Max lift on stock guides and seals?

Abodybomber said
Dave,have personally seen a .480/.494 hyd,clear a stock valveguide.Using 340 replacement springs.

Good to know. I'm seeing a little room placing a 1/2" hex bar between the guide with the new seal on it and retainer.

And yeah, I figure I'm gonna lose some on original rockers.

I'll measure this up at work with a good internal caliper on Monday and post results, as I'm sure a lot of people want to know.

I've seen 0.530" on small comp cams seals. I've read .500" and I'm seeing at least .500" with my crappy tools on hand.