Originally posted by southerner
:

I have a few questions of my own:
- I recall on these forums that iron head small block chevys are prone to detonation at 1 full point of compression ratio as compared to the aluminium heads. So I am reasoning that if I can pull the water temp down to 170 deg f will this ward off detonation?
Your question is about detonation as opposed to "spark knock", is that correct?