318 stroker using Scat crank

The old books used to say .520 lift was max. Advertised of course so there's a little fudge factor built in for the pushrod angle mess. But that was long before the faster rates of lift. I think I'd limit it to what you see for the XE268 type stuff. The Lunati Voo Doo 268s might be too fast for it. Basically - stay conservative and you should be fine. Push the l;imits and you'll want to mock things up and measure to be sure.