I have a 73 Duster, 3400 lbs w/o me, 408 Edel heads, M1, 9.8:1 static (about 8.7 static) comp, 236/242 hyd roller, 4000 Dynamic 9.5" conv, 727 manual reverse into a 3.73 Dana.
With the old Holley 750 DP, my best ET was 12.26 and 8 mpg.
With a 850 ThermoQuad, my best ET is 12.09 and I have...