Cast Iron or Aluminum would work. Would like a head with hardened exhaust valve seats already installed.
Would be interested to know the diameters of the valves and the ratio of the rocker arms. Appears to be a version of the cragar 2 port, is this correct?
bob
Yes, this is my version of the Schofield/Cragar/Miller, with improved ports. Valves are 1.5 exhaust and 1.94 intake. Rocker ratio on the first build is 1.5:1. Aiming at 7.75:1 compression ratio.
Tod