What gear ratio will make it to where my rpm's are around 2000 or 2100 ish at 80 mph? and where can i find them?

 

355's maybe? Jeez, dunno really.

 

Why do you want to be set up like that? It will make it laggy as hell around town and tow like crap...

 

i am on the interstate alot and want better mileage, what gear ratio would be better? i tow very rarely anymore

 

More then likely you have 3.73's and I would stick with that. Changing gears is expensive and your no going to recoup the costs in the long term.

Front and rear gear change will run you about 2k or so... Thats alot of MPG to have to save.

 

oh wow, didn't know it was that expensive, i will just stick with the ones i have then, thanks for your help

 

its a lot of money but has anyone run a gear vender? or electric fans

 

Gear vendor is a nice unit, but... Its about 3k installed, which is a TON of fuel.


Electric fans make your truck all but worthless. They just dont move enough air when towing.

 

you might find somebody to trade gears with.

 

You guys are killin me! It's a basic algebra equation: rpm = mph x gear ratio x 336 / tire diameter Simply rewrite the equation to solve for gear and you have (tire x rpm)/(mph x 336) = gear.
Since searching this out on Google never occurred to you, we'll do the math here. I'll have to assume that you're rolling 285/75R 16s.

(32.8 x 2000) / (80 x 336) = 2.44
Accounting for a 4R100's OD of 0.71: 3.55 X 0.71 = 2.52, close enough for this application.

If you're rolling 265/75s, you're going to need a 3.23 gear.

Gears and install aren't cheap, you're going to have to do A LOT of driving to get that money back. If you're that worried about mileage, get a small truck with a V-6 or a Prius! Gotta pay if you wanna play!