Looking at a set of gt40p's with 3/8 hole for screw in studs. Also machined for guide plates. What kind of rockers do I have to use? Can I still run them on my motor? What does it all mean?!
I think the TFS stage 1 cam is a good cam for the GT-40P heads. I would use 1.6 RR's. If you don't have guideplates already, I would get comp cams ones. If it was machined right, you should be able to use any conventional rocker/guideplate/pushrod setup.