BluePrint Engines Base Engine 383 CID SB Chevy Crate Engine - 445 HP H77703FM Single Stage Power Valves -

Single Stage Power Valves - High Flow - #HLY125-125 - Opening Vacuum 2

1977-1979 Ford F-100 6

Plasma Moly

Ultra Performance

We do not recommend using the 4033 with cargo coils or above stock height cars

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