djg wrote:
My 7.3 is stock tune with a banks on it, runs exceptional just tired of 55 to 57mph to keep fuel mileage decent at 60mph I'm running 2000rpm and fuel milage drops so that has been my thinking on changing gears
Stock fueling and a Banks what? Exhaust, turbo, intercooler, bumper sticker?
Question is power and speed vs mileage. Gearing helps to an extent, but IMO not as much as you think. Now, are you running out of comfortable rpms at your intended speed? Do you want to just drive 60 mph giver take? If so keep the gears and the power they afford you.
You won't pay back mileage increase due to gears in a lot of miles. That would be the last reason to re gear IMO.
If you want a little rpm decrease, upsize the tires next time around.
You need to balance how much power to spare you have now with cutting the gearing by that much. And does your Trans have enough gears and the right ratio to support those new higher gears at your intended speed?
2000rpms isn't _____. Sounds like the low end of operating range for a 7.3 if you're not just empty cruising. What will that do to your (4 or 5 speed) trans?