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

The 4340 forged steel crankshaft is the heart of this Manley rotating assembly, built to handle the demands of a BBC 565ci engine with a 4.250-inch stroke. This isn't just a collection of parts; it's a precisely matched set designed for high-performance builds where reliability under extreme stress is paramount. The 4340 forged steel H-beam connecting rods are a strong choice, coming standard with 7/16-inch ARP 8740 cap screws, with an option to upgrade to ARP 2000 fasteners for even greater strength, allowing this assembly to handle up to 1,500 horsepower.

Complementing the robust bottom end are the 2618 forged aluminum Platinum Series pistons. These pistons feature a +43cc dome volume, which is crucial for achieving the desired compression ratio with specific cylinder heads. They also come equipped with premium chrome moly wrist pins, known for their durability and ability to withstand high loads. This combination of high-quality forged components ensures that your engine can produce significant power, with the ARP 8740 bolts rated for 900 horsepower and the optional ARP 2000 bolts pushing that capability to a remarkable 1,500 horsepower. This assembly is a solid foundation for a powerful street or race engine.

When considering this rotating assembly, remember it's not CARB approved and cannot be shipped to California due to emissions regulations. It's essential to ensure this assembly meets your specific engine build goals and local regulations before purchase.