head casting number 4772576?

Jack, the standard valve job for my heads is 5 angle now. Exactly what BJRs doing, plus a shallow cut in the chamber to unshroud the valves. 3 angle is for stock type rebuilds now...lol. Funny thing is, all angles are cut at the same time now, with one cutter. No more dressing stones, or switching stones for each angle. The difference is the $3000 grinding setup, or the $50,000.00 Serdi machine.