This manifold for big-block Chevy is a variation of our Victor 454-R manifold #2907 with a 3/4" radius in the ports, producing a port exit compatible with current large oval port heads such as the Edelbrock Victor 24° CNC head #61409. It delivers the performance of the original #2907, giving excellent on-track performance on 502 c.i.d. and smaller engines. It 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.
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