![Chevy SBC 350 EFI 1957-95 Inj Ports HiRise Aluminum Intake Manifold [Black] If your standard Bowtie block](https://cdn.shopify.com/s/files/1/0762/0316/3867/files/1-147-084.jpg?v=1784018899)
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If your standard Bowtie block could handle 1500+ HP it would be Speedmaster's H1 engine block
but with several important modifications
These manifolds require a universal 4-barrel throttle body
These can be used on std or aftermarket plenum manifolds
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] If your standard Bowtie blockStep 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.
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