These are my updated numbers after another cruise in 76 degree weather.

D=800rpms 14.6 11"hg (this was 13.6 in 64 deg.)
For unknown reasons, the car ran leaner in the warmer 76 temps then it did earlier in 64 deg temps.

light accel from stop = 15-16 (was 13.8 in 64)
Same as above. Leaned out in warmer temps.

Cruise: (Transition lean issue?)
30mph= 1700rpms 17.0 (added)
40mph= 2200rpms 15.8-16.0
45mph= 2400rpms 15.6
50mph= 2500rpms 15.4-15.6
55mph= 2700rpms 15.4-16.0

CHECK THIS OUT
CRUISE: (main jet a tad rich?)
3000rpms in 2nd gear= 14.8-15.0
60mph= 3100rpms 13.6-13.8 (added)
3500rpms in 2nd gear= 13.6-13.8 (same as 60mph)

It appears that the mains are starting in between 2700rpms and 3000rpms. My main jets (66's) might be a tad rich. I swapped out my .071 IABS to the current .075's after the first startup with the O2 kit. Should I go back to the 071's to bring the mains in quicker and to richen the transition?

TRANSITION:
30mph= 1700rpms 17.0
Off idle with a red pump cam and a 037 squirter, I am still getting a lean spike of 16 on the guage from a stop to light throttle. I believe that the 071 IAB's will help this too but I am not sure if my .028 IFR's are too lean too looking at the 30mph thru 55mph readings.

Thank you very much.

Last edited by YO7_A66; 04/03/11 08:58 PM.

1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)