Valve to piston clearance?

I can tell you one thing;
If you put a brick on the gas pedal of a 74 Duster with a 318; it will rev up, float the valves, and send all 8 exhaust valves into the crowns. It will sit there like that for 20 minutes or so they said, until one brave soul plucked the brick off. The revs came down, it stalled, and would not restart.
I got the car back for the promised $50. I pulled the heads and put a good set on, that I had kicking around, then I took it for a spin. That was 1978.
With the heads off, I could clearly see the fresh divots in the pistons.
I still have those heads, but I threw those bent valves away.
So, they say those Mopar lifters have a range of .135 IIRC.
I guess it was too much range or not enough deck clearance,lol

FWI
many years later(2000) I took that engine apart for inspection, with an eye towards making it my winter engine. There was nothing else wrong with it, so into my Barracuda it went in winter of 2001. Five winters later, I installed into my sons D-100. About 8 years later it came back to me....... again. Anybody need a high-mileage, lo-compression teener, that just won't die?
Be advised, I installed 360 springs on those heads and shimmed them up some. She has been to 5500 many many many times. Yes with the factory cam it was born with, but with the big TQ, TTIs, and 3 inch full-length duals. She liked the 2800TC too. She's my fourth favorite all-time engine, meh;maybe third