As I `ve said before , big h.p. is going to create more heat than a lesser one. What works on a factory or warmed over 340, or 440 probly won`t work on a hot big h.p. stroker ! The more h.p. , the more heat is produced. There aint many A bodies w/ smaller engine bays than the early ones, or a 67-8-9 barracuda.