Holley 300-131Bk - Intake Manifold, Ls3, Street Sp, Carb - Black

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 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