Manley Rotating Assembly, BBC 565 4.250 STROKE/4.600/+43cc

This Manley rotating assembly for BBC engines includes a 4.250-inch stroke 4340 forged steel crankshaft, 4340 forged steel H-beam connecting rods with 7/16" ARP 8740 cap screws, and 2618 forged aluminum Platinum Series pistons with Premium Chrome Moly wrist pins. This package is designed for serious builds, offering robust components that can handle significant power.

The 4340 forged steel construction of both the crankshaft and connecting rods means these parts are well-built to withstand the high stresses of a performance engine. The H-beam design of the connecting rods offers a strong balance of strength and weight, further enhanced by the included ARP fasteners. These rods are rated for up to 900 horsepower with the standard ARP 8740 cap screws, and can be upgraded to handle up to 1,500 horsepower with optional ARP 2000 cap screws, giving you flexibility as your build progresses. The Platinum Series pistons are forged from 2618 aluminum, a material known for its strength and thermal expansion properties, making them suitable for high-performance applications. They come complete with Premium Chrome Moly wrist pins, ensuring durability in the critical piston-to-rod connection.

This assembly is intended for high-horsepower applications and is not CARB approved, meaning it cannot be shipped to California. Please consult your local emissions regulations before purchasing.