Manley Rotating Assembly, BBC 572 4.250 STROKE/4.625/+43cc

Starting with a 4340 forged steel crankshaft is key for any serious BBC build, and this Manley rotating assembly uses one with a 4.250-inch stroke. This is the foundation for a robust engine that can handle significant power. The assembly includes 4340 forged steel H-beam connecting rods, which are known for their strength and reliability under stress. These rods come standard with 7/16-inch ARP 8740 cap screws, a solid choice for many performance applications. If you're pushing the limits, you can opt for ARP 2000 cap screws for even greater security and performance ceiling.

Complementing the crankshaft and rods are 2618 forged aluminum Platinum Series pistons. This material is chosen for its ability to withstand high temperatures and pressures while remaining relatively lightweight. They come equipped with premium chrome moly wrist pins, which are durable and designed to handle the reciprocating forces within the engine. This combination of components is rated for up to 900 horsepower when using the standard ARP 8740 cap screws, and an impressive 1,500 horsepower with the optional ARP 2000 cap screws. This makes it a versatile choice for a wide range of high-performance BBC applications, from street machines to dedicated drag racing engines.

It's important to note that this assembly is not CARB approved and cannot be shipped to California. Always consult the manufacturer's detailed specifications and installation guidelines to ensure proper assembly and performance for your specific engine build.