Re: Stock Vortec head 406 goes 11.60's
I've probably built hundreds of oval 406s, usually flattops with 64cc fuelie heads. 11:1 easy, needs race gas. Nothing at all wrong with those blocks. We ran them for decades as there was nothing else. Not much trouble with the mains, but lots of cracked decks. we got burnt out on the crack deal and ran them cracked. THis is Az where you're racing at 110*, there can be trouble with heating. learned to run a rigid 4 blade fan with a good shroud setup.
Tom Terrific or Terrible Tom, depending on the phase of the moon, passing cosmic rays or other factors not fully understood except by my wife.