598 CI AFR 385CC CNC BBC Heads!!
#7
Registered
Too big. Drag racers are spinning 8000 rpm with those heads on 598's. Also, there are guys here that have made 1200hp supercharged with AFR 315 cnc heads. Stick to the 357 cnc and maybe have a set of 2.35 intake valves installed.
#8
Registered
you can use those heads,,,, there not to big you just have to put the right cam in....something around 254 264 650 655,,,you will make more HP with big heads and a small cam than if you had small heads and a big cam,,,,