Perf. Tips Dart Drag Car

Are they ported heads? Cam set up?

I'm thinkin you're needing more carb. What size jets are in there now, and what list model carb is it?

For comparison sake, on our '72 Duster bracket car, 360(0.030"+) 11:1 solid cam w2 econo heads..... We've played around with alot of carbs but it seems to like the 850holley the most... 750 had a little more response, 1050 slowed it down... but quickest et was with a 850.... but then again we turn 7300rpm so that's a big difference as well. Our dart with the 422 really like a 1050, at 5900rpm. I don't think the 60' times are what's killing you for that ET