I guess i can be real happy with 19-22 mpg than . Yep i run the fentons and pertronix unit also. The thing is real happy at 70-85 mph with the motor barely turning. Before the rear gear swap and 5 speed i dont think i every saw 12 mpg but the motor was all stock and real high mileage. This motor was done on a budget no high buck parts but the fentons.Total cost 1120. bucks . So i like them old inliners. Drive it every day and put over 15000 a year on it. I think your intake and carbs cost more than my whole motor.LOL Someday i will build a big one but this one is too darn dependable now to change.LOL Plus i could not fit my A/C with multi carbs the way i have it now.
