Hi-Ram Base, Big Block Chevy - Holley - 300-961

Holley Hi-Ram EFI intake manifolds are now available for 1965 and later 396-502+ MKIV-MKVI Big Block Chevy engines with standard intake flange rectangle-port cylinder heads. Traditional Big Block Chevy engines can now also be fitted with the Holley Brand Hi-Ram type EFI intake manifolds that have so well served GM LS and LT, Gen 3 Hemi, SBF Ford, and Ford Coyote engine platforms. The iconic Chevy SBC and BBC platforms are primed for 21st century induction systems, Holley EFI engine management, and Holley fuel systems.
2.40” tall x 1.60” wide port flange openings, uses Mr. Gasket intake manifold gasket #5817 - Designed for 1965 & later 396-502+ MKIV-MKVI standard 9.80” deck height Big Block Chevy engines with standard intake flange rectangle-port cylinder heads. - Requires the use of early type GM or small cap MSD or Holley Distributors. Not compatible with HEI distributors - Cast 356-T6 Aluminum Construction, Natural, Satin As-Cast Aluminum Finish - Power Band: 1500-8000 RPM - The coolant outlet is a standard Chevy thermostat housing flange. and (2) 1/2 NPT and (1) 3/8 NPT coolant ports are provided. - MAP sensor port is for a GM Gen IV LS MAP sensor, manifold also has provisions for (1) 1/8 NPT, (1) 1/4 NPT, (1) 3/8 NPT fittings to the plenum - Black anodized EFI fuel rails are machined for -10AN O-ring fittings and come included with these EFI Hi-Ram kits.
part type: Engine Intake Manifold | Brand: Holley | Material: Aluminum

Detailed Fitment Results
Year Engine Size 1900 7.4 1900 6.6 1900 7 1900 6 1900 6.5