Look at the Thunder racing website.They list both with the part numbers you need.

Rob.

 

Did you try looking at CompCams website?

http://www.compcams.com/Technical/Pr.../ProMagnum.asp

1302's are NSA for 3/8" (stock diameter) studs

 

If you are referring to the guideplates, I assure you they are the correct ones. They also fit some V6 applications.

 

It has nothing to do w/ brand name, it has everything to do w/ the rockers being nonself-aligning or self-aligning! The Pro Mag rockers come in self-aligning (SA) AND nonself-aligning (NSA), AND 3/8" AND 7/16"stud length. IF you select NSA, you need to get guideplates (GM preferred-and the pn I gave in a previous post, along w/ the one Shoebox posted, is correct). If you select SA rockers, you do NOT need (or want) guideplates. Contact the folks at Combination Motorsports; they will be most helpful in assisting you to build the power car you're seeking w/ the best results for your $$$.
Your question is a good one. I would suggest a search as there is alot of really good info on this topic which will answer this question as well as questions yet to come. I hope this helps!

 

Dont forget, running guideplates means you need hardened pushrods too

 

I'm getting the CC High Energy pushrods PN#cca-7809-16...those should work fine i would think....

 

Not trying to hijack the thread... but why is there power loss with self-aligning rockers?