shaft found on a 10-bolt axle. All of the parts we sell are also used every day in our busy service shop. does anyone know the torque specs for a 10 bolt 7.5 for the pinion and carrier caps . This is an 8.2 BOP axle. Well help you determine the correct flexplate for your Chevy engine in this buyers guide. For inquiries about our products and services, please fill out the form below. It saved me time and effort trying to crush a brand new crush sleeve. ALL72156. 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. Find the application and ratio you need? Oct 20, 2011. 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? To ensure optimal performance in any application, it is essential to pay close attention to the amount of backlash between gears on all differentials. 9 Minutes Read / GM 10.5" 14 Bolt: 20 to 35 in-lbs. The pinion nut is a 32mm or 1 1/4" so you need a socket and adapters for that. Depending on what you're using it for, there is an axle size to suit; 7.5/7.625-, 8.2-, 8.5- or 8.6-inches from smallest to largest respectively, so no matter how much horsepower you need to support, there is an option available to fit your needs perfectly and provide excellent strength and reliability even under heavy loads and high speeds. GM 8.5" 10 Bolt / Ring & Pinion Gear Set w/ Master Bearing . 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. Speedway also offers the Economy Ring & Pinion Setup Tool we needed. For a better experience, please enable JavaScript in your browser before proceeding. 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. Received 16 Likes on 13 Posts. You have to do it a little differently though. 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. Come join the discussion about Silverados, Sierras, and other full size trucks performance, modifications, suspension, lift kits, tires, maintenance, and more! It was in the 30-35 I "think" from GM. 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. There are other 14b axles out there - a 9.5" ring gear semi-float for one, and even a 11.5 . CRAWLPEDIA Off-Road Encyclopedia. Originally, gear ratios ranged from 2.41 through 4.10. Good info on this site from what I've seen so far, kudos. 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. 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. 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. This difference can cause issues with accuracy and repeatability in some applications, necessitating either higher-end components or additional compensation mechanisms. If used in a daily driver or cruiser application, the 7.5-inch rearend should survive behind an engine with 350hp, if traction is limited during spirited driving. 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. Recently a friend enlisted me to help rebuild his 7.5 GM 10 bolt. Pin. As a result, this construction became one of the most popular axle assemblies on the market due to its durability and affordability. 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. I used an 1/4" inch-lb torque wrench with two adapters and a 1 1/16" socket to check the preload. 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 . 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 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. CHECK FREQUENTLY as you progressivley tighten the pinion nut. The inch pound rating is the force required to turn the pinion after the crush sleeve has been crushed. In either case, it is important that this critical adjustment be performed correctly in order to avoid costly repairs or replacements down the line. They say ignorance is bliss but I say it's just damn expensive. Upon initial . It also uses a 10 5/8-inch irregular-shaped cover. Many times, if you locate a 10-bolt rearend, its usually a 7.5-inch unit. Ultimately, both engine power and torque play important roles in determining a cars performance capability as well as its overall efficiency. Check the pinion preload by rotating the pinion with a torque wrench. 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. It is therefore important to strike a balance by carefully adjusting the backlash so that it meets manufacturer requirements for that particular differential system. That way, you dont unknowingly spend money on something you really do not want. 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. Here's a link to when I did mine. Setup Specifications. The 8-inch rear axle looks very much like the popular Ford 9-inch rear axle. GM 10 Bolt 8.2; GM 10 Bolt 8.5; GM 12 Bolt 8.875; GM 8.6 IRS; GM Install Kits; MOPAR. SPEC Clutches: For That Next Engine Swap Or OEM, Shop Tour: Brian Tooley Racing Expands To Be A One-Stop, Moroso Anti-Roll Kit Is The Right Tool For The, Steer Your Classic Ride Straight With A New CPP Steering, NEW LS Bellhousing For Magnum And T56-Shifted Hot, Fenix Is A Next-Gen 69 Camaro With 1,180, A Brothers Quarrel Results In This Fine 1955 Chevy, Is This Barn Find The Worlds First Corvette? and 12 bolt #s. found these #s at Richmond Gear: Torque specifications. 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. 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. 2. unbolt pinion nut. Ring Gear Diameter: 8.500Cover Bolts: 10Ring Gear Bolts: 10Ax . The following table contains the proper specifications for all popular axles. big gear head. Bear Preload IN. 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. Ring gear bolts 65 foot pounds, bearing cap bolts 60 foot pounds. The 8.5-inch 10-bolt rearend was used in cars and trucks over a wide range of years. 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. Nov 18, 2016. I have a 1993 Suburban K1500. The pinion shaft diameter is 1.625 inches and will have either 28 or 30 splines. How tight should a pinion nut be? Tightening Torque Clamp Load (lbs.) Replace original worn or damaged nuts each time a gear set is changed. 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. But, did you know there is more than one style of 10-bolt rearend? Not only is this a wise financial decision for both parties involved, but it also shows how much Chevrolet values customer satisfaction and safety. 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.) Torque Specs on Dana 60. I like to slowly tighten the new pinion nut until I take up all of the front to back free play. It refers to how much tension is applied to the spring before it's installed in the vehicle and can be adjusted accordingly. Crawlpedia is an off-road encyclopedia featuring a complete list of proper ring and pinion gear set up torque and backlash specs. 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. The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. Crankshaft Main Bearing Cap Bolts 70. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. Step 3: Back off 3/8-turn for automatic hubs, and just enough to free the bearing for manual hubs. Too much won't hurt anything other than break the bolt. Both axles use a third member that contains the differential, which is made up of the . EDLANTA there is a "crush" spacer between the two pinion bearings that when tightened properly gives you the proper bearing preload. . One intimidating part for a lot of guys is the rear end. Sometimes strength is an important factor when choosing between components, and this is true with the 10-bolt and 12-bolt rearends. Sure, you know whats in there and what it does but are you willing to tear into it and rebuild the differential? In this context, "hardest gear" refers to the ratio of front sprocket teeth to rear sprocket teeth - typically expressed as 4.55:1. 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. Backlash = 6-10 (.001 inch) 2003 S-10 ZQ8 - 262/M5:bowtie: 1986 Pontiac Trans Am - 355/A4 Reply Quote. 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. Upgrade your cam, intake, headers, stall converter, and the list goes on from there. To reach an accurate level of tension or preload, experience and expertise are usually required when dealing with this type of repair work. Ring Gear Bolt Torque (Foot lbs) (N.m.) Bearing Cap Torque (Foot lbs) (N.m.) AMC; Model 15 : 20 - 40 (2.3 - 4.5 ) . Zone 1.5 BL, 22x12s, California delete, Detroit TrueTrac, etc. I am also replacing all the bearings on my son's 97 Chevy rear end. GM 8.875" 12 Bolt Differential Ring Gear and Pinion Set. Inside the 8.2-inch 10-bolt, the ring-gear bolts have 9/16-inch socket heads with 3/8-24 left-hand threads. you have it pretty much. Typically, 10-bolt differentials are specific to a series of gears. Step 1: To seat, torque nut to 50 (lb-ft) while .

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