Originally Posted By Thumperdart
Have you tried 7's w/that low compression or is the Hemi sensitive to where it needs the colder plug............ thumbs

With the last 5 year go round, the #8 put the color change in a good spot on the strap.That was 7.4:1 CR and 12 lbs of boost,new pistons are 9:1 so it's back to the tuning thing.............
Pump gas might be no more than 3 lbs.

Last edited by hemi-itis; 06/27/17 01:18 AM.
HEMI-ITIS has no cure.
My condition is fully BLOWN!!