Jim, I will test to see what the O2 gauge shows on my next drive past 2700rpms. Current setup: Quick Fuel SS-750 Annular DP, 66/72 jets, 8.5 hi flow pv (per QF), .028 IFR's, .075 IAB's, 4 metering screws out one full turn. I do believe the buttrtflies are 1 11/16". I think that I am far enough into the throttle to be on the primaries. Thanks Jim.
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
