Holley LS Hi-Ram EFI Manifold-Black 300-124BK

The Holley GM LS7 Modular Hi-Ram Intake Manifold is introduced as a cost effective alternative to fabricated sheet-metal for high-performance applications where induction system height is not limited. Coupling this Hi-Ram intake with the high flowing LS7 style cylinder heads has outstanding potential for N/A and forced induction applications at a budget-minded cost. Aggressive, bold, race-bred styling will make bad intentions clear for drag race, muscle car, marine, off-road, sandrails, pulling trucks, track, street-rod applications and more! 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. Runner length and the tapered cross-section designed to perform well for a wide range of engine configurations EFI fuel rails are machined for -8AN O-ring Fittings with passages large enough to accommodate high fuel flows and dampen pressure pulsations in the fuel system and come standard with EFI Hi-Ram kits. Cast aluminum construction. 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 6.29, As-Cast Runner Cross-Sectional Area Tapered 4.67in² to 2.84 in²
• Throttle Body Flange Location, with 92/102mm EFI Plenum Top : Height 8.42 (from engine block lifter valley cover flange), Longitudinal Location 3.84 (forward from engine block front flange), Angle 25 deg. (down from vertical)
• Plenum Top Gasket Type 3/32 Round O-ring Cord
• Mounting Flange Gasket Type Standard LS3 Molded O-Ring
• Port Size 2.49 Height x 1.21 Wide
• Total Height with 92/102mm EFI Plenum Top 12.32 to the lifter valley cover flange on engine block.
• Base Plenum Top Mounting Flange Height 8.42 to the lifter valley cover flange on engine block.

*** The front and rear height measurements listed in the Specs section are referencing the overall height with the top plate installed. Please see the diagrams in the product images for other dimensions.