We are manufacturing Carbon Steel 8.5 Clutch Kits. These kits fit Oldsmobile Type "O" Differentials from 1967 - 1970. These kits also fit the GM Corporate 8.5 Posi from 1971 - 1987. This comprehensive kit is a direct replacement and upgrade for GM Part Number 23-1127. Unlike the GM Kits, our kits include 12 shims (2 of each in the following thickness: .010, .015, .020, .030, .035).
These kits are 100% U.S.A. made from the material to the tooling. The steel was sent to a lab for analysis and checked for Rockwell hardness. It is the same as the steel used to manufacture the factory discs.
We used the cross hatch surface pattern (which is similar to a Chevy 12 Bolt pattern) because this pattern offers superior lubrication that will enhance the life of the clutch.

For members of this forum, the price is $180.00 shipped.