Crank end play, destroyed converter, 408 nightmare

OK 4cc's is valve notch in piston not dome
thanks NM
I would strongly suggest you do not use a thick gasket to lower your compression
most likely it will ping worse and be more susceptible to bad gas and timing
work on your distributor curve
open up the chambers say 5 cc there are those on this forum who can tell you how to do it and even pick up some flow
back in the day we'd put the head on the bare block and flip it upside down and scribe around the bore (using some dykem or dye to see the scribe
do not take the chamber out to the gasket
you could also retard the cam to straight up
NM can tell you how much difference that would make (do we know what cam?)
all good questions 1974 scamp