Edelbrock Super Victor BBC #29275 EFI intake manifold is compatible with Chevy big-blocks with rectangular port cylinder heads, this single-plane manifold is ideal for 500+ cubic-inches or any big-block drag race engine with high air flow requirements. In dyno testing, Super Victor #29275 EFI outperformed the competition out-of-the-box with just a port match and minor blending of critical surfaces.