Holley 300-131 Single Plane Carbureted Intake - GM LS3/L92

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Carbureted single plane intake manifold. Fits all GM LS Gen III or IV engines equipped with LS3/L92 style rectangular port cylinder heads Features: 2500-7000 RPM power band 4150 Sq uare 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 Show more