I know this is an older thread but I couldn't resist. We have a 318ci in a 69 Dart (3300 lbs) running a mild tune doing 10.50's @129. 12 psi of boost, 8.1 comp and 575 Demon. No need for big cubes or big tires! Later
Ryan
YouTube - 1969 Turbo Dodge Dart 318ci 10.61 @129.34