Manley Rotating Assembly, BBC 632 4.750 STROKE/4.600/-3cc

If you're building a serious big-block Chevrolet engine, a strong rotating assembly is the heart of the operation. This Manley Performance rotating assembly is designed for BBC applications, specifically for a 632 cubic inch displacement with a 4.750-inch stroke and a 4.600-inch bore. It's a well-built foundation for a powerful engine build, whether you're aiming for a street-strip monster or a dedicated race machine.

At the core of this assembly is a 4340 forged steel crankshaft, chosen for its strength and durability under high stress. Paired with it are 4340 forged steel H-beam connecting rods, which come equipped with 7/16-inch ARP 8740 cap screws. For even more demanding builds, optional ARP 2000 cap screws are available, allowing this assembly to handle up to 1,500 horsepower. The pistons are 2618 forged aluminum from Manley's Platinum Series, featuring a -3cc dish to help achieve your desired compression ratio, and they include premium chrome moly wrist pins for added reliability.

This assembly is rated for up to 900 horsepower with the standard ARP 8740 bolts, but stepping up to the ARP 2000 bolts opens the door to supporting up to 1,500 horsepower. Keep in mind that this part is not CARB approved and cannot be shipped to California. It's a robust package for anyone serious about maximizing the performance of their big-block Chevy.