SONNY'S 5.3 BORE SPACE GM STYLE HEMISPHERICAL CYLINDER HEADS

THESE NEW 5.3 GM STYLE HEMISPHERICAL CYLINDER HEADS ARE OFFERED IN COMPLETE RACE READY VERSION, OR RACE READY CASTINGS ALSO. THEY FLOW OVER 700 CFM @ 1.200" ON THE INTAKE AND OVER 470 CFM @ 1.200" ON THE EXHAUST. THEY ARE THE ULTIMATE CYLINDER HEAD FOR PERFORMANCE, WE HAVE SEVERAL DIFFERENT PROGRAMS, FROM A PUMP GAS ENGINE APPLICATION, TO ALL OUT NATURALLY ASPIRATED, OR NITROUS, OR BLOWER APPLICATIONS, WE HAVE THE PROGRAM FOR YOUR NEEDS ! THESE CYLINDER HEADS ARE USED ALL THE WAY TO 940 C.I. APPLICATIONS!!!