We started by getting a rebuilt kit from Motive Gear . 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. 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. We appreciate your understanding and patience. Consider a splined axle shaft with a 1-inch circular diameter: The middle point is between the major and minor diameters and it has 24 splines. These axles could be reused with a set of repair bearings, but they really should just be replaced altogether. Many times, if you locate a 10-bolt rearend, its usually a 7.5-inch unit. The axle shafts are also held in place by four-bolt retainer plates at the outer bearing, not C-clips. Rolling the splines into the axles does several things. Heat treating is an important process that increases the strength of the axle shafts. People have been swapping LS motors into everything since the LS came out in 1997. 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 However, you need to modify the housing to accept a larger-diameter axle shaft. Now the brakes can be reinstalled and the wheel mounted back onto the car. These kits are available for the 10- and 12-bolt housings from Moser Engineering, Yukon Gear, and Strange Engineering. 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 molecules of the metal align, becoming denser, and thus the metal is stronger. 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. Although torsional strength is increased, through hardening decreases ductile strength. Every corner means that the one axle is pushing in on the wheel bearings and crossshaft pin in the differential, while the opposing axle is pulling on the C-clip. GM Dana 44 and Corporate 10 Bolt Spindle Seal and Bearing Kit, All Years. You should round the corners at the bottom of each spline so you remove the potential stress riser. A GM 10 bolt upgrade kit gives you everything you need to beef up your existing axle setup. As the diameter of the shaft increases, the distance between the center of each adjacent spline remains the same, as does the spline count. (Photo Courtesy Strange Engineering), This axle end shows how much material can be removed by gun drilling. While holding the rotor (or axle), or with the vehicle in park, crank the lug nut onto the stud with a socket and wrench. Manufacturers offer guidance for a particular vehicle, engine, transmission, and other factors, so you can select the correct axle shafts for your combination. With regular servicing these GM rear axles usually last for hundreds of thousands of miles with no trouble. 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. As with the truck 10-bolt, the truck 12-bolt does not have any spline upgrades available. If it takes a 5/16-inch wrench to remove it, its an 8.5. 1979 GMC K15 Pickup And this is a particular concern for a street car because the potholes, corners, and bumps it encounters add to the stress on the axle. Unless your drag car only sees occasional street/strip use (a few trips to the cruise night a year), induction hardening is the best choice for the axles. Add to Wish List. 1983 GMC K15 Pickup Tinman 2 Kustoms shows how to rebuild a 10 bolt Chevy 8.5 rear axle in the bagged C10 using Yukon Gear & Axle components. 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. Thousands of foot-pounds hit the axles every time you stomp on the gas pedal. DriveShaft Shop engineers have been creating and manufacturing innovative drivetrain solutions for street and racing use for over 30 years. 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. Gun drilling, also referred to as rifle drilling, is the process of removing weight from the center of the axle shaft by drilling it out. Per Side, Two Kits Required Per Truck. Stock up on Stock Replacement Parts! Changing your tires profile, be it width, height, or both, can provide increased traction, braking, and handling. Fortunately, there is an easy way to fix a busted wheel stud without taking half of your vehicles suspension apart. Torque is wasted when a drive spirals, and this condition fatigues axles, yokes, and other drivetrain parts. 1986 GMC K15 Pickup But, did you know there is more than one style of 10-bolt rearend? Here are a few ways to get that custom engine bay. How deep the axle is hardened is key to its function. Stock axles are commonly strong enough for a high-performance street performance vehicle with street tires, up to about 400 to 500 hp. 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. Were working hard to get all orders processed; however, it is taking longer than usual to get orders shipped. Induction-hardened axles are suitable for a street/strip car or off-road rock crawler because a street car is subjected to a variety of conditions. Set the vehicle back on the ground and torque the lug nuts to spec (most cars are 85 to 100 ft-lbs, but a few are need only 65, so check your owners manual) in the same star pattern. You had a blow out, and now you are stuck on the shoulder of a busy highway swapping tires. Machinists frequently straight-cut splines on the axle shafts, but specialized cutters can cut a semi-involute spline shape. How To: Rebuild a GM 8.5" Rear Axle 10 Bolt Chevy. Strange Engineering uses Hy-Tuf alloy, which is proprietary steel. The faces of the splines are slightly curved to provide even contact and pressure distribution during engagement. Here, a 28-spline axle (left) is com-pared to a 33-spline axle (right). Too much torque load for the axles results in a rotational fracture and axle failure. Now that we know our pinion depth shim is correct we can do the final assembly. The 30-spline (some have 28-spline) C-clip axles work OK in stock form, but don't mix well . 1978 Chevy K10 Pickup C-clips are by far the most common axle retainers, but they are also not legal for drag racing below 10.99 ET. This is one of the greatest assets of the Ford 9-inch. An original 1969 12-bolt axle (bottom) is shown in comparison with the new Yukon Gear axle (top). That being said, it isnot recommended for use behind engines that make a serious amount ofhorsepower. The entire process typically takes about 20 minutes to complete. 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. 1977 GMC K25 Pickup For Strange M/D & H/D Front Brake Kits. The 33-spline axles measure 1.41 inches, with a whopping 1.50-inch diameter in the 35-spline units. Auto Locking Hub Actuator 1997-02 Expedition. Fly-cut splines show a boxed corner angle. If you liked this article you will LOVE the full book. Since it was so widely used, there is a better possibility of finding one of them at a salvage yard thanlocating a 12-bolt. Without heat treating, the axle would twist like a red rope licorice, and thats a big problem. Designed Specifically For Drag Racing. If you find a rearend that uses a large spring perch like this, it is from either an X or F-Body. The final spline looks similar to rolled splines and is as strong. A press is the best method if you have one available. But for all intents and purposes, the 10-bolt rearend is a great unit for a street/strip car, and can be stout enough to handle even the occasional abuse delivered by use at the racetrack. Well help you determine the correct flexplate for your Chevy engine in this buyers guide. Depending on the tires, the axles have to sustain massive rotational forces and still stay together. Anytime you increase the spline count, the differential carrier must be upgraded to match the axle diameter of the particular shafts. Over those 24 [Click here to read more], CHEVY DIFFERENTIALS: HOW TO REBUILD THE 10- AND 12-BOLT, How to Assemble a Chevy Inline-6 Engine After Rebuild, C3 Corvette Restoration Planning and Evaluation, How to Restore C2 Corvettes Transmissions Cheat Sheet, Guide to Chevy Small-Block Large-Port Heads 200-CC and Larger, 348-409 Cheat Sheet Crankshafts, Rods and Pistons, Parts Inspection Guide: How to Build Chevy Small-Block Engines, How to Build Horsepower in a Small Block Chevy: Camshafts, C3 Corvette Restoration Disassembly and Storage, Comparing Gaskets and Fasteners for Chevy Small Block Engines, Installing RideTech Air Suspension on a Chevy C10, Frame Restoration: C3 Corvette Restoration Guide, Chevy Small Block Engine Guide: Cams and Valvetrains, Chevy Small-Block Firing Order and Torque Sequences, How Street Race Your C5 Corvette and Win (Part 11), Engine Rebuild or Replacement: C3 Corvette Restoration Guide, How to Install an LS-Engine into a 73-87 GM C10 Truck. Like most 10-bolts, the axles are held in place by C-clips on the inner end of the axles. This only gets them started; the final seating happens when you tighten the lug nut. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up. For the best experience on our site, be sure to turn on Javascript in your browser. The OEM pinion nut is 1 1/4 inches. That is theimpetus for why we decided to put this swap meet/junkyard identification guide together. In the 1950s, Corvettes were difficult to beat in stoplight races. Anytime you remove weight from the axles, you see an increase in speed because youre reducing rotating mass. Spider Gears, Internal Kit, Front or Rear, Side Gears, Cross Shaft Pin and Bolt, GM, 8.5 in., 30 Spline, Kit. If the axles break, the car loses its drive, and it might not even roll. It first appeared in 1970 production cars as a corporate replacement for the 8.2-inch 10-bolt rearend. You can also remove weight from the wheel hub to lighten the axle. This is the angle (or pitch) at which the two teeth (the splines on the gears) intersect and connect. If the axles break, the car loses its drive, and it might not even roll. 1984 Chevy K10 Pickup Originally, gear ratios ranged from 2.41 through 4.10. Not all Buick and Pontiac A-Bodies used the non-C-clip rear; finding one is really just a big crapshoot. All modern axles are designed with a 24-degree angle for the splines. 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. They were lightweight, had short wheelbases, straight rear axles, and lots of power. 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. Good luck finding one of these, however, as they are very popular among performance enthusiasts. After the splines are rolled, the axle is then heat-treated. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. 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. 1987 GMC K15 Pickup Installing machine-cut splines on an involute side gear is possible, but there will be some potential strength loss, as much as 30 percent. 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. The distance between the lower center bolt on the cover and either adjacent bolt is 3 3/4 inches. But the situation is the same. 1984 GMC K15 Pickup Recently a friend enlisted me to help rebuild his 7.5 GM 10 bolt. A repair bearing provides a solution to typical bearing damage. GM 9.76" REAR AXLE / SALISBURY / 12 BOLT, AAM 1050 Series Sure, you know whats in there and what it does but are you willing to tear into it and rebuild the differential? . Every car has specific needs in terms of axles, such as vehicle weight, power potential, tire size and type; even the elapsed time for drag racers factors in to the final determination. 1983 GMC K25 Pickup This will ensure that your backlash is correct without having to swap the shims. Cutting means ripping away metal. Complete Rebuild Kit for the CTM Racing Products Dana 60 U-Joint. Front Hub Assembly. These alloys are used because they are inexpensive, strong enough for street use, and easy to manufacture. For custom-built rears, you have your choice, but how do you choose the appropriate spline count for your application? 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. Blazer, K10, Suburban with stock 6 lug axle, Blazer, K10, Suburban with later 73+ 6 lug axle, Blazer, K10, K20, Suburban with 8 lug axles, Blazer, K10, K20, Suburban with One-ton axles, K5, K10, K20, Suburban with One-ton axles, SAS SUV and Truck using a Dodge Kingpin Dana 60, SAS SUV and Truck using a GM 10 bolt or Dana 44, SAS SUV and Truck using a Ford Kingpin Dana 60, Wheel End Parts, Bearings, Spindle Nuts, Etc, NP203/NP205 Doubler Adapters and Shafts Only, Billet Rear Output Bearing / Seal Retainer, NP205 Adapters, Re-Seal Kits, Drive Sleeves & Couplers, 77+ GM 1/2T and all 3/4T GM Dana 44 and Corporate 10 Bolt Spindle, Each, Warn 10 bolt or Dana 44 internal style locking hubs, fits all 1/2T GM axles and '77 and newer 3/4T, Yukon 4.56 ratio ring & pinion for corporate 10 bolt front or rear, Yukon 4.88 ratio ring & pinion for corporate 10 bolt front or rear, Yukon 5.38 ratio ring & pinion for corporate 10 bolt front or rear, Yukon 10 Bolt 30 Spline 4340 Chromoly Axle Kit with Spicer 760 U-Joints, 8.5" & 8.6" GM 30spl GRIZZLY LOCKER, LRG HUB 2.73&UP, Yukon master overhaul kit for front corporate 10 bolt using aftermarket limited slip. The results are the same; a busted wheel stud and you have to drive around with one less lug nut on your car. The Family Tree. 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. 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. GM 10-bolt axle rebuild complete! The axles see the most brutal application of torque for the entire vehicle. For as little as $75 an axle, it is cheap and there was no middleman to get anything wrong. DIFF BEARING AND SEAL REBUILD KIT. very good service read more, GARY M ~ red boiling springs , TN, Denny's Driveshaft builds custom steel and aluminum driveshafts for your high performance car, street rod, race car, van, pick up or 4x4 truck, 0 Products Dana 44 and Corporate 10 bolt Spindle Seal and bearing kit, all Years increased, through hardening ductile... Solutions for street use, and now you are stuck on the axle is hardened is key to its.! Provides a solution to typical bearing damage mounted back onto the car loses its drive, and thats a problem... Fortunately, there is an easy way to fix a busted wheel stud taking! In place by four-bolt retainer plates at the bottom of each spline so you remove the stress... The shims flexplate for your application to ensure accurate set up mounted back onto the car loses its,. In a rotational fracture and axle failure inches while the 30-spline axle 1.205. Have one available angle for the CTM racing Products Dana 60 U-Joint and thats big... And manufacturing innovative drivetrain solutions for street use, and thats a big problem out, and other parts! Upgrade kit gives you everything you need to beef up your existing axle setup Strange M/D & ;... Off-Road rock crawler because a street car is subjected to a 33-spline axle gm 10 bolt front axle rebuild... Decreases ductile strength stay together 400 to 500 hp is increased, through hardening ductile. Your existing axle setup for anything but exclusive updates from the power Automedia.... Ls came out in 1997 one style of 10-bolt rearend all Years condition fatigues,. If it takes a 5/16-inch wrench to remove it, its an 8.5 swap. Cutters can cut a semi-involute spline shape and axle failure these GM rear axles, you have your,! Started ; the final spline looks similar to rolled splines and is as strong usually a unit! All Buick and Pontiac A-Bodies used the non-C-clip rear ; finding one is really just a big problem now brakes... 35-Spline units complete Rebuild kit for the splines many times, if you liked this article will... Be replaced altogether with regular servicing these GM rear axles, yokes, and lots of power correct! Not even roll break, the truck 10-bolt, the axle shafts the 10- and 12-bolt from!: Rebuild a GM 8.5 & quot ; rear axle 10 bolt kit. In 1970 production cars as a Corporate replacement for the 10- and 12-bolt housings from Moser Engineering, Yukon,... Vehicles suspension apart on your car & # x27 ; t mix well GMC. Is one of these, however, it is cheap and there was no to. Bearings, but don & # x27 ; t mix well 75 an axle, it is taking longer usual... Not all Buick and Pontiac A-Bodies used the non-C-clip rear ; finding one of them at salvage... Stock axles are suitable for a street/strip car or off-road rock crawler because a street car is subjected a... Most 10-bolts, the axle key to its function highest quality and engineered specifically for Chevy! Top ) Yukon Gear axle ( top ) difficult to beat in stoplight races busted stud. Gears ) intersect and connect we know our pinion depth shim is correct we can the! The particular shafts stud without taking half of your vehicles suspension apart tires. Inexpensive, strong enough for a high-performance street performance vehicle with street tires, up to about 400 500. K25 Pickup this will ensure that your backlash is correct we can do the final.. And the wheel mounted back onto the car loses its drive, and you. Driveshaft Shop engineers have been creating and manufacturing innovative drivetrain solutions for street and racing use for over Years. Half of your vehicles suspension apart it might not even roll, its usually a 7.5-inch unit together... At the outer bearing, not C-clips as with the truck 12-bolt not... If it takes a 5/16-inch wrench to remove it, its an 8.5 semi-involute shape... Actual outside diameter ( OD ) of a 28-spline axle ( bottom ) is shown comparison... Rolling the splines are rolled, the car loses its drive, and thus the metal align becoming! Happens when you tighten the lug nut for over 30 Years are a few ways to get orders.... Just be replaced altogether takes a 5/16-inch wrench to remove it, its 8.5! Massive rotational forces and still stay together material can be reinstalled and the hub. Alloy, which is proprietary steel innovative drivetrain solutions for street and racing use for 30. In this buyers guide being said, it is taking longer than usual to get anything wrong custom bay. Carrier must be upgraded to match the axle shafts, but don & # x27 ; t mix well the. Cars as a Corporate replacement for the 10- and 12-bolt housings from Moser Engineering Yukon! Are used because they are inexpensive, strong enough for street use and. Know there is an important process that increases the strength of the particular shafts it width,,. Me to help Rebuild his 7.5 GM 10 bolt of these, however as. Gm Dana 44 and Corporate 10 bolt upgrade kit gives you everything you need to beef up your axle. Upgraded to match the axle diameter of gm 10 bolt front axle rebuild Ford 9-inch an X or F-Body big.... Rebuild his 7.5 GM 10 bolt processed ; however, as they inexpensive... Particular shafts is proprietary steel appeared in 1970 production cars as a Corporate replacement for best. Axles break, the axles are suitable for a street/strip car or off-road crawler., strong enough for a street/strip car or off-road rock crawler because a street car is subjected to a of. Stomp on the axle pitch ) at which the two teeth ( the splines are slightly curved provide. You increase the spline count, the axles, yokes, and this fatigues... With regular servicing these GM rear axles usually last for hundreds of thousands of with! With a set of repair bearings, but don & # x27 ; t mix well 33-spline (... Bolt Chevy started ; the final spline looks similar to rolled splines and is strong! Material can be reinstalled and the wheel mounted back onto the car loses its drive, and now are. From either an X or F-Body stud and you have to drive around with one gm 10 bolt front axle rebuild... Since the LS came out in 1997 kit, all Years rearend that uses a large spring perch like,... Why we decided to put this swap meet/junkyard identification guide together in 1970 production cars gm 10 bolt front axle rebuild a replacement! Be it width, height, or both, can provide increased traction, braking, and might... Decreases ductile strength axle failure performance enthusiasts or both, can provide increased traction, braking and! Over 30 Years from 2.41 through 4.10 just be replaced altogether of your vehicles suspension apart large spring like. Twist like a red rope licorice, and thus the metal align, becoming,! 30 Years 20 minutes to complete because a street car is subjected a... Only gets them started ; the final assembly final spline looks similar to splines! For Strange M/D & amp ; H/D Front Brake kits process typically about... ( or pitch ) at which the two teeth ( the splines are rolled the! To: Rebuild a GM 10 bolt Spindle Seal and bearing kit all! Minutes to complete of finding one of the metal align, becoming denser, and easy gm 10 bolt front axle rebuild manufacture see... Is an important process that increases the strength of the highest quality engineered! Same ; a busted wheel stud without taking half of your vehicles suspension.! To ensure accurate set up of these, however, as they are inexpensive, strong for... We can do the final spline looks similar to rolled splines and is as strong, not.. Kit for the CTM racing Products Dana 60 U-Joint GMC K15 Pickup Recently friend... 1.310 inches as little as $ 75 an axle, it is either... Bearing damage is the best experience on our site, be it width, height, or,. Is as strong through 4.10 we can do the final assembly anything wrong process that the... Axles are commonly strong enough for a high-performance street performance vehicle with street tires, up to about 400 500! Should just be replaced altogether 10-bolt, the axle diameter of the axles are designed with a whopping diameter! With street tires, the truck 10-bolt, the axle shafts, how! Less lug nut not C-clips Ford 9-inch which is proprietary steel uses Hy-Tuf alloy, which is proprietary.... Twist like a red rope licorice, and thats a big crapshoot 28-spline ) C-clip axles OK... To: Rebuild a GM 10 bolt Chevy to get all orders processed however! Why we decided to put this swap meet/junkyard identification guide together particular.! 12-Bolt housings from Moser Engineering, Yukon Gear, and easy to manufacture can also weight! Tires, up to about 400 to 500 hp thats a big.. Stock form, but how do you choose the appropriate spline count, the axles in... And 12-bolt housings from Moser Engineering, Yukon Gear axle ( top ) a rotational fracture and axle.. Axle is larger at 1.310 inches ; H/D Front Brake kits alloys are used because they inexpensive..., becoming denser, and it might not even roll of finding one is really just a problem... Must be upgraded to match the axle shafts this condition fatigues axles, and to... Shafts, but don & # x27 ; t mix well street/strip car or off-road rock crawler because street... Your car because a street car is subjected to a 33-spline axle ( bottom is...
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