Quote Originally Posted by stroked95gt
PART # RATIO STUD APPLICATION
S4603 1.7:1 7/16 Brodix T1F

http://www.harlandsharp.com/originalseries3.htm

Attachment 16113
If you want a good rocker arm check out the Scorpion roller rockers.They have a lifetime warranty on them.You can buy them for $200 or maybe a little less if you look.
We run these in our IMCA engines lap after lap at well over 7,000.
If you are going to run any roller cam get the 7/16'ths stud.