Koyo master bearing kit for the GM 8.2 inch 10-bolt rear: carrier and pinion bearings, pinion seal, crush sleeve, shims, ring gear bolts and gasket.
The Chevy 8.2 10-bolt is the rear axle under a huge share of 1964-1972 Chevelles, El Caminos, first-generation Camaros, Chevy IIs and Novas, full-size Impalas and Caprices. Many of them are now on their second or third set of gears, and a restored car that howls on the highway usually has tired pinion bearings or a gear set that was never set up right. The Motive Gear R10CRMK is a master installation kit for that axle, with Koyo bearings and the shims and hardware to set up a new ring and pinion correctly.
The 8.2 is a C-clip, integral-carrier rear with a 25-spline pinion and a 10-bolt cover. The pinion runs on a large inner bearing and a smaller outer bearing, with a crush sleeve between them; Motive Gear notes this kit uses the short crush sleeve. A shim under the inner bearing sets pinion depth. The carrier rides on two side bearings with a 1.7812 inch bore, and shims between the bearing and the housing set carrier preload and backlash. On a muscle car that sees hard launches, those bearings are what keep the gear mesh from deflecting. Once they wear, the pinion moves under load and the ring gear contact slides toward the edges of the teeth, which is where the whine and eventually the chipped teeth come from.
Axle bearings and axle seals are not included. The kit is set up for an aftermarket ring and pinion; if you are reinstalling an original GM gear set, the listing notes that Motive Gear part 3106 is also needed.
First make sure it really is an 8.2. The Chevy 8.2 was replaced by the 8.5 10-bolt in passenger cars in the early 1970s, and Buick, Oldsmobile and Pontiac used their own 8.2 with a different design. Check the axle code on the right tube and the cover shape. Then pull the driveshaft and check the pinion yoke for play, drain the oil, and inspect the ring gear teeth. If the teeth are pitted, plan on a new gear set such as the GM 8.2 3.55 ring and pinion.
Motive Gear catalogs the R10CRMK as a standard-rotation rear master kit for the GM 8.2 inch differential. The listed applications are the 1967-1970 Camaro, 1964-1972 Chevelle, 1964-1971 El Camino, 1964-1968 Chevy II, 1969-1972 Nova, 1965-1972 Impala, 1966-1971 Caprice, 1970-1972 Monte Carlo and 1965-1972 Pontiac Catalina. Swapped or replacement axles are common on cars this old, so do not trust the car's year alone. Read the axle code, or send us the year and VIN and we will help you sort it out. For a BOP 8.2, use the Buick, Olds and Pontiac 8.2 master overhaul kit instead.
| Fits | GM 8.2 inch 10-bolt rear differential |
| Part number | Motive Gear R10CRMK |
| Gear set | For aftermarket ring and pinion; OEM gear sets also require Motive Gear 3106 |
| Includes | Koyo tapered carrier bearings, Koyo front and rear pinion bearings, pinion seal, crush sleeve, pinion nut, carrier and pinion shims, ring gear bolts, cover gasket, marking compound and brush, thread locker |
| Material | Alloy steel bearings |
| Shipping weight | 5.4 lb |
| Condition | New |
The kit is cataloged for 1964-1972 Chevelle, 1964-1971 El Camino, 1967-1970 Camaro, 1964-1968 Chevy II, 1969-1972 Nova, 1965-1972 Impala, 1966-1971 Caprice, 1970-1972 Monte Carlo and 1965-1972 Catalina. Confirm the axle code, since many of these cars have had axles swapped.
No. The BOP 8.2 is a different axle design. Use a BOP-specific overhaul kit for those rears.
The kit is set up for an aftermarket ring and pinion. The listing notes that original GM gear sets also require Motive Gear part 3106.
No. Axle bearings and axle seals are sold separately. Since the C-clips and shafts come out for this job, it is a good time to replace them.
Revolution Gear's setup chart lists 12-15 in-lb for the GM 8.2 with new bearings. Always follow the spec that comes with your gear set if it differs.
