The Speedmaster PCE287.1027 is a 12-point main bolt kit designed specifically for Chevrolet Big Block 454 engines with 4-bolt main caps. These fasteners provide a secure, reliable clamping solution for your main caps, making them a practical upgrade or replacement choice for engine builds and rebuilds on BBC 454 applications.
The 12-point head design allows for precise torque application with the appropriate socket, helping ensure consistent and proper installation. Whether you are refreshing a stock engine or assembling a performance build, this Speedmaster main bolt kit is engineered to fit your Chevy BBC 454 4-bolt main configuration straight out of the box.