Quote: I get 16 miles to the gallon in a 69 RR 472 Crate motor with a single 4 barrel and 850 Holley with a Keisler 5 Speed and a 4:10 rear doing 75MPH @2200 RPM.
Same here,....the last few 472's that I fabricated 6 bbl inductions for, running Keisler TKO's .64 OD with 3:54 to 4"10's would avg about 16-18 MPG crusing at approx 80 MPH on cross country events
