Re: 16 MPG ..... Please Help !!
Welcome.
I'm curious: Why did you choose the 6.0 powered 3500 instead of a lighter (but equally large) Express with a smaller engine?
GM generally does a good job of providing efficient gears but they offer shorter gears as options for people who do no highway driving or prefer faster acceleration. Read the RPO codes from the label in the glovebox and feed them into an online RPO decoder to see a complete list of equipment, including your rear end. I imagine that the 3.73 ratio would be a good match for that vehicle, but that's just a guess. How does it feel on the highway? Does it need to downshift every time you get a gust of headwind, or does it hold 4th gear even while you accelerate up a hill?
That all said, do you plan to do mostly freeway driving or mostly country/town/city roads?
You can certainly increase tire pressure. The van is almost certainly equipped with load range E tires good for 80psi, but the label on the van may specify 65psi. Take them right up to 80psi.
Are you willing to make it ugly? You could add a nose cone and kammback or boattail (search the site for those terms).
__________________
__________________
This sig may return, some day.
|