I have a 73 Dart Sport with a /6. On the HWY running at approx 60 mph and taching at just over 3 grand I get 220 miles per tank!!!! Approx 15 MPG!!! If I drop in back to 25/26 on the tach hwy I gain about 60-70 Miles per tank. This is the reason the 360 is on the engine stand, soon to go in!!!
Bryan