I recently had to tap one of the heads on my GT where the exhaust bolts up. I had to go with a 3/8 X 16 tap to make good threads. The only bolt I had to match the tap was a stainless 3/8 X16.

Will the stainless bolt hold up or will it want to gull after being heated by the exhaust?

Thanks in advance for any input!

It will gaul if not taken care of I would of heli coiled it and put normal bolt back in so there all the same


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Thanks! I will look for a heli coil to fit.

Just seems like every other trip they backing out so I figured fresh threads might hold better than a heli coil. I haven't used heli coils in the past so don't have much confidence in them. It will be a small pain in the a$$ to have a different allen head but i already added one to my tool box i keep in the boat lol!! I would lock tight them but I have to take the exhaust off and weld it up every third trip!

Nothing wrong with a heli coil. Had one of my exhaust bolts that wouldn't stay tight and it finally stripped out. I put a heli in it and never had a problem outa it again.