Holley Performance 300-123 Engine Intake Manifold

LS1/LS2/LS6 Cathedral Port EFI for 1 x 105MM Throttle Body; The Holley GM LS1/LS2/LS6 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 LS1/LS2/LS6 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.;

Base Plenum Top Mounting Flange Height â€" 8.42†to the lifter valley cover flange on engine block. Total Height with 92/105mm EFI Plenum Top â€" 12.32†to the lifter valley cover flange on engine block. Runner Length â€" 6.58â€, As-Cast Runner Cross-Sectional Area â€" Tapered 4.25 in² to 2.53 in² Throttle Body Flange Location, with 102mm EFI Plenum Top : Height â€" 8.42†(from engine block lifter valley cover flange), Longitudinal Location â€" 3.84†(forward from engine block front flange), Angle â€" 25 deg. (down from vertical) Plenum Top Gasket Type â€" 3/32†Round O-ring Cord Mounting Flange Gasket Type â€" Standard LS3 Molded O-Ring Port Size â€" 2.49†Height x 1.21†Wide