After reading some more I do have another question.
It seems some forums are saying that going to a different rear end (3.45 or 3.08) will lower my mileage. Not finding any math or reasoning to back their statements up though. I thought a drop in gears would help mileage.
Maybe a 3.08 would be bad in the lower gears/speeds but how about the 3.45? I mean, we look at grill blocks, pizza pans, removing passenger side mirrors, etc. all to gain a couple of mpg. Is this a viable (though expensive) option to gain 1-2 mpg? It's not like I can afford to do it right now, but after doing some little things (and getting back to work) maybe someday I could afford it. I'm just looking at future options. The truck is paid for and in great shape. I think I'll be driving it for a long time.
Thanks
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