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

This Manley rotating assembly gives you the core components for a serious BBC 632 cubic inch engine build. Inside this kit, you'll find a 4340 forged steel crankshaft with a 4.750-inch stroke, designed to handle significant power. It also includes 4340 forged steel H-beam connecting rods, which come standard with 7/16-inch ARP 8740 cap screws, or you can opt for ARP 2000 screws for even more strength. Topping off the assembly are 2618 forged aluminum Platinum Series pistons, complete with premium chrome moly wrist pins, and they feature a -3cc dish to help achieve your target compression ratio.

This is a well-built package for those looking to push the limits. The 4340 forged steel construction in both the crankshaft and connecting rods means you're starting with a solid foundation that can handle the stresses of high-RPM operation and increased cylinder pressures. The H-beam rod design is a popular choice for its balance of strength and weight. The included pistons are forged from 2618 aluminum, a material known for its durability and ability to withstand high temperatures and pressures common in performance engines. With the standard ARP 8740 bolts, this assembly is rated for up to 900 horsepower, and upgrading to the optional ARP 2000 cap screws raises that capability to an impressive 1,500 horsepower.

When building a high-performance engine of this caliber, it's crucial to have reliable internal components. This Manley rotating assembly provides that, giving you the confidence to tune for maximum output. Keep in mind that this assembly is not CARB approved and cannot be shipped to California. You'll want to ensure you have all the necessary supporting components, such as bearings, rings, and a proper balancing procedure, to complete your engine build.