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I have a set of Comp Pro Mag Roller Rockers 1.6 S/A, they are 3/8 stud, can I still use them? Bunch of people have told me to use the 7/16 but I already have 3/8s, I plan on running some .550 lift double coil LT4 Valve springs, I may run those springs if I decide to go with a CC305 cam, but latley i have been thinking about going with a small solid roller.
I ran Crane Gold 1.6rr 3/8" stud in my 396 with the CC305 cam without issues. Engine had about 7k miles on it with them before I converted to 7/16" studs for a solid roller. I would suggest sticking with what you have and stay with a hydraulic roller cam.