Cutting means ripping away metal. 1977 Chevy K20 Pickup 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. Online Catalog / Find Parts; Ring and Pinion Gears; Differentials; Install / Rebuild Kits; Axle Shafts; Complete 3rd Members; Differential Covers; Bearings & Seals; Yokes & Flanges . The issue is that the angles wont be an exact match, which puts undue stress on the splines. Before disassembly, we marked the bearing caps and kept the side bearing shims on the correct side. An airplanes fuselage can flex ever so slightly and not fracture, and you want some of the same characteristics for a street axle. Check the fitment of the stud. CV axles, or constant velocity axles, are specialized drivetrain parts that transmit motion from the transmission to the wheels of your front-wheel, rear-wheel or four-wheel drive. 1981 GMC K25 Pickup If sticky tires are used, youll quickly turn the 7.5-inch rear into a pile of unusable parts. Dont stress too much; it happens. Warn Premium Hubs $295.00. Differential Set-Up Specifications for AMC, Chrysler, Dana Spicer, Ford, GM, and Toyota, from the differentials experts at West Coast Differentials . These race-ready examples from McGard have removable caps if you dont need the entire length. Description. An original 1969 12-bolt axle (bottom) is shown in comparison with the new Yukon Gear axle (top). Gun-drilled axles are not as strong in terms of longitudinal force, so they cant take the bending forces experienced on the street. Take Zach R. for instance. Good luck finding one of these, however, as they are very popular among performance enthusiasts. The truck 12-bolt had two factory axle sizes. Manufacturers offer guidance for a particular vehicle, engine, transmission, and other factors, so you can select the correct axle shafts for your combination. His passion for performance got him noticed by many locals, and he began helping them modify their vehicles. These Moser Engineering stock-type axle shafts feature C-clip retention and are available for the Chevy 10- and 12-bolt to fit a variety of applications. The distance between thebottom center bolt in the cover and its adjacent bolts is 3 1/4 inches. The oval-shaped cover measures 8 5/16 inches by 10 9/16 inches. Well help you determine the correct flexplate for your Chevy engine in this buyers guide. When the bearings fail, the result is damage. MADE THE AMERICAN WAY IN THE USA! Insert the new stud from the back of the flange, then install the brake rotor over the flange. Most OEM axles are made from either 1039 steel (for flange-mount bearings) or 1050 steel (for C-clips). Eliminators retain the axle at the end of the axle tube flange, so if the axle breaks, the wheel does not come out of the car. 1985 Chevy K20 Pickup GM 8.25" FRONT AXLE / IFS 800 The axle is now ready for heat treating. The Problem: 10-Bolt Rear GM's 8.5-inch, 10-bolt rear axle is one of our least favorite -ton axles. The results are the same; a busted wheel stud and you have to drive around with one less lug nut on your car. Want the latest ORD news, sales, information, and general scuttlebutt? Therefore, the bearings need to be in good condition and the axle surface they ride on needs to be perfectly round and smooth. Drivetrain. 1985 Chevy K10 Pickup GM Chevrolet Axles For the best rebuilt GM axles, contact Houston Rebuilt Axles and see how much we can save you on an axle rebuild. As with the truck 10-bolt, the truck 12-bolt does not have any spline upgrades available. The most typical breakdowns of the rear end is the wheel bearings. DIFF BEARING AND SEAL REBUILD KIT. Other loads are at work on the axles as well. For example, a 700-hp full-race drag car with slicks and a transmission brake would put more stress on the driveline than a street-tired foot-brake car with 1,000 hp. So arbitrarily upgrading to a larger count costs you money that may be better spent elsewhere. With the flange retainer, four bolts and a plate keep the outer wheel bearing in the housing, and this retains the axle shaft inside the tube. - Dirt Every Day Extra MotorTrend Channel 6.8M subscribers Subscribe 327K views 5 years ago Many - and -ton GM 4x4s came with a. Dodge Rebuilt (Base Price) Call For Price. 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! The only stock axles available for the GM truck 10- and 12-bolt units are 28-spline, and this axle shaft fits only the 8.5-inch 10-bolt. Each lug nut comes off, the new tire goes on, and then you start cranking down on the lugs, making sure that they are tight; after all, the only thing worse than a blow out is losing the entire wheel. The wheel bearing end on the housing holds two components: the bearing and the seal. C-Clip Eliminators for GM 10 Bolt & 12 Bolt Axles with 1.533" bearing seat. Flycutting: Most machine shops can flycut axle shafts. siu automotive 19.1K subscribers Subscribe 3.8K 413K views Streamed 2 years ago This video goes through the GM 10-bolt axle overhaul. ( 1 ) Free Shipping. Or very different? The bearing is moved about 1 inch from the inside to the outside of the axle where it should ride on fresh steel. Next we disassembled everything, starting with the cross pin bolt, cross pin and C clips. Fits Strange Medium Duty & Heavy Duty Front Brake Kits *. The actual outside diameter (OD) of a 28-spline axle is 1.205 inches while the 30-spline axle is larger at 1.310 inches. The axle shafts are also held in place by four-bolt retainer plates at the outer bearing, not C-clips. Instead of replacing it, rebuild it! Part Number: GTA-20-2021-30. On this episode of Dirt Every Day Extra, Fred Williams and Dave Chappelle ask Offroad Designs Stephen Watson for some insight on these solid front axles and discuss which one you really want.https://www.motortrendondemand.com/subscribe/freetrial/?bnr=organic:bnr:yt:dede:ep233_fr_de:link:na:mtod Only rolled or hobbed splines have this shape. Rolling the splines into the axles does several things. Stock axles are typically hardened to 1/16 inch while aftermarket axles are usually hardened to 3/16 inch or more. 1987 GMC K15 Pickup Your Price: $268.10 Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. 2010 - 2016: 9.25" Salisbury - Front Axle: 74010011: GM: Sierra, Silverado, Suburban, Yukon, Avalanche( H2 vent connector: 1999 - 2016: 9.25" Clamshell - Front Axle: 40027570 vent connector deleted . 1977 Chevy K10 Pickup 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. 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. Starting at $27.00. Now that the hard part is done you can re install the carrier with the shims in place, torque the bearing caps and run one more contact pattern to make sure everything is good to go. GM 9.5" REAR AXLE / SALISBURY / 12 BOLT, AAM 976Series $31.00 Add to Cart GM Dana 44 and Corporate 10 Bolt Ball Joints, Spicer Brand. The hobbing process yields an accurate involute spline, and when done before the shaft is hardened is just about as accurate as a rolled spline. 1982 GMC K15 Pickup TruTrac Limited Slip call for price. 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. Add On Options. This can reduce the weight of an axle by as much as 17 to 26 percent. A Series 2 carrierwill work with 2.56 and higher gears (numerically lower) such as 2.41. Front Wheel Bearings 1966-77 Bronco. (Note: The 7.5 GM rear used different pinion bearings in 1979-80 vs. the 81-up axles, so you want to make sure that the old bearings match up to your new pinion bearings). Yeah, you really did it this time; you busted a wheel stud. And if you add more power and harder driving conditions, they simply must be capable of taking a beating. For the best experience on our site, be sure to turn on Javascript in your browser. If youre building a street car and want to improve performance, we all know the drill. 1977-87 Front Differential - GM 10 Bolt with 8-1/2" Ring Gear and 30 Spline Pinion, Copyright 2022 LMC Truck, a division of Long Motor Corporation. The 7.5 rearend uses an oval cover and the housing has two small cast-in protrusions near two of the bottom cover bolts. 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. The 8.5-inch 10-bolt also shares the same pinion shaft diameter as the more expensive 12-bolt. That way, you dont unknowingly spend money on something you really do not want. Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. An easy and common way to increase dragstrip ETs is to shave a little weight off the axle. Therefore, most custom axles are made with a different manufacturing method. That is theimpetus for why we decided to put this swap meet/junkyard identification guide together. Front Wheel Bearings 1947-59 Chevy & GMC Truck. 1980 Chevy K10 Pickup GM 8.5" 10 Bolt Eaton Style Clutch Posi Unit. Although the 7.5-inch 10-bolt closely resembles the 8.5-inch housing, you can positively identify the Chevy 7.5-inch rearend by measuring it. Revolution Master Overhaul Kits come with top quality Timken Bearings and National seals. Like most 10-bolts, the axles are held in place by C-clips on the inner end of the axles. GM 8.5" 10 Bolt Ring & Pinion Gear Set. 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This seats the stud to the flange and you are ready to mount a wheel. The store will not work correctly in the case when cookies are disabled. After that we removed the old bearings and cleaned all the parts up in the solvent tank. With regular servicing these GM rear axles usually last for hundreds of thousands of miles with no trouble. For example, a Buick Grand National 3.8 turbo has the reputation for hanging the front wheels well past the 60-foot mark on the dragstrip with the stock 8.5 10-bolt axle assembly. 1983 Chevy K20 Pickup Optional Upgrade to Solid Pinion Spacer. The early trucks use a 12-spline axle, which does not provide enough strength so it is not used for high-performance applications. There are limits to the stock spline counts, and as you approach 750-plus hp, you may need a complete aftermarket axle assembly from Moser or Strange. First, you must determine whether you are building a motor using the familiar two-piece rear main oil seal or with the new-style one-piece rear main seal that was first [Click here to read more], Upgrading your Chevy or GMC C10s suspension may seem like a daunting project, but its not that challenging if you take things slowly and approach the front first and then the rear. Their tech department will gladly answer any questions you have to ensure you get the right axles for your application. The more splines on the shaft, the larger the diameter of the axle. That being said, limited gear sets are offered for the carriers, especially if you plan to change gear ratios. Each spline is the same size whether the axle has 28 or 35 splines. Our Mopar flexplate buyers guide will help. Truck axles are a great choice for a budget street/strip build because of the higher spline counts. 1980 GMC K25 Pickup Now that we know our pinion depth shim is correct we can do the final assembly. The aftermarket offers the passenger car 12-bolt with larger 33- and 35-spline axles. You need to order a set of uncut axles with no bolt pattern or splines and have your local guy do the finish work. One Upper and One Lower, Two Kits Required Per Truck, Ultimate GM 8.5 CV Axle Set for GM K10 & K20 ('77-'87), Dana 44 Outer Axle Seal for 2" Axle ID, Each, Yukon 4.11 ratio ring & pinion for corporate 10 bolt front or rear, Yukon 5.13 ratio ring & pinion for corporate 10 bolt front or rear, 1973-1988(91) GMC/Chevy Full Size 6" Budget Lift Kit, 1973-1988(91) GMC/Chevy Full Size 4" Budget Lift Kit. By switching to a spool from a differential, you have more room for larger-diameter axles. 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. The OEM pinion nut is 1 1/4 inches. There is an anomaly to the corporate 8.5-inch axle assembly that was used in some 1971 and 1972 Buick, Oldsmobile, a few 1969 through 1972 Pontiac vehicles, as well as the 1970 through 1972 Monte Carlo. This is very important, because if you go too far the crush sleeve will be ruined. Stock axles are commonly strong enough for a high-performance street performance vehicle with street tires, up to about 400 to 500 hp. Certain GM axle assemblies use this design as well, specifically the Buick, Oldsmobile, and the occasional Pontiac 8.5-inch 10-bolt in A-Body cars. Not all Buick and Pontiac A-Bodies used the non-C-clip rear; finding one is really just a big crapshoot. Well show you what to look for in this buyers guide. The date and location of manufacture coding changed in 1971. (Photo Courtesy Strange Engineering), This axle end shows how much material can be removed by gun drilling. When it comes to Chevrolet rearends, its the 12-bolt that seems to get all the accolades. The 33-spline option requires an Eaton Truetrac gear-driven LSD. Thats usually proven when used in high-performance, high-horsepower applications. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. Unlike lesser engines, the evolution of the big-block Chevy can be traced back to a prestigious great-great-grand pappy, the high-performance 425-hp L78 396, first available in 1965 Corvettes and Chevelles. The 33-spline axles measure 1.41 inches, with a whopping 1.50-inch diameter in the 35-spline units. One other option for all three differentials is available: a spool. 1982 Chevy K10 Pickup Filed Under: Chevy Tech Tips, Differentials, Rebuilding, A few new areas should concern folks who are rebuilding small-block Chevys. In the 1950s, Corvettes were difficult to beat in stoplight races. It was used in different models by all GM divisions with the exception of Cadillac. JavaScript seems to be disabled in your browser. 9000. GM Genuine Parts and ACDelco are proud to work together as the only Original Equipment and aftermarket parts source backed by General Motors. Electric locker (10) . For the best experience on our site, be sure to turn on Javascript in your browser. Part Number: B4200-K4. $200.00. Dont worry; there is an easy fix. C-clips are by far the most common axle retainers, but they are also not legal for drag racing below 10.99 ET. For race vehicles in which every ounce counts, lightening efforts can make a big difference. Ductile strength is the metals ability to spring back from bending. If you can find one, your options greatly increase. We will safeguard your e-mail and only send content you request. 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, failures can occur. Dana 44s vs. Chevy 10-Bolt Front Axles: Which Is Better? This product cannot be ordered at this time. 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. When it is quenched, only the outer shell of the metal is hardened. An 8.2 (shown) will have the same contour as the cover. GM Corporate 8.5 inch 10 bolt front axle and differential parts including universal joints, axle shafts, wheel bearings, ball joints, spindles, gears, diff carrier, spider gears, bearing kits, shims, crush collar, seals, spindle nuts, pinion yokes and more at Denny's Driveshafts . Most aftermarket axle manufacturers offer custom cutting and splining services, but that means shipping them back and forth, which, of course, takes additional time and money. Once you give everything a thorough inspection you can begin the re-assembly process. One quick way to get there is by smoothing the firewall. 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. Maintaining your car's paint finish is essential to keep it looking great. Add to Wish List. Most axles are either 45 or 30 degrees. 1979 Chevy K20 Pickup The head of the stud should be flush with the backside of the axle hub. Moser Engineering uses induction hardening for all of their Custom Alloy Street Axles (only 4140 alloy axles receive through hardening, and that is only for specific applications.) Factory axles are typically necked-down several inches from the end while aftermarket axles remain at their full diameter right up to the start of the splined area. Strange Engineering uses Hy-Tuf alloy, which is proprietary steel. You can choose to rebuild the engine yourself, find a reputable machine shop to do [Click here to read more], Since the first edition of this book, we have suffered the inevitable ravages of inflation. All OEM axles and differentials use involute splines. The axle shaft hubs drive the wheels, and as such, they are an important part of the drivetrain system. Again, this would be okay in a daily driver or cruiser application, but if installed behind an engine with horsepower numbers climbing into the 400 range, you can plan on an eventual failure. Many times, if you locate a 10-bolt rearend, its usually a 7.5-inch unit. A street car needs an axle that can handle more than just torsional strength. Depending on your budget and power needs there are many ways to reach your goal. The pinion nut should also measure 1 1/8 inches, if the OEM pinion nut is still in use. A missing stud on an axle or rotor hub on the car can throw you off. Speedway Motors employees enjoy not only helping our customers, but also turning some wrenches in their downtime as well. C-clips are located past the splines on the axle in the center of the differential, so there is nothing keeping the axle inside the tube at the end of the housing. Lightweight cars, such as street rods and fiberglass-bodied dragsters, dont put as much stress on the axles as a full-size 1970 Buick GS, which tips the scales at 4,000 pounds. On a single page you may see several cam specs given, and many [Click here to read more], Cylinder Numbers andFiring Order The road conditions that exist in the United States can easily cause fractures on even a 40-spline through-hardened axle. Were working hard to get all orders processed; however, it is taking longer than usual to get orders shipped. Inside, the ring-gear bolts are the same as the 8.5 corporate unit, but the pinion-shaft diameter measures 1.438 inches. Wheel studs fail and its not uncommon when you are running a muscle car. Axles are simple components that have a long shaft with splines on one end and a flange on the other, which is drilled for the wheels. Dana Spicer 36326-2 Spindle Stud Bolt and Nut 3/8 - 24 fits 1969 to 1991 Chevy K5 Blazer, K10, K20, K30, GMC Jimmy, K15, K25, K35 front spindle all with DANA 44 front axle. Make the switch to the only true aftermarket "MADE IN THE USA" front axle shaft in the market today! On the end of each CV axle is a CV . Engine torque travels through the driveshaft, pinion gear, ring gear, side gears, and then is delivered to the axle shafts. The following process works on front hubs and rear axles. BOP stands for Buick/Oldsmobile/Pontiac. There are weight limits for drilled axles, so check with your manufacturer to ensure that your decision is a safe one. A press is the best method if you have one available. 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. 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. If you do not have an impact wrench, you can use a socket wrench, but you will need a way to lock the axle hub from spinning. GM 8.25" FRONT AXLE / IFS 900, AAM 860 Series Written by Jeferson Bryant and Posted with Permission of CarTechBooks. JavaScript seems to be disabled in your browser. Axles are the hardest-working component inside the housing, translating thousands of pounds of torque into forward motion and supporting the weight of the vehicle through rough street conditions. 2023 Power Automedia. GM 8.5" 10 Bolt Gear & Posi Package Description Package Includes: (1) Limited Slip Positraction Carrier (Choose Spline Count Above)(1) Ring and Pinion Gear Set (Choose Ratio Above)(1) Differential Master Install Kit - Our Rigid Axle Eaton style limited-slip positraction unit uses carbon fiber and steel friction p Rolling: The metal is forced into a set of rolling dies under extreme pressure, which changes the crystal structure of the metal itself. Its something you would expect from a performance part, rather than a mass-produced factory piece. . Add to Cart. Two kits required per axle. If you liked this article you will LOVE the full book. Without heat treating, the axle would twist like a red rope licorice, and thats a big problem. For the best experience on our site, be sure to turn on Javascript in your browser. Another key characteristic of the spline is its shape. Typically, 10-bolt differentials are specific to a series of gears. If you convert your housing to bolt-in axles, it is the same for your new axles. We started by getting a rebuilt kit from Motive Gear . However, the gears will not interchange with a Chevy 8.2. These protrusions are larger than those on the 7.5 rearend. Chevy Hardcore NEWSLETTER - SIGN UP FREE! Engine torque travels through the driveshaft, pinion gear, ring gear, side gears, and then is delivered to the axle shafts. Front Hub Assembly. Gear Ratio changes from 513 to 538 $375.00. Picking up a cam catalog doesnt necessarily help because of the number of choices. GM 7.6" FRONT AXLE / IFS Add To Cart. Most 8.2 factory covers also have the strangeprotrusionat the top. . Whats The Reason Enthusiasts Cant Get, Yes I Am A Dinosaur, And Why I Feel Electric Cars, OE Spotlight: Silverado HD Gets ZR2 Package And Updated Duramax, CP4 Fuel Pump Lawsuit Moves Forward For GM Truck Owners, Hawkeye Community College Adds QA1 Suspension To The C10 Chevy Truck, Light Up Your Sniper EFI System With A HyperSpark Master Kit, Fenix Is A Next-Gen 69 Camaro With 1,180 Horsepower, Shop Tour: Brian Tooley Racing Expands To Be A One-Stop Shop, Moroso Anti-Roll Kit Is The Right Tool For The Dragstrip. Heat treating is an important process that increases the strength of the axle shafts. Products. (Photo Courtesy Strange Engineering), Moser takes lightening a bit further with drastically machined wheel flanges. Speedway also offers the Economy Ring & Pinion Setup Tool we needed. 1987 Chevy K10 Pickup Spline failure is not that common, but it does happen, and it is usually a result of straight-cut splines.
