Edelbrock part #2891 Super Victor 440 intake manifold is designed for 413-440-500+ RB with standard or Max Wedge heads and 4500 Series carburetors. For competition and high-rpm Chrysler V8's, the Super Victor 440 has an all-new runner design that delivers maximum power from 3500 to 8000 rpm in drag race applications. This intake manifold features standard 440 port exit sizes 1.13" x 2.17" to match with Edelbrock Victor 440 aluminum cylinder heads #77919 or #77929. Edelbrock part #7798 valley cover is required when used with Edelbrock Victor Series cylinder heads