Dual Plane Front Intake Manifold Fits for Small Block Chevy SBC 262-400 1955-86

Dual-plane, low-rise design with a 180-degree firing order greatly improves torque over a wide rpm range for excellent throttle response. Dyno tests showed gains of 5 hp and 9 ft-lbs. From 3000 to 4500 rpm, the power increases averaged 5+ ft-lbs.