Designed for 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 #2927 outperformed the competition out-of-the-box with just a port match and minor blending of critical surfaces. Super Victor Tall-Deck #2916 can be used on tall-deck (10.2") blocks without manifold spacers and accepts standard height distributors. Carburetor Recommendations: Use appropriate 4500 Series racing carburetor. Throttle Body Recommendations: Use #3879 4500 style or #3814 EFI elbow and #3869 90mm throttle body. Installation Notes: Recommended intake gasket: Edelbrock #7208, Fel-Pro #1275. Standard-deck manifold height: A-6.20", B-6.20", Tall-deck Manifold height: A-6.95", B-6.95".