Holley Hi-Ram Lower Manifold - GM LT1 - 300-237 chrome 1987-1990 GMC R2500 Suburban

1987-1990 GMC R2500 Suburban

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Holley Hi-Ram Lower Manifold - GM LT1 - 300-237 chrome 1987-1990 GMC R2500 SuburbanOverview: The new Holley EFI Hi Ram intake provides the ultimate performance with the new GM direct injected Gen V 6. 2L LT1 engine. The modular design of this manifold allows easy disassembly for custom porting, multiple tops, or custom induction systems. Each runner has a large radius where it meets the plenum, and optimized taper & cross sectional area to perform in a wide variety of engine configurations. The optional injector bosses on the intake