That’s one reason why it was hard to be competitive in limited displacement classes.
The decks are way too tall. A 9.00 deck is too tall for that 3.00 or under stroke.
The R/S ratio gets way too high, you have to spread the LSA so you can get enough p/v without .750 inch valve pockets and the piston is too top heavy no matter what.
It’s amazing the 340 did as well as it did in Pro Stock.
By that time they were using X blocks and milling .500ish off the decks and IIRC the stroke was around 3.25 inches depending on bore sizing.
A 6.36 rod and 2.96 stoke is a 2.15 r/s ratio.
That’s hard to do.