I am selling a set of custom CNC ported Small Block Ford heads based on RHS 35012 castings. These are a standard 20 degree head with the port design by Revolutionary Performance and Machine.

The heads have a 2.5 sq in min. Cross sectional area and are designed for as small as a 4.030 bore. These have been flowed by RPM plus also by two other independent, nationally known shops and all the flow numbers are extremely close and accurate.

Lift .100 .200 .300 .400 .500 .600 .700 .800 .900

INtake 64 137 199 249 281 304 318 322 328

Exhaust 52 115 156 184 200 210 216 220 223 (Ex flowed with pipe)

This is a very versatile head that is designed for ideally a 393-427 cube engine but as I said, it can be run on a small bore and perform great.

Buy it now also gets you a free set of Manley valves for the heads!