Holley Performance 300-5 Engine Intake Manifold

Compatible with 396ci-502ci Big Block Chevy® equipped with Rectangular Port Heads. This product is not created or sold by Chevy®.; Carburetor Intake Manifold 396ci-502ci with Rectangular Port Heads;

Single Plane/Open Plenum Design Deep Plenum Design with Isolated Runners 4150 Square Bore Carburetor Mounting Flange Power band: 4500-8500 RPM Port Size: 2.30†height 1.60" width Height: Front 4.77", Rear 6.16"