Fuel economy (odd ball)

Dan
A lot depends on the transmission. Some of the trucks got the NP 4 speeds with a granny first gear. No savings there. The 833OD's were good and may save you some fuel in a car. As for your Auto equipped Dart Lets see where your at tune wise and maybe we can increase your mileage enough that you wont have to go thru a trans change.
Shoot us where your at and lets see if we can help you improve your mileage.
Frank