If the old girl has got 4.10's, you're getting about what you should get. I used to get 25-26 mpg (imperial) before I got carried away with BD performance stuff....then it dropped to about 20. But it would haul Azz.....not many other trucks would get it until I hit about 75 MPH, then the gears were holding me back. If those trucks had a lock-up convertor, they would be awesome. They weren't built for smooth ridin' though!


Loved those interiors!! Yours has obviously been looked after well....