Chevy SBC 400 B-4.125 M-400 DH-9.025 4-Bolt Billet Main Bare Iron Engine Block These Speedmaster supercharger manifolds are

These Speedmaster supercharger manifolds are aluminum constructed and suitable for competition or street use

it provides efficient high water flow and reliable performance

These pumps have a 97 gph flow rate

Kits include: Fully assembled aluminum cylinder heads

Pop-Off plates are designed to release the high pressure that builds up inside of the engine to prevent damaging or cracking your supercharger components

Chevy SBC 400 B-4.125 M-400 DH-9.025 4-Bolt Billet Main Bare Iron Engine Block These Speedmaster supercharger manifolds areIf your standard Bowtie block could handle 1500+ HP it would be Speedmaster's H1 engine block. Design from the ground up based upon your favourite bowtie block with the ability to handle naturally aspirated, supercharged, turbocharged and nitrous applications.