Hi-Ram Lower Manifold GM LS1/LS2/LS6 Cathedral Port Carbureted Base Only (plenum-Top-Mounting Fabrication Flange Available) HolleyCast aluminum construction. The base is designed to be modular in configuration to accept a wide range of carbureted and EFI tops and to be attractive to builders and fabricators as the foundation for custom induction systems. Intended for use on N A or forced induction engines in the 6. 0 to 7. 0+ liter range, max power at 7000 8000+RPM. Runner length and the tapered cross section designed to perform well for a wide range of engine configurations EFI
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Hi-Ram Lower Manifold GM LS1/LS2/LS6 Cathedral Port Carbureted Base Only (plenum-Top-Mounting Fabrication Flange Available) Holley