Ummmmm. The 429 motor of that era was a much higher compression engine than the junk (government motors/EPA junk) we drive today ! A round rod (what 3/8's same as a head bolt) to loosen a head that has most likely been on the block for how long? And you may be correct, there may still be bolts attached. Being that with the higher compression & a that head weighs around 70 or so pounds. I kinda doubt a 3/8's anything will rock a stuck (rusted in place) 70 or so pound head !
KingButters. Good Luck with your project !
Ford Man in Michigan
Monday, January 17th, 2011 AT 8:18 PM