I've been told from up to 14.0 to 1 and down to 8.5 to 1 mechanical compression ratio confused
I know the NHRA blown alcohol racers use 11.5 to 1 and up to 13.5 to 1 compression ratio on methanol with a bunch of boost, 45+ lbs. boost and over 11,000 RPM shock
I've also been told that they are now making north of 4500 HP, I'm shooting for between 2200 and 2700 HP on E85 at or below 8500 RPM: luck:

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)