Overview Carbureted single plane intake manifold. Fits all GM LS Gen III or IV engines equipped with LS1/LS2/LS6 style cathedral port cylinder heads Includes mounting bolts & washers as well. Also includes O-ring cylinder head mounting flange gaskets for an OEM style seal Features Includes Viton® intake to cylinder head O-ring gaskets - Viton® is a registered trademark of DuPont Performance Elastomers 4150 Square bore carb mounting 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 Efficient casting design - lightweight, consistent wall thicknesses, improved casting quality Port size - 2.659" height x .918" wide Cast aluminum construction - great manifold for centrifugal blower, turbocharged or NOS power adder applications Height (front) - 4.95" to the lifter valley cover flange at the engine block front flange Weight - 11.5 lbs. Minimum carb flange height - fits in vehicles with minimum hood modifications 2500-7000 RPM power band
