I'm shooting for close to 9:1 compression on a 216 with flattop pistons, but I'm doing it with a stroker crank and a 60 overbore- - - -adding 7.5 cubic inches to each cylinder. That's increasing the cylinder volume by 123 CC's.

I don't think there's a way to avoid the oddball wear pattern from those rings. Most engines that run them are worn out or hand-grenaded with considerably less than 1,000 miles of running- - - -mostly at extremely high RPM. Doing race engine stuff on a street engine seldom ends well- - - - -at least with the several hundred high performance engines I've built over the past 50-something years. "Your Mileage May Vary"- - - -good luck!
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!