Safe distance between poly lock and rocker

[Steve.k]

Working on stud type rocker that is showing.050 ish gap at full lift. Is that enough or do you like more in case of a float situation?

[rustbucket79]

Sounds like lots to me. If you’re concerned you could try a shorter pushrod, but I would be worried if the Lifter/rocker/valvetrain might loft enough to contact the lock.

Is this an extreme RPM engine?

[Steve.k]

Thanks Rustbucket. 7300. Its the tightest I’ve had.

[turbo camino]

How much lifter-pushrod travel does it take to reduce the gap at rocker/polylock by .050"? If you are lofting it over the nose by that much you'll have much bigger problems to deal with.

[Geoff2]

If the cam is solid lifter, no problem. If hydraulic, that clearance could be taken up by lifter pump up. Result could be bent pushrod....or worse.

[Steve.k]

Its a solid roller setup. It had 1.73 rockers before moved to 1.80.