Thread: Valve to piston clearance with .600 lift?

That really depends on how you've timed your camshaft
I still recommend to people that they clay the top of the piston and see how far into it the valve goes with a lifter modified to be solid and not compress the plunger and use an adjustable length checking pushrod

.600 lift is really no issue, that being said every setup is different. I took about 2 weeks of planning and measuring to get my setup figured out.

1. you must have heads that flow at rated lift. In my case I flow benched them and they kept moving more CFM the higher I went up to .650

2. you must have heads that are clearanced for the rated Lift. You can cheat a little more lift by different retainers and such.

3. your springs have to be able to accept the lift and not get into coil bind issues.