I ran the Summit Roller Rocker arms before and they were fine. I put 120 hrs on them and the next owner did the same with no issues.

I have two sets of used crane energizer roller rockers I'd sell for $100. They ran fine but made a little more valve train noise then I wanted, so I bought comp cams pro magnum rockers. The energizers are just laying around now taking up space.

BT

You're asking for trouble using stock rocker arms with anything other than stock lift cam. I've seen pushrods eat a hole through a stock rocker.

The stock rockers will hit the rocker studs at anything more than .550 lift. There are long slot rockers that are stamped steel for higher lifts. However higher lifts usually mean higher spring pressures and /or roller cams. I wouldn't feel comfortable using stamped steel rocker arms for that.

PatriYacht is right---I remember GM making what was called the "long slot" rocker arms which was still a stamped steel rocker arm only it would accomdate a higher lift cam, but I cannot remember how much lift they're good for. If you use them, then use the grooved rocker arm balls too---you're going to need all the help you can get if you're insistant about not using roller rocker arms.