|
I have a 1955 Chevy pickup hot rod. It runs a 327 Chevy engine (modern Dart Pro 1 Aluminum heads) with 10:1 compression on 64cc heads and flat top Keith Black hypereutectic pistons. No problems with unleaded premium 93 octane as long as I don't lug it. But it is marginal. Race gas works lots better. It had 11.5:1 forged pistons when I goit it and would rattle with the old stock cast 64cc heads. This engine (340 dyno HP) really needed premium.
|