v2.90RR/23º
2.90in² MIN
59cc  chamber
250cc runner
2.125-2.150 valve
1.580-1.600 exhaust
50º seats

SBC Raised Runner.  Developed for NHRA B/ND, this head fits all iron class rules. This head has a 21º valve angle and comes 59cc with flat bottom valves.  Can be tailored for ANY application, please call.

RHS is no longer making cores.  Program available with your cores