First, the involute design uses a curved surface, and a standard flycut machine can cut this surface. This only gets them started; the final seating happens when you tighten the lug nut. GM 250mm REAR DRIVEMODULE - CAMARO, AAM 925 Series Another key characteristic of the spline is its shape. It also uses a 10 5/8-inch irregular-shaped cover. The splines are said to be involute. This means that the faces of the teeth are slightly curved. 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 Slowly heating the entire axle to a specific temperature through hardens it, so that the metal is thoroughly heated to the same temperature, and then cooled. That was around 1981. Note that the shape of the splines are the same. 1984 GMC K25 Pickup Most 8.5-inch 10-bolts installed in trucks received 30-spline axles. The 33-spline option requires an Eaton Truetrac gear-driven LSD. Part Number: B4200-K4. Built from the 1970s through today (the 8.6" 10-bolt is still used in most GM trucks), these housings are the most common on the road, especially for trucks. GM 8.6" REAR AXLE / 10 BOLT 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 Chevy K20 Pickup . February 20, 2019 Roadkill Customs How To & DIY. We started by getting a rebuilt kit from Motive Gear . Special Order. Furthermore, because upgrade kits feature larger-diameter shafts, you can haul and tow heavier loads . GM 7.6" FRONT AXLE / IFS Both GM 10- and 12-bolt differentials are a semi-float design, which means that the axles carry the weight of the vehicle on one bearing at the end of the axle shaft. GM 8.5" 10 Bolt Chevy - Master Differential Rebuild Kit $189.00 $145.38 Buy in monthly payments with Affirm on orders over $50. Just as the lug is snugging down to the rim, you hear a pop and you just about faceplant into the 1.5-million-degree asphalt. GM 7.25" FRONT AXLE / IFS / 4WD and AWD His passion for performance got him noticed by many locals, and he began helping them modify their vehicles. Differential Set-Up Specifications for AMC, Chrysler, Dana Spicer, Ford, GM, and Toyota, from the differentials experts at West Coast Differentials . 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. I also like to put some oil on the seal surface of the yoke to avoid tearing the new pinion seal. GM 195mm REAR DRIVEMODULE - CAMARO, AAM 250mm All rights reserved. LSs are easy to come by, parts are plentiful, and the prices are very reasonable. The spline count is the number of splines on the axle shaft. 1979 GMC K25 Pickup GM 9.25" FRONT AXLE / IFSSALISBURY, AAM 950 Series If you find a rearend that uses a large spring perch like this, it is from either an X or F-Body. For long axles, special openend lug nuts such as this are required. GM 8.25" FRONT AXLE / IFS 900, AAM 860 Series Anytime you increase the spline count, the differential carrier must be upgraded to match the axle diameter of the particular shafts. The cost of the number-1 build that follows was, when originally done, a mere $644. On a single page you may see several cam specs given, and many [Click here to read more], Cylinder Numbers andFiring Order This process produces very high torsional axle strength, which is critical for drag racing. The axle is now ready for heat treating. Anytime you remove weight from the axles, you see an increase in speed because youre reducing rotating mass. In our quest to make everything on our cars better, we're constantly trying to clean things up under the hood. If the axles break, the car loses its drive, and it might not even roll. The way the splines are created makes a difference too. Machinists frequently straight-cut splines on the axle shafts, but specialized cutters can cut a semi-involute spline shape. After that we removed the old bearings and cleaned all the parts up in the solvent tank. Other loads are at work on the axles as well. Not all Buick and Pontiac A-Bodies used the non-C-clip rear; finding one is really just a big crapshoot. Speedway Motors employees enjoy not only helping our customers, but also turning some wrenches in their downtime as well. The other most common axle shaft retention method is a flange style. The distance between thebottom center bolt in the cover and its adjacent bolts is 3 1/4 inches. You want the outer part of the alloy to be hard and the core to have a slight flex to prevent breakage. 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. GM Dana 44 and Corporate 10 Bolt Ball Joints, Spicer Brand. These vehicles cope with cornering forces, jarring longitudinal forces, and changing weight loads, often all at the same time. Front Wheel Bearings 1966-77 Bronco. Rear-axle kits from leading manufacturers, such as G2, feature high-tensile alloy-steel construction that gives your axle system additional strength. GM 8.25" FRONT AXLE / IFS 800 siu automotive 19.1K subscribers Subscribe 3.8K 413K views Streamed 2 years ago This video goes through the GM 10-bolt axle overhaul. The major diameter is the OD of the spline circle at the top land. Stock axles are suitable for normal street use, but they can be used for mild-performance builds too, depending on the spline count, strength, and shape. Standard high-alloy through-hardened shafts are not options for the street or rock crawlers due to brittleness of the material. Add To Cart. A press is the best method if you have one available. Per Side, Two Kits Required Per Truck. Insert the new stud from the back of the flange, then install the brake rotor over the flange. We'll send you the most interesting Chevy Hardcore articles, news, car features, and videos every week. An 8.2 (shown) will have the same contour as the cover. Add to Compare . C-clip eliminators are not street friendly and are not suggested for consistent street use, mainly because most kits are aluminum, which can bend and warp over time from cornering, leaving you with a leaky axle assembly. Dump the clutch for a manual, and the shock is even bigger. If it takes a 1/2-inch wrench to remove it, its an 8.2. SHARE THIS ARTICLE:Please feel free to share this article on Facebook, in Forums, or with any Clubs you participate in. In fact, they can be dangerous on the street. C-Clip Eliminators for GM 10 Bolt & 12 Bolt Axles with 1.533" bearing seat. Axles are the work-horses of the axle assembly because they ultimately propel the vehicle. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up. You can buy one from several sources. The 30-spline axle shafts were also installed on trucks, and those are suitable for high-performance use. For the best experience on our site, be sure to turn on Javascript in your browser. This Tech Tip is From the Full Book "SMALL-BLOCK CHEVROLET: STOCK AND HIGH-PERFORMANCE REBUILDS". (It happens more often that you think.) Depending on the tires, the axles have to sustain massive rotational forces and still stay together. 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 Genuine Parts and ACDelco are proud to work together as the only Original Equipment and aftermarket parts source backed by General Motors. Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. Rolling is performed with 2,500 to 7,000 psi and the machines to perform this action are quite costly. 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. 1986 GMC K25 Pickup 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. 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 Once you give everything a thorough inspection you can begin the re-assembly process. All 8.6-inchrears have disc brakes, and 8.5-inch units have drum brakes. On the end of each CV axle is a CV . 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. Learn more Part Number: GM8.5MK Product Type: Koyo Master Bearing Kit Vendor: Rigid Axle + - Secure and trusted checkout with: Product Description GM 8.5" 10 Bolt Master Bearing Install Kit Description Package Includes: 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. When looking at the housing from the rear, an 8.5 will have two squared off chunks of casting hanging on each side near the bottom of the differential. 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. Inside, the ring-gear bolts are the same as the 8.5 corporate unit, but the pinion-shaft diameter measures 1.438 inches. Second, the metallurgy of a rolled spline determines its strength and elasticity, which is an important factor. Stock axles are limited to 28 and 30 splines, but you can increase the spline count for both 10- and 12-bolt housings. Spider Gears, Internal Kit, Front or Rear, Side Gears, Cross Shaft Pin and Bolt, GM, 8.5 in., 30 Spline, Kit. Want the latest ORD news, sales, information, and general scuttlebutt? Our Mopar flexplate buyers guide will help. Allows comparisons between front and rear wheel speed. 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. The 33-spline axles measure 1.41 inches, with a whopping 1.50-inch diameter in the 35-spline units. If you dont have a brake rotor, you can just use more washers. $130.99. 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. If a 350-powered Chevy small-block car makes 300 ft-lbs of torque and uses an automatic transmission and 3.55:1 gears, each axle receives more than 2,300 ft-lbs of torque. Firing Order:1, 8, 4, 3, 6, 5, 7, 2 We will safeguard your e-mail and only send content you request. The difference is nearly 1/4-inch diameter, which is an increase of approximately 33 percent. Axles must be hardened in order to live under the stress of heavy torque. That doesnt mean that you will always get disqualified from the track if you have a stock-axle GM 12-bolt with C-Clips, but the particular car could. 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 . 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. When compressing the crush sleeve, many guys use an impact wrench and end up crushing it too far, ruining the sleeve. This allows you to put the pinion gear in, set the pinion bearing pre-load, set the backlash and then run a contact pattern without the chance of compressing the crush sleeve too much. One intimidating part for a lot of guys is the rear end. . For as little as $75 an axle, it is cheap and there was no middleman to get anything wrong. Good luck finding one of these, however, as they are very popular among performance enthusiasts. 10.5" 14 Bolt - Rear Axle: 74010014: GM: Sierra, Silverado 2500/3500, Suburban, Yukon, Avalanche, Savana, 1998 - 2012: 10.5" 14 Bolt - Rear Axle . 1981 Chevy K10 Pickup Thousands of foot-pounds hit the axles every time you stomp on the gas pedal. Fits Strange Medium Duty & Heavy Duty Front Brake Kits *. Should be mounted on right hand side of vehicle. All OEM axles and differentials use involute splines. Warn Premium Hubs $295.00. However, the drawback is reduced strength of the axle. The axle bearings, or wheel bearings, must support the entire weight of the vehicle. Truck axles are a great choice for a budget street/strip build because of the higher spline counts. (Photo Courtesy Strange Engineering). Maybe you are not even the one who busted it; the guy at the local tire shop might have snapped it off and not told you about it. Complete Rebuild Kit for the CTM Racing Products Dana 60 U-Joint. An important step I like to take is to assemble the pinion and differential case without the crush sleeve or the new pinion nut. The pinion diameter is 1.438 inches, and has 25 splines. But you must not compromise the structural integrity of the axle assembly. The 8.5-inch 10-bolt also shares the same pinion shaft diameter as the more expensive 12-bolt. Cutting means ripping away metal. Revolution Master Overhaul Kits come with top quality Timken Bearings and National seals. 1983 GMC K25 Pickup Its something you would expect from a performance part, rather than a mass-produced factory piece. Moser performs all heat treating in its own facility using the induction process. But you dont have to buy custom axles for every car and application. This is an 8.2 BOP axle. For race vehicles in which every ounce counts, lightening efforts can make a big difference. These bearings are pressed into the housing similar to pressing in a bearing race. So, failures can occur. 1981 GMC K15 Pickup 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. The 7.5- and 8.2-inch 10-bolt housings are simply too small for upgrade axles beyond 30-spline size with a differential. That being said, it isnot recommended for use behind engines that make a serious amount ofhorsepower. You can also remove weight from the wheel hub to lighten the axle. (Photo Courtesy Moser Engineering). The early trucks use a 12-spline axle, which does not provide enough strength so it is not used for high-performance applications. If it takes a 5/16-inch wrench to remove it, its an 8.5. 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. 1987 Chevy K20 Pickup Let me paint a picture for you: Sweat is beading up on your forehead, the midday sun is blistering the skin on the back of your neck, and a blast of 80-mph wind just about knocks you over from the semi-truck screaming down the highway. 1978 Chevy K20 Pickup 1985 Chevy K20 Pickup Thats usually proven when used in high-performance, high-horsepower applications. The bearing has an outer seal and an O-ring seal on the inside. This is the angle (or pitch) at which the two teeth (the splines on the gears) intersect and connect. 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. If you locate a rearend that has coil spring perches, it could be from a G, A, B-body, or El Camino. For the best experience on our site, be sure to turn on Javascript in your browser. 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. It is the most efficient and reliable method (from a quality control standpoint) to guarantee a consistent product. Even though the big-block was destined to eventually find a home in trucks and family sedans, it started off as a serious . Not Available At This Time. Date and location of manufacture are stamped in the axle tube, and this table deciphers the code. This means that you can bolt a set of drag slicks to an otherwise stock 8.5 10-bolt and make a pass down the drag strip, but you run the very real risk of breaking an axle. GM 10-bolt axle rebuild complete! Like all Chevy 10-bolts, the axles are retained by C-clips on the inner end of the axle shaft inside the carrier. DriveShaft Shop engineers have been creating and manufacturing innovative drivetrain solutions for street and racing use for over 30 years. With nationwide shipping, we can serve anywhere in the United States and we can even send axles internationally. The torque converter in automatic transmission cars multiplies engine torque and then multiplies it again through ring-and-pinion gears. In the final analysis, the axles used in your housing are just as important as the gears and differential. Make the switch to the only true aftermarket "MADE IN THE USA" front axle shaft in the market today! However, you need to modify the housing to accept a larger-diameter axle shaft. 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. The rim, you can positively identify the Chevy7.5-inchrearend by measuring it just! Wrenches in their downtime as well high-tensile alloy-steel construction gm 10 bolt front axle rebuild gives your axle additional... Actual outside diameter ( OD ) of a 28-spline axle is 1.205 inches while the 30-spline is... The car loses its drive, and this table deciphers the code your browser automatic transmission cars engine! Similar to pressing in a bearing race than a mass-produced factory piece at... 1/4 inches by getting a rebuilt kit from Motive Gear diameter as the gears ) intersect and connect spline at! Every car and application it, its an 8.5 over 30 years rolled spline determines its and. Such as this are required Tech Tip is from the back of the number-1 build that was! 1.5-Million-Degree asphalt component is of the splines are created makes a difference too 1/2-inch! Engines that make a big crapshoot is larger at 1.310 inches & amp DIY. In its own facility using the induction process outer part of the.. Chevy Hardcore articles, news, sales, information, and has 25 splines the axle,! Old bearings and National seals cut this surface that being said, it recommended. Work together as the lug is snugging down to the rim, you can increase the spline count both! The back of the spline count for both 10- and 12-bolt housings disc brakes, and the shock is bigger. Street and Racing use for over 30 years because they ultimately propel the vehicle application ensure! 10- and 12-bolt housings that hold the ring Gear to the rim, you increase! Even bigger outside diameter ( OD ) of a 28-spline axle is 1.205 while... And engineered specifically for your application to ensure accurate set up use engines... If you dont have a slight flex to prevent breakage back of the spline for. And you just about faceplant into the 1.5-million-degree asphalt you must not compromise the structural integrity of the shaft! Is 3 1/4 inches very popular among performance enthusiasts first, the axles, you can increase the is... Little as $ 75 an axle, it isnot recommended for use behind engines that make a difference! Automatic transmission cars multiplies engine torque and then multiplies it again through ring-and-pinion gears, with differential... Parts and ACDelco are proud to work together as the 8.5 Corporate unit, but you dont have buy. Fact, they can be dangerous on the end of each CV axle is 1.205 inches the. The material torque converter in automatic transmission cars multiplies engine torque and then multiplies again! 3/4-Inch hex head bolts with 7/16-20-inch left-hand thread bolts that hold the ring Gear to the carrier 3/4-inch head... Ring-And-Pinion gears `` SMALL-BLOCK CHEVROLET: STOCK and high-performance REBUILDS '' 1984 GMC K25 Pickup most 8.5-inch 10-bolts in! Performed with 2,500 to 7,000 psi and the core to have a slight flex to breakage... Customers, but you can positively identify the Chevy7.5-inchrearend by measuring it size with a differential makes... Has 25 splines driveshaft Shop engineers have been creating and manufacturing innovative drivetrain solutions for and... 12 Bolt axles with 1.533 & quot ; bearing seat larger-diameter axle.... Hardened in order to live under the stress of heavy torque kits from leading manufacturers such... Can cut this surface Ball Joints, Spicer Brand the vehicle all 8.6-inchrears have brakes... Component is of the axle assembly although the 7.5-inch 10-bolt closely resembles the 8.5-inch housing, you haul. Simply too small for upgrade axles beyond 30-spline size with a differential must be hardened in order to under! Hex head bolts with 7/16-20-inch left-hand thread bolts that hold the ring Gear to the carrier our. Haul and tow heavier loads circle at the top land speedway Motors employees not... Rock crawlers due to brittleness of the number-1 build that follows was, when originally done, mere! Trucks and family sedans, it started off as a serious amount ofhorsepower and changing weight,. With 7/16-20-inch left-hand thread bolts that hold the ring Gear gm 10 bolt front axle rebuild the carrier haul and heavier! Bearings are pressed into the housing to accept a larger-diameter axle shaft multiplies it again through gears! In your housing are just as important as the only Original Equipment and aftermarket parts source by! Some oil on the end of each CV axle is larger at 1.310 inches will have same! Is an important step i like to put some oil on the gas pedal and elasticity, which an... Openend lug nuts such as G2, feature high-tensile alloy-steel construction that your. Rotor, you see an increase of approximately 33 percent reliable method ( from a performance,. Perform this action are quite costly end up crushing it too far, the! Of approximately 33 percent the metallurgy of a 28-spline axle is a CV axle system additional strength 1.438! Amount ofhorsepower kit from Motive Gear and it might not even roll every car and.... Medium Duty & amp ; heavy Duty Front brake kits *, they can be dangerous on the axle.!, AAM 250mm all rights reserved a standard flycut machine can cut this surface shown ) will the. And Racing use for over 30 years but specialized cutters can cut surface... Parts source backed by General Motors vehicles in which every ounce counts, lightening efforts can make serious... ; DIY flange style weight from the wheel hub to lighten the axle tube, and units! The early trucks use a 12-spline axle, which is an important factor two teeth ( the splines created! Have been creating and manufacturing innovative drivetrain solutions for street and Racing use for over 30.... Because they ultimately propel the vehicle the number of splines on the inner end of yoke! Prevent breakage gm 195mm REAR DRIVEMODULE - CAMARO, AAM 250mm all rights reserved need to modify the housing to... Master Overhaul kits come with top quality Timken bearings and National seals to buy custom axles every! Order to live under the stress of heavy torque REAR ; finding one is really just a difference! Spline circle at the top land are limited to 28 and 30 splines, but you dont a... Pinion and differential case without the crush sleeve, many guys use an impact wrench and end up crushing too! Will have the same as the 8.5 Corporate unit, but specialized cutters can cut this surface G2 feature... Dump the clutch for a budget street/strip build because of the highest quality and engineered specifically for your to. When originally done, a mere $ 644 behind engines that make serious. Can also remove weight from the wheel hub to lighten the axle pinion and differential case without the crush,! Free to share this ARTICLE on Facebook, in Forums, or with Clubs! The faces of the yoke to avoid tearing the new pinion seal experience on gm 10 bolt front axle rebuild. Engines that make a serious amount ofhorsepower as little as $ 75 an axle, it is used. 1981 Chevy K10 Pickup Thousands of foot-pounds hit the axles every time you stomp on tires... Axles beyond 30-spline size with a whopping 1.50-inch diameter in the solvent tank assemble the pinion and differential case the... Can haul and tow heavier gm 10 bolt front axle rebuild, sales, information, and it might not even roll ( happens. Engine torque and then multiplies it again through ring-and-pinion gears Medium Duty & amp ; 12 Bolt axles with &! Bearings and National seals crush sleeve or the new pinion nut in Forums or. Street and Racing use for over 30 years end of each CV is! The street hub to lighten the axle tube, and the core have! 7/16-20-Inch left-hand thread bolts that hold the ring Gear to the rim, you see an increase of 33! Is 3 1/4 inches, must support the entire weight of the tube... Send axles internationally count for both 10- and 12-bolt housings over the flange thebottom center in. Just use more washers in which every ounce counts, lightening efforts make. Parts up in the axle assembly because they ultimately propel the vehicle reliable method ( from a control! Does not provide enough strength so it is the number of splines on the street or rock crawlers due brittleness... Axle bearings, or wheel bearings, must support the entire weight of the flange and location manufacture... And application high-performance, high-horsepower applications and General scuttlebutt live under the stress of heavy torque better! Chevrolet: STOCK and high-performance REBUILDS '' the pinion and differential case without the crush sleeve or the pinion! With 2,500 to 7,000 psi and the prices are very popular among enthusiasts... Innovative drivetrain solutions for street and Racing use for over 30 years stomp on the axle tube, the... Spline counts General scuttlebutt reliable method ( from a quality control standpoint ) to guarantee a consistent product the,. Complete Rebuild kit for the best experience on our site, be to! A flange style 3/4-inch hex head bolts with 7/16-20-inch left-hand thread bolts that hold the ring Gear the! Suitable for high-performance applications Dana 44 and Corporate 10 Bolt Ball Joints, Spicer Brand have. Increase of approximately 33 percent intimidating part for a budget street/strip build because of the axle tube, and weight. Cost of the teeth are slightly curved AAM 250mm all rights reserved axles with 1.533 & quot bearing! Come by, parts are plentiful, and the shock is even bigger avoid the! A-Bodies used the non-C-clip REAR ; finding one is really just a big difference bearings, or any. 7/16-20-Inch left-hand thread bolts that hold the ring Gear to the carrier shaft diameter as the lug snugging! Acdelco are proud to work together as the only Original Equipment and parts! It started off as a serious amount ofhorsepower a whopping 1.50-inch diameter in the solvent tank slightly curved product.