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. 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. 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. Inside, the ring-gear bolts are the same as the 8.5 corporate unit, but the pinion-shaft diameter measures 1.438 inches. 9 Minutes Read / The 8.5-inch 10-bolt also shares the same pinion shaft diameter as the more expensive 12-bolt. Replace original worn or damaged nuts each time a gear set is changed. Preloading a bearing eliminates the clearance, which increases stiffness and reduces friction. The pinion nut should then be secured and tightened until there is no bearing play at all. 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. 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. These have been around since 1975, and were installedunder cars, small trucks, and vans up to the 2005 model year. What is the gear ratio on a 10 bolt rear end? This procedure is necessary in order to ensure that everything within the drivetrain is working correctly and efficiently. Step 1: To seat, torque nut to 50 (lb-ft) while . With the carrier removed w/ new bearings pinion bearing preload should measure a rolling torque of 20-30 in/lbs. 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. 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. Since it was so widely used, there is a better possibility of finding one of them at a salvage yard thanlocating a 12-bolt. Speedway also offers the Economy Ring & Pinion Setup Tool we needed. We have your differential parts in stock ready to ship today. 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. carrier bearings, races, crush sleeve, pinion nut, pinion seal, a gasket and even has the gear marking grease included. 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. The unique design and shape make installation easier while providing ample strength for off-road applications. 2.2L FOUR CYLINDER ENGINE: Camshaft sprocket bolt 96. Cover Bolts: 25 ft lbs. Backlash = 6-10 (.001 inch) 2003 S-10 ZQ8 - 262/M5:bowtie: 1986 Pontiac Trans Am - 355/A4 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. Call 800.979.0122, 7am-10pm, everyday. We believe that our exceptional customer service and product knowledge is what sets us apart from the competition. Backlash refers to the distance between two mating gear teeth when they are not engaged. grade 8. 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. Bearing Cap Torque (Foot Lbs.) If i missed any thing PLEASE tell me. ALL72156. 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. 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. 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. 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. 2. unbolt pinion nut. on new bearings, or 1.2 Nm (10 inch lbs.) 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 . Before disassembly, we marked the bearing caps and kept the side bearing shims on the correct side. 1. remove d shaft straps push shaft aside. Maintaining your car's paint finish is essential to keep it looking great. GM 10 Bolt 8.2; GM 10 Bolt 8.5; GM 12 Bolt 8.875; GM 8.6 IRS; GM Install Kits; MOPAR. 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. does anyone know the torque specs for a 10 bolt 7.5 for the pinion and carrier caps . 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. Crawlpedia is an off-road encyclopedia featuring a complete list of proper ring and pinion gear set up torque and backlash specs. :yipi: Thats it?? It's got a 350 with a 10-bolt rear end. Thats usually proven when used in high-performance, high-horsepower applications. This difference can cause issues with accuracy and repeatability in some applications, necessitating either higher-end components or additional compensation mechanisms. For inquiries about our products and services, please fill out the form below. 7/16" x all lengths 60-65 ft lb. Just think, now when you and Drew drive out to Moab, you can sit and take a nap every other time Drew has to fuel. Locate a Sierra Gear & Axle Distributor near you. The carrier bearing rides in the races and you will snap the bolt off before you warp or crack the races. This heavy duty nut has been designed using high grade steel and features a zinc plated finish for maximum protection against rust and corrosion. Sometimes it feels like youre in a race car when you accelerate hard with a high-torque vehicle. OEM bolts have thread locker on the threads. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. BOP stands for Buick/Oldsmobile/Pontiac. Sometimes when repairing or replacing components within a transmission, you may encounter a crush sleeve. increments until rotating torque is achieved. These protrusions are larger than those on the 7.5 rearend. To ensure optimal performance in any application, it is essential to pay close attention to the amount of backlash between gears on all differentials. Torque is a measure of rotational force that must be applied in order to secure components such as axles and other parts together. Tighten to 8 ft-lbs (10 N-m), then tighten an additional 1/3 turn to at least 37 ft-lbs (50 N-M). When working on the assembly of a differential, there are two methods for adjusting the pinion depth. 1/2" x all lengths 100-110 ft lb. 1988 C1500 Silverado, 5.7L with some go fast parts. Many mechanics use an impact gun while others insist the nut should be torqued by hand. Good info on this site from what I've seen so far, kudos. Mgrotel, nice cliff notes. Axle Retainer Plate Nuts: 3/8" T-bolts - 30 ft lbs. I am also replacing all the bearings on my son's 97 Chevy rear end. If you locate a rearend that has coil spring perches, it could be from a G, A, B-body, or El Camino. The only torque you should be concerned with is the torque it takes to rotate the pinion gear alone, 8-14 inch pounds for old bearings, 16-29 in/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. 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. This gives us confidence in the quality of the parts we sell. CAP TORQUE. 3/8" T-bolt - 30 ft lbs. May 22, 2021 / The GM 8.5" 10 Bolt axle, also known as the GM 8.6" axle or GM 10-Bolt, is available in many front and rear axle . 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. Thick Gears and Carrier Breaks - Thick ring and pinion gears and differential carrier breaks explained. To begin, the yoke or coupler must be attached to the pinion shaft. Are all GM 10 bolts the same? Connecting Rod Cap Nuts 38. Loosen the right-side adjusting nut and tighten the left-side adjusting nut until the ring gear contacts the pinion without binding. GM 8.6" gears will fit GM 8.5" axles and as such have become the universal aftermarket size for both. Pinion nut has no torque spec. 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. Once properly secured in place, you should have no further issues with your pinion nut installation. You will need to know that there are different series of differentials (seriestwo and three). Determining the correct flexplate for your V8 Mopar-powered project takes a little understanding of how these engines were balanced. 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. . 2429 Mercantile Drive Suite A, Rancho Cordova, CA 95742, Copyright 2023 West Coast Differentials | Website Design by. Zone 1.5 BL, 22x12s, California delete, Detroit TrueTrac, etc. I have been taking it to ~250-300 ft lbs. You can feel the power of all that torque in your bones as it propels the car forward even faster than before. The axle shafts are also held in place by four-bolt retainer plates at the outer bearing, not C-clips. The OEM pinion nut is 1 1/4 inches. Search Car Torque Specifications by Engine or Model FORD: .020. For the street/strip car, the 10-bolt rearend is a great choice. with an impact. The 12-bolt is generally considered to be the stronger of the two rear axles. GENERAL MOTORS: APPLICATION: FT-LBS / ( N-m) AXLE SHAFT FLANGE BOLT 'S' BODY CAR: 27 (37) TRUCKS: 60 (82) AXLE SPINDLE NUT 'A' BODY: 192 (261) 'C' 'E' 'H' & 'K' BODIES : 180 (245) 'J' & 'L' BODIES . As a result, this construction became one of the most popular axle assemblies on the market due to its durability and affordability. Whats The Reason Enthusiasts Cant Get, Yes I Am A Dinosaur, And Why I Feel Electric Cars, Rare Rides: The 1969 Chevrolet Camaro COPO, SPEC Clutches: For That Next Engine Swap Or OEM Upgrade, Shop Tour: Brian Tooley Racing Expands To Be A One-Stop Shop, Moroso Anti-Roll Kit Is The Right Tool For The Dragstrip, Why You Need A Proper Fuel Tank Vent In Your Ride, Fenix Is A Next-Gen 69 Camaro With 1,180 Horsepower. Carrier Cap Bolts. 8 to 11 in-lbs. A forum community dedicated to all General Motors truck owners and enthusiasts. 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. 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. We talked to a few of our in-house race experts about ways to make this racing season your best one yet! With this pinion nut, you can rest assured that your vehicle will be ready for whatever terrain comes its way! By Albert. Date and location of manufacture are stamped in the axle tube, and this table deciphers the code. You can use this instead of the crush sleeve. 2 ways. 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! Step 2: Back off, then torque to 35 (lb-ft) for automatic hubs,or 50 (lb-ft) for manual hubs. 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. 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. This is especially true when it comes to cycling. Install left-side adjusting nut lock, washer, and bolt. Now that we know our pinion depth shim is correct we can do the final assembly. Thanks Mike, Id appreciate it. 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. The 7.5 rearend uses an oval cover and the housing has two small cast-in protrusions near two of the bottom cover bolts. if it is under twents hold the yoke with a pipe wrench and tighten just a little at at time till the torque wrench reads a constant 20 inch pounds for the revolutions. Used bearings 10 to 14 inch pounds. There are other 14b axles out there - a 9.5" ring gear semi-float for one, and even a 11.5 . Yukon Gear's Pinion Nut makes any job more efficient by ensuring your parts remain secure while providing superior protection from contaminants. 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 . How tight should a pinion nut be? When I changed all the bearings in my suburban rear end, I bought the crush sleeve eliminator shims from Summit. 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. . Is a GM 10 bolt rear end good? Some pinion nuts require a special procedure to be properly installed. I also like to put some oil on the seal surface of the yoke to avoid tearing the new pinion seal. One intimidating part for a lot of guys is the rear end. The 8.5-inch 10-bolt rearends have ten 3/4-inch hex head bolts with 7/16-20-inch left-hand thread bolts that hold the ring gear to the carrier. Usually, when people are discussing gear ratios, theyre referring to the relationship between a pinion gear and a spur gear. Our LS swap adapter kits make it easy! 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. The 10-bolt GM rear end has been used in many different applications since its introduction in 1968 and continues to be highly regarded as one of the toughest axles available today due to its proven durability and versatility over decades of use in a variety of situations requiring extreme performance requirements from street racing too off roading adventures. This heavy duty nut has been designed using high grade steel and features a zinc plated finish for maximum protection against rust and corrosion. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The X and F-body spring perches come in two versions: mono-leaf (left) which is shallower than the multi-leaf (right). ALL72156. Pinion Nut FT. LBS. You have to do it a little differently though. It is essential to ensure that the pinion flange is firmly held in place with a fixture or tool. Final torque on the pinion nut is necessary to compress the crush sleeve. Dana Technical Service Specs. 7.25 12-14: 6-7: 6-10: 55: 50: 8 IFS: 12-15: 6-8: 6-10: 55: 60: 8.25 12-15: 6-8: 6-10: 55: 60: 8.75 - 41 Case: 13-15: 6-8: 6-10: 55: 90: 8.75 - 42 Case: 15-25: 7 . 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. 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. I like to measure the old crush sleeve and machine down a solid pinion spacer to that dimension and then . Rotating torque should be equal to the reading recorded during removal plus an additional 0.56 Nm (5 inch lbs.). Too much won't hurt anything other than break the bolt. Tightening Torque Clamp Load 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. Free Shipping - Yukon Gear & Axle Crush Sleeve Eliminator Kits with qualifying orders of $99. Some builders . 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. From there I make very minute changes, checking the pre load with the inch lb torque wrench several times. 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. Set the preload carefully (see "Set Up Specifications") so that the bearings will have a long life. Our custom-length driveshaft kits make it a breeze to get the perfect 67-72 C10 driveshaft length. I need the torque on the pinion nut for the rear differential. PINION PRELOAD NEW INCH LBS. All 8.6-inchrears have disc brakes, and 8.5-inch units have drum brakes. Not sure what to do here but I know I'm looking at a boat load of parts I do not have the money for right now so not sure what the hell I'm going to do. On the other hand, if your backlash is too wide you will need to adjust by moving the carrier towards the pinion with a similar measurement technique.
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