Holley Performance 300-131 Engine Intake Manifold

Carbureted single plane intake manifold. Compatible with all GM LS Gen III or IV engines equipped with LS3/L92 style rectangular port cylinder heads; Carbureted single plane intake manifold. Fits all GM LS Gen III or IV engines equipped with LS3/L92 style rectangular port cylinder heads;

2500-7000 RPM power band 4150 Square bore flange (accepts up to 1.75" diameter throttle bores) Optimized runner layout and constant cross sectional area - broad torque curve, best vehicle performance from 2500-7000 RPM Minimum carb flange height - fit in vehicles with minimum hood modifications Cast aluminum construction - great manifold for centrifugal blower, turbocharged or NOS power adder applications Efficient casting design - lightweight, consistent wall thicknesses, improved casting quality Weight - 11.5 lbs. Height (front) - 5.417" to the lifter valley cover flange at the engine block front flange Port size - 2.50" height x 1.15" wide Includes Viton® O-ring intake to cylinder head gaskets - Viton® is a registered trademark of DuPont Performance Elastomers