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

Manley Performance is well-known for making strong internal engine components, and this BBC rotating assembly is a prime example of their commitment to building parts that can handle serious power. If you're putting together a big block Chevrolet engine for a high-performance application, this assembly is designed to be the heart of your build. It features a 4.250-inch stroke and is sized for a 4.600-inch bore, creating a 565 cubic inch displacement.

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. These rods come standard with 7/16-inch ARP 8740 cap screws, a solid choice for builds up to 900 horsepower. For those pushing the limits even further, there's an option to upgrade to ARP 2000 cap screws, which allows this assembly to support up to 1,500 horsepower. The pistons are forged aluminum from Manley's Platinum Series, designed for performance and durability, and they include Premium Chrome Moly wrist pins.

This rotating assembly is a significant investment for a serious engine build. It’s important to note that this part is not CARB approved and cannot be shipped to California. When planning your build, ensure you have the necessary supporting components and machining services to properly install and tune this high-performance rotating assembly.