Posted by mannyc on Friday, May 25, 2007 at 07:43:11 :
In Reply to: Re: Over boring- related follow up question posted by Terry in Bozrah on Friday, May 25, 2007 at 06:18:19 :
the al heads are more prone to leaking as they expand / contract at a different rate than the block metal and the two seperate metals work against each other. i agree they look good, but the best bet is to plane a stock head for added compression. improvements in breathing in & out & balancing seem to make the most difference.
mannyc