Cam lift ?

I agree with the Huges rockers. There beautiful parts. I myself have Comp roller rockers. Years old. Also worth every penny.
If valve clearance is an issue, you can cut valve reliefs into the pistons crown. Ask Egge how thick the pistons are and the approx. valve lift abilties. They should be able to answer the thickness quaetion easy. Also ask them how much you can go into the piston safely. Your machinest, if a racer, will also know this and basic saftey limits.

OH, OE hyd. rockers are terrible on there ratio being even close. They normally fall in around 1.4 or less. Use roller rockers for a true ratio and all the power freed up.

Nice post Toolman!!!