Re: Henry's 37 Limousine

Posted by fredkanter On 2017/4/26 15:57:16

Decking a head to make use of today's gas is questionable. Original heads are about 6.5-7.0 CR, today's gas will withstand 10.0 or so. But you can't deck a 120 head to get 10.0, valves may hit and swirl pattern and flame propogation will be affected well before hitting those #'s causing pre-ignition/knocking. Are you building a hot rod or a driving classic??