Free Shipping - Yukon Gear & Axle Crush Sleeve Eliminator Kits with qualifying orders of $99. Replace original worn or damaged nuts each time a gear set is changed. If sticky tires are used, youll quickly turn the 7.5-inch rear into a pile of unusable parts. If a bearing system is designed to have no clearance, then preloading is necessary. 14 bolts and 10 bolts are different, not sure about changing seals though. Next remove the nut and change the seal. 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. An 8.2 (shown) will have the same contour as the cover. 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. Torque measures the amount of force that is generated when the engine rotates at a certain speed. EDLANTA there is a "crush" spacer between the two pinion bearings that when tightened properly gives you the proper bearing preload. We look forward to serving you! 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. 2429 Mercantile Drive Suite A This procedure is necessary in order to ensure that everything within the drivetrain is working correctly and efficiently. Sie Bear Caps FT. LBS; AMC 20 ALL72156. 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. Products include ring and pinion sets, installation kits and axle shafts for GM, Ford, Chrysler, Jeep, and Toyota vehicles. Pinion Nut (Solid Spacer) 28-Spline Pinion - 200 ft lbs. CRAWLPEDIA Off-Road Encyclopedia. One will want to torque the pinion nut to 190- 240 ft lbs (Small Diff's) D60 and larger 225 -350 Ft lbs with the proper preload achieved. 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. 3/8" T-bolt - 30 ft lbs. With its superior strength and durability, you can count on your PYN10 pinion nut to remain securely in place for years of reliable service. 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. The pinion nut should then be secured and tightened until there is no bearing play at all. DIFF MODEL. If you locate a rearend that has coil spring perches, it could be from a G, A, B-body, or El Camino. Continue tightening the pinion nut to collapse the spacer and preload the bearings. 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. I was able to pull the old crush sleeve from the pinion gear shaft without damaging it, so I just reused it and added a 0.51mm shim to it. 1988 C1500 Silverado, 5.7L with some go fast parts. Read More. 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. Reply Quote. 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. 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. Is a GM 10 bolt rear end good? Rightfully so, because when comparing the 10 and 12-bolt units, its definitely the more durable of the two. 1/2" T-bolts - 50 ft lbs. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Pinion bearing preload is measured in inch-pounds, and is a measure of the rolling resistance of the pinion bearings after proper torque has been applied to the pinion nut. It is important to have the right pinion nut for your 8.5-inch 10-bolt rearend. you have it pretty much. At West Coast Differentials we are committed to making your experience with us totally enjoyable. 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. 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. 1. While the 8.5-inch rearend was used on vehicles up to 1999, The 8.6-inch (8.625) was used on 2000 and later-year trucks. Rotating torque should be equal to the reading recorded during removal plus an additional 0.56 Nm (5 inch lbs.). The PYN10 is a 30 spline pinion nut designed for this purpose, and it is specifically made to be used with vehicles that have a 30 spline pinion in their 10-bolt 8.5" rear end assembly. 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. There are several differentials for the 10-bolt rearend. This difference can cause issues with accuracy and repeatability in some applications, necessitating either higher-end components or additional compensation mechanisms. Speedway also offers the . Follow along as Zach works over the old 10 bolt and brings it back to life. Search Car Torque Specifications by Engine or Model Gear oil is nasty stuff, mostly in smell. range. How Much Hp Can Stock 5.3 Injectors Handle, What Kind Of Gas Does A Jeep Cherokee Take, Popping Noise When Accelerating And Braking. Not only has the 10-bolt rearend proved its worth in high-performance, high-horsepower applications, but it has also been found to be a great unit for street/strip cars. It is therefore important to strike a balance by carefully adjusting the backlash so that it meets manufacturer requirements for that particular differential system. But, did you know there is more than one style of 10-bolt rearend? The torque required to seat the nut is very large, possible 200 ft-lbs or more. With this pinion nut, you can rest assured that your vehicle will be ready for whatever terrain comes its way! 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. Mgrotel, nice cliff notes. He is resurrecting a G-Body Chevy Monte Carlo and decided to reuse the original 3.73 gears and a factory GM posi unit. Loosen the right-side adjusting nut and tighten the left-side adjusting nut until the ring gear contacts the pinion without binding. 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. Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. 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. How a GM 10-Bolt Differential Goes Bad. Not only is this a wise financial decision for both parties involved, but it also shows how much Chevrolet values customer satisfaction and safety. for a ten bolt rear it should be about 20 inch pounds while you are turning the torque wrench. 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 . 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. The Hex is 5/16 the threaded part is SAE 5/16 inch 18 threads per inch. Too much won't hurt anything other than break the bolt. Then use lock-tight on the threads and tighten the nut back to where it was. By continuing to use our website, you agree to our Privacy Policy. 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. Sometimes when repairing or replacing components within a transmission, you may encounter a crush sleeve. Some pinion nuts require a special procedure to be properly installed. 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. Try our Differential Gear Calculator. Fords small block and big block engine families have their share of flexplate differences. 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. Race-spec ring and pinion gears for desert racing, rock bouncing, and rock . Our LS swap adapter kits make it easy! Setup Specifications. That does not describe how tight the pinion nut needs to be however. Pinion preload (new bearings): 17 - 30 in*lb. For inquiries about our products and services, please fill out the form below. FORD: .020. This versatility makes it a great choice for those who want to take their car from the street to the track without worrying about its durability. 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 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. 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. When compressing the crush sleeve, many guys use an impact wrench and end up crushing it too far, ruining the sleeve. Step 1: To seat, torque nut to 50 (lb-ft) while . Give us a try, we think you'll be glad you did! VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. For reference use at own risk. Mine is leaking. Some vehicles require an 8.5" 10-bolt pinion nut to secure the rear axle assembly of their vehicle. Alternate Description. Looking for a driveshaft for your 67-72 C10? 4.replace seal. JavaScript is disabled. Install left-side adjusting nut lock, washer, and bolt. 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. ALL72156. 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. 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. Dana Technical Service Specs. Some of the most popular GM vehicles have come with 10-bolt rear ends. Upgrade your cam, intake, headers, stall converter, and the list goes on from there. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Are all GM 10 bolts the same? This is zero backlash. Some builders . I have a leaky pinion seal and housing seal so I am planning on replacing the seals in the very near future. These protrusions are larger than those on the 7.5 rearend. Ford 9 inch torque specs; Gear Ratio Calculator; Order Forms. 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. 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. 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. . 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. 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. 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. 8-Inch Ford Rear End Torque Specifications. The side bearing preload is the difference of preloads (5) x the gear ratio (3.73) = 18.65. Ring and Pinion Ratio Variations - An explanation of why some ring and pinion gear ratios vary. We were lucky and had a desirable contact pattern on both the drive and coast sides of the gear teeth. This distance must be precise; if it is too small, the gears will bind together and cause mechanical stress which can lead to premature wear or failure. This website uses cookies or similar technologies to enhance your browsing experience. This is especially true when it comes to cycling. 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. This technology is particularly advantageous in improving vehicle handling and traction under all types of driving conditions, from wet roadways to tight turns. Uses 28 or 30 spline c-clip axles. I got the price for the seal, and it is near $9. Record pinion flange rotating torque, with a torque wrench. GM 8.5 10 bolt - 10 bolt cover with 8.5 ring gear. We'll send you the most interesting Chevy Hardcore articles, news, car features, and videos every week. Unfortunately, you cannot rely on this torque because the crush sleeve provides unpredictable and non-linear resistance as it buckles and crushes. Pin. 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. Gear Ratio Calculator - Calculate the gear ratio of gears based on their tooth count. Backlash refers to the distance between two mating gear teeth when they are not engaged. 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. FSM says 181-325 ft-lbs. Just out of curiosity,what are the 8.5 (r 65lbft & c 60lbft ?) . Ring gear bolts 65 foot pounds, bearing cap bolts 60 foot pounds. While a carrier-bearing girdle is available for the 8.2-inch rearend and does give some support to the housing it doesnt provide a reliable and suitably strong solution. Well help you determine the correct flexplate for your Chevy engine in this buyers guide. 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. This one is not as easy as it sounds. Currie 60/70 : Torque . The more torque produced, the less energy needed to move the car forward. Thick Gears and Carrier Breaks - Thick ring and pinion gears and differential carrier breaks explained. 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. . As the speedometer rises, each gear shift is accompanied by an even more intense sensation of power, making every drive exhilarating and unforgettable. 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. 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. big gear head. on new bearings, or 1.2 Nm (10 inch lbs.) 7/16" x all lengths 60-65 ft lb. 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. does anyone know the torque specs for a 10 bolt 7.5 for the pinion and carrier caps . This will help ensure that there isn't an excess of tension on these components, which can lead to premature wear or even failure. The rotational torque spec is between 15-19. 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 : . 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. Is a GM 10 Bolt rear end good? We started by getting a rebuilt kit from Motive Gear . 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. Differential cap bolt torque: 90 ft*lb. Quaility Gears provide guaranteed performance. The pinion shaft diameter is 1.625 inches and will have either 28 or 30 splines. 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. 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. If you are installing an axle and need to know the torque specs, it is important to first understand what torque is. So, when adjusting preload, if it is too loose then the shims should be removed. Originally, gear ratios ranged from 2.41 through 4.10. Skip to main content. Mine was a pita. Tighten to 8 ft-lbs (10 N-m), then tighten an additional 1/3 turn to at least 37 ft-lbs (50 N-M). TORQUE SPECIFICATIONS. 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. For the street/strip car, the 10-bolt rearend is a great choice. 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. 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. There are a few that have geared axles on here so they should chime in and help out with Real TECH :rocking: On the other hand, if preload is too tight then you'll need to take out the pinion gear and add extra shims in order to reduce bearing pressure against the races. Ring gear bolts. Mikz86TA. You will need to know that there are different series of differentials (seriestwo and three). What size is pinion nut Silverado? 10.50 PINION NUT: GM . This results in improved performance, longer life span and more efficient operation of the system. 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. Have a seal puller if possible, makes getting the old one out a lot easier. A forum community dedicated to GMC and Chevy full size owners and enthusiasts. 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. His passion for performance got him noticed by many locals, and he began helping them modify their vehicles. 8-10 ft lbs: None: None: GM 12 Bolt Car: Torque: Lubricant: Thread Locker: Main Caps: OEM Housing: . By Albert. Failure to apply enough preload on the bearings can have an adverse affect on gear contact patterns. New bearings 19 to 22 inch pounds. You keep on tightening the pinion nut until you are within the in-lb. It is not an uncommon sight to see a Yukon Gear Pinion Nut when it comes to automotive repairs. Now that we know our pinion depth shim is correct we can do the final assembly. See all 36 photos. Talk to the experts. 2429 Mercantile Drive Suite A, Rancho Cordova, CA 95742, Copyright 2023 West Coast Differentials | Website Design by. The X and F-body spring perches come in two versions: mono-leaf (left) which is shallower than the multi-leaf (right). 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. MODEL 20. 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. That way, you dont unknowingly spend money on something you really do not want. The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. 3. remove yoke from splines. 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. 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). When I changed all the bearings in my suburban rear end, I bought the crush sleeve eliminator shims from Summit. 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. They say ignorance is bliss but I say it's just damn expensive. 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. 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. 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. 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? 2. unbolt pinion nut. In this context, "hardest gear" refers to the ratio of front sprocket teeth to rear sprocket teeth - typically expressed as 4.55:1. Cover Bolts: 25 ft lbs. 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. The inch pound rating is the force required to turn the pinion after the crush sleeve has been crushed. 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.) Sierra Gear & Axle is a premium line of light-duty differential parts. The date and location of manufacture coding changed in 1971. grade 8. Crankshaft Main Bearing Cap Bolts 70. 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. with an impact. This sleeve must be replaced every time the pinion nut is torqued. 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. It refers to how much tension is applied to the spring before it's installed in the vehicle and can be adjusted accordingly. Inside, the ring-gear bolts are the same as the 8.5 corporate unit, but the pinion-shaft diameter measures 1.438 inches. 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. 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. OEM bolts have thread locker on the threads. 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. One intimidating part for a lot of guys is the rear end. 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. 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. 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. 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.

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