Manley Rotating Assembly, BBC 555 4.250 STROKE/4.560/-3cc

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. This particular kit is designed for a 555 cubic inch Big Block Chevy, featuring a 4.250-inch stroke crankshaft and a 4.560-inch bore size. If you're building a high-performance engine for a drag car, a serious street machine, or a dedicated track vehicle, a well-matched rotating assembly is the heart of your build, and this Manley kit offers a solid foundation.

The crankshaft and H-beam connecting rods are both forged from 4340 steel, a material chosen for its exceptional strength and durability under extreme stress. The connecting rods come equipped with 7/16-inch ARP 8740 cap screws, which are rated for up to 900 horsepower. For those looking to push the limits even further, there's an option to upgrade to ARP 2000 cap screws, allowing this assembly to reliably handle up to 1,500 horsepower. The pistons are forged from 2618 aluminum, part of Manley's Platinum Series, and include Premium Chrome Moly wrist pins, ensuring they can withstand the intense pressures and temperatures of a high-output engine.

This rotating assembly is a significant investment in your engine's performance and longevity. It's important to note that this part is not CARB approved and cannot be shipped to California. When assembling your engine, always refer to the manufacturer's detailed instructions for proper installation and torque specifications to ensure optimal performance and reliability.