Originally Posted By BradH
Originally Posted By Mattax
Brad - It sounds like the main jet threads are stripped. See top post. Not much depth for a helicoil or insert. Suppose it might be worth a try.

I wasn't trying to suggest that the OP use the old damaged blocks, but to get set of standard Holley blocks before he starts trying to tune it. Sorry for any misunderstanding.

Well I read more into it than you intended. No biggy. Everything posted is relevant and should be helpful. beer