Edelbrock part #29270 Super Victor BBC Large Oval Port intake manifold is a variation of our Super Victor BBC intake manifold #2927, but features 3/4" radius in the ports. Producing a port exit compatible with current large oval port heads such as the Edelbrock Victor 24 degree CNC head #61409. It shares the performance attributes of the original #2927, but can be ported to fit a wider variety of cylinder head shapes and locations, making it especially suitable for use with custom CNC ported heads on engines with high air flow requirements.