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These Speedmaster supercharger manifolds are aluminum constructed and suitable for competition or street use
Speedmaster Fabricated Aluminum Valve Covers are made form high grade aluminum and include billet rails which provides an excellent seal and strength to any performance engine
Ideal for vehicles with a long water pump and Type 2 power steering pump
straight ball-milled
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.
