Head Bolt Thread Chaser

[RBruton]

I have stock heads. I have purchased ARP studs and nuts and want to run the holes with a thread chaser but have not been able to specifically pin down the size of the studs. The box is not specific, ordered from Summit and their info is not specific, tried calling and couldn't hang on that long. Can anybody provide what size thread chaser I need to get.
Thanks
Robert

 

[turbodave231]

7/16-14 Unc

 

[Turbo T/A 1543]

When I changed the heads on mine I took a cutoff wheel and made a clean slice lengthwise down opposite sides of one of the original head bolts, and then cleaned up the bolt with a wirebrush. Works great and the price is right!

 

[RBruton]

Hey, thanks I appreciate the information. I did manage to find out the ARP thread chaser is 7/16-14 thread pitch. I took that to Napa and picked up a tool that is supposed to be a thread chaser but it still says plug tap on it for about $4 or so. I'll have to go real slow and make sure its the right tool. Unfortunately I don't own a cutoff tool so hopefully the piece I picked up will work. Thanks Again.