Quote Originally Posted by 67hardtop View Post
Far out so many eggsperts. Just seal the new stud when u screw it in. Job done. Use stag or gm headstud sealer or even blue locktite 243.

No need to over think things. Its not the end of the bloody world.

Cheers Rod
yeah, no, thats what the one I repaired had had done to it initially, but the heat soak from the exhaust manifold and the creeping it put onto the manifold works it loose.

you can go overbore the stock stud size by 2mm safely, I've done a few that far for helicoiling.