CFE Racing Heads Big Block Chevy Conventional Spread Port (Assymetrical) 4.840 Bore Space 5.000 Bore Space Symmetrical 5.000 Bore Space 5.200 Bore Space 5.300 Bore Space Small Block Ford Wedge Canted CFE Fabricated Manifolds Small Block Chevy Wedge Late Model Fuel Injected Canted / Splayed Valve Big Block Chevy Conventional Spread Port (Assymetrical) 4.840 Bore Space 5.000 Bore Space Symmetrical Small Block Ford Wedge Canted Mopar Small Block Hemi |