How can you tell a 10-bolt posi?
The easiest way to identify the 8.2-inch rearend at a glance is by the shape of the housing and the spacing between the lower bolts on the cover. The 8.2-inch 10-bolt has a smooth, round, lower-case area (no cast-in protrusions), with an 11-inch cover that has a diagonal protrusion at the top.
What kind of rear differential does a Chevy 10 bolt have?
The rear cover’s shape and the number of bolts are identifying features for GM rear differentials. The round 10-bolt cover with a bulge for the ring gear identifies this axle assembly as an 8.5-inch 10-bolt.
When did the Chevy 10 and 12 bolt come out?
History and Identification of Chevy 10 and 12 Bolt Chevy Differentials Chevy 10- and 12-bolt axle assemblies have been standard equipment on GM passenger cars, muscle cars, and trucks for decades. The rugged, reliable, and efficient Chevy 12-bolt has established itself as the preeminent rear differential for GM muscle cars since its debut in 1965.
What kind of axle does a 12 bolt Chevy have?
This is the Moser Engineering 12-bolt axle assembly. As you can see, the Chevy 12-bolt differential is one stout axle, and it was the rear axle of choice for GM muscle cars and many GM competition cars.
How big is the pinion on a Chevy 10 bolt?
The pinion diameter is 1.438 inches, and has 25 splines. Like all Chevy 10-bolts, the axles are retained by C-clips on the inner end of the axle shaft inside the carrier. If you find a rearend that uses a large spring perch like this, it is from either an X or F-Body.
How big is the rear end of a Chevy 10 bolt?
Nothing could be further from the truth. The 10-bolt can handle just about anything you throw at it, as long as you use the right axle, either the 8.5- or 8.6-inch. That is the great caveat; there are four sizes of 10-bolt GM rear ends: 7.5/7.625-, 8.2-, 8.5-, and 8.6-inch.
How many horsepower does a 10 bolt Chevy have?
But there are several models in the 10-bolt line-up. The smaller 7.5- and 8.2-inch 10-bolt rear axles can’t transmit horsepower loads in excess of 400 hp. However, the 8.5- and 8.6-inch 10-bolts are extremely stout and effective rear differentials that can transmit up to 1,000 hp to the rear wheels.
What kind of differential does a 12 bolt Chevy have?
As you can see, the Chevy 12-bolt differential is one stout axle, and it was the rear axle of choice for GM muscle cars and many GM competition cars. Big-block Chevelles, Camaros, and other GM high-performance vehicles were fitted with the 12-bolt limited-slip axle to maximize torque transfer and traction. (Photo Courtesy Moser Engineering)
Where can I find the 10 bolt rearend code?
That way, you don’t unknowingly spend money on something you really do not want. While the 10-bolt rearend’s lineage can be identified by the code stamps, which are usually on the passenger’s side axle tube, there are literally hundreds of potential codes for the three different 10-bolt rearend housings.