Yea, cleaning up the threads to install my ARP Headstuds (ARP234-4110).
I stripped one of the holes. its the rear top one so its not a water passage.
So i'm going to helicoil it and hop for the best.

whats the thread pattern for the OEM headbolt. I would figure the ARP would be the same so I can reuse it and not have to go a size up.

I measure the pitch to be 2.0mm but whats the width? M11 or M12? it is metric right?
help plzzzz.

 

http://www.timesert.com/html/gm.html

 

thanks man, so it is an M11X2.0
thats site's weird though, how do your order :?
did I miss the shopping cart

 

You purchase through their distributors.
http://www.timesert.com/html/distributor.html