Chevy SBC 350 EFI 1957-95 Inj Ports HiRise Aluminum Intake Manifold [Black] but with several important modifications

but with several important modifications

These can be used on std or aftermarket plenum manifolds

Speedmaster EFI intake manifolds make it simple to convert competition engines to electronic fuel injection

aircraft-style cap and -10 AN pickup

They have injector bosses precisely positioned and machined for excellent fuel spray patterns and maximum power

Chevy SBC 350 EFI 1957-95 Inj Ports HiRise Aluminum Intake Manifold [Black] but with several important modificationsStep up to the high rpm power of an open plenum with Speedmaster HiRise intake manifolds. These cast aluminum manifolds accept square bore carburetors and are pressure tested to ensure maximum performance. They start to make awesome power around 3,000 rpm.