Best magnum MPG?

5.9 99 Dak- 16 MPG driving like grandma.

What gears do you have?

My 2000 R/T CC gets 14 in mixed driving, about 1/2 60+ MPH and 1/2 city stop and go.

Over on the Dak R/T forum, that was the best ever of all time!

3.92 rear but in O/D it's 2.7.

Truck weighed 4200 last time I took a load of scrap.


I've often thought of swapping in a 3.55 axle to see if there was a noticeable MPG gain or performance loss.

There's a guy in town that clams to have a '99 R/T CC special ordered with 3.19 gears.
I'd like to know what he's getting.