I figured its probably about .800 valve lift. like you're saying...If I redo this engine this winter, I was wondering if i should open up the bores and get a nice big bore, tight lash cam that is Drag Week friendly and yet makes the HP...Not sure if that is possible....But one of the reasons you don't see these engines on Drag Week is the valve train....Might be ok at car cruises, and some weekend flogging, but not 1400 miles and then more flogging...Never gonna happen.

I should just put a Hellcrate in the damn car and start enjoying it...one of these years.

'70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft)
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car)
https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)

'66 Barracuda AWB Stretched nose Blown 440 Car in build stage

'71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph
https://www.youtube.com/watch?v=Znuo3jMUXTk