SMALL BLOCK HEADS

hey wall, I for one would just like to thank you for your Insight and knowledge on this subject and agree with your conclusions. I am no engine builder but I raced many small blocks back in the day with an X headed 340 swinger with a good valve job and Springs and when it was all stock never lost lost a race to a stock small block Chevy never. it would even shut down fresh rebuilt cammed and aftermarket intake with headers Chevy small blocks. The 396 cars we're a good race and could that go either way. But come to think about it most all of those 396 cars we're supporting headers at the least.