I don’t think it’s fuel related I have an Innovate AFR gauge and its in the low 12’s and consistent. With the small cam its a torque combination and it drops off after 5900RPM. I’m at 67-6800. If I shift 1-2 and 2-3 at 5800 it ET’s the same as shifting at 6500 but shifting at the lower RPM makes the top end even worse because I’m not as far down the track.
If the plugs show to be rich in the low 12's, I'd lean that puppy out accordingly based on fuel and hang on. With some motors I've worked w/and know about, to a point leaner is meaner and I went faster in the 12.8-13.0 zone than at 12.2's. I've seen dyno pulls of some serious all out n/a motors where max power was in the mid 13's and leaner in some cases...........
Last edited by Thumperdart; 05/09/1810:04 PM.
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
