Any input on what shaft mounted rockers to use?

[RICK LAKE]

caprimaniac Cap I got to be honest with you, both look poor IMP for geometery of the rocker on the valve stem. Did you give the info to who ever you got the rockers from about heads,camshaft lift, valve springs, head work?
IMP neither picture is a good geo for the head. Rocker is really pushing on the edge of the valve stem this is going to cause per wear out of the guide and valve seal. You know that look, blue smoke on startups and going down the road when running over time. I would fine out what the max shims you can add to the rockers. You need to make sure the rocker does hit the edge of the retain for the spring through FULL motion on the rocker. You are going to need custom length pushrods. Mark the top of the valve stem and do a test to where the roller on the rocker is rolling. The closer to center the better it is. You may not get perfect center through the complete cycle of the rocker but a would want it close as possible. The picture #2 looks like the rocker is closer to center of the stem?? You also will need to grind the inside of the rocker arms for a little more clearance. Put black marker or paint of the valve stem and do a cycle. Try and have the rocker at about 40% centered on the stem, run the cycle for center and then go from there. Raise the rocker a little and lengthen the pushrod until you are centered. The stud mount for the rocker studs will stablizer the assembly. Check this a couple of times after road testing for torque on the shafts and lock nuts. Rick L.