Chevy BBC 454 360cc 115cc Aluminum Bare Cylinder Head they have hardened stem tips

they have hardened stem tips for durability and are swirl-polished

and throttle bodies

These Speedmaster expansion tanks are perfect for cars with low-mount radiators to provide a convenient filling location and to bleed off unwanted air

It is designed to hold the amount of oil that is needed to lubricate the engine when it is running

Chevy BBC 454 360cc 115cc Aluminum Bare Cylinder Head they have hardened stem tipsAs with all Speedmaster cylinder heads, our Big Block Chevrolet heads are "Gravity Die Cast". This casting process creates a much more uniform and robust cylinder head. With the increasingly large displacements becoming common, the need for more airflow is necessary. If you are looking to build a 400 500+hp engine, give our PCE281. 1489 heads a try. They offer a smaller cross section to increase the incoming air"s velocity, resulting in great