1gGstKid
15+ Year Contributor
- 39
- 1
- Jul 24, 2006
-
St. Pete,
Florida
This is my first motor build up and i pretty much have list and the specifications of all the stuff i need to get. But one thing i can't decide on is the head stud size. I like the ARP but they have a 12mm and a 10.5mm shanked and undercut. Whats the purpose of having the two different sizes? And which one should i get? Thanks for the help.
-Justin
-Justin