It shouldn't be impossible to get 1.7 per cube on pump. It's pretty easy with a non exotic build to do it with more compression, challenged heads, and less than ideal headers. My old W5 motor @ 422 inches went 140@ 3220 pounds with a crude suspension, shelf tti headers, and likely a non optimal carb tune. That should be 1.7, or mighty close, and the heads were definately too small. Good heads for engine size, optimal headers and optimized A/ F's even with pump gas shouldn't be challenging I wouldn't think.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, low 10.30’s 1/4 1.41 best 60 foot 6.56 at 104.17
