I am about to buy the CC305 and was wondering if there was anything that I had to do to my heads to make the Roller Rockers work? I heard that you have to machine your heads. Are they direct bolt on or do I need to do anything else. My heads have been ported and polished and have heavy duty valve springs on them already.

 

As long as you get the right size for the studs(3/8 or 7/16") they will bolt right up.The only problem you might have is with the valve covers.You may have to remove the bracing inside.Not a big deal.

 

Go XE Comp Cams...

 

If you are getting aluminum rockers they need to be the narrow body style for center bolt valve covers.

Rich