Originally Posted by
95LSv
If I were you I would just change the head. My friend and I have built 2 good motors together and hes built about 10 alone. So I may have more knowledge and access to better tools. I can understand this not being the best option for you. Its easiest IMO, and I wouldn't trust a rethreaded spark plug
h:
My rethreaded spark plug hole has been functioning beautifully for 2 years now. A legitimate machine shop can get that spark plug out and make it as if it had never happened.
$50 for the machine shop to get the bolt out is much more cost effective than a different head. LS heads are pretty cheap, though, so if you can find one in good condition for less than a machine shop would charge to extract the spark plug, that would probably be less of a hassle.