what size are the rocker stud threads in the pro 1's ?

[sgblazer2]

i know that they accept stock style bolts, but what is the size/pitch of the threads?
i think that they are 7/16, but not sure. also, if im running roller rockers and a stud girdle, what would the useable thread length need to be? thanks

[Diabolical]

I think Dan may run those heads..
Not sure..
Lets wait and see who replies..
If no one..
I'll dig it up

[sgblazer2]

i found it, the whole in the head is 7/16-14. the arp # 134-7104 for stud girdles usage

[Diabolical]

Cool!!