ARP head bolts, which ones?

[qwic87gn]

I see that ARP sells 2 diff. psi bolts for the TR. Which one should I use? They will be used with irons.

 

[Six_Silver]

The 12pt head bolts are I think 190,000 and the 6pt head bolts are 170,000 (if I remember correctly). Get the 12pts if you can.

 

[qwic87gn]

Is there any chance that the 12pt 190,000psi bolt could warp the block or head and actully reduce clamping force?

 

[Six_Silver]

Not that I have ever heard. A lot of guys are using the 12pts. I use them on my stock heads with no problems.