if it had 4.50 it sure seems like it'd accellerate alot better on the freeway its not very high up in the rpm's and considering this truck didnt have a tow package i dont think it had the gears for it. 3.73 are pretty common, but these days all these geeks with these fancy wheels on these diesel 6 speed auto trucks <what ever happened to a truck being used for working? and a manual trans in a truck whered that go?> have like 4.10's to compensate for the big wheel sizes. these days it think trucks have become more of a fashion statement then they are useful. i drive a new chevy with a 6 speed auto at work, i hate that transmission with a passion it shifts to damn much! you nail it to get ont he freeway you feel it downshift 3-4 times get real!!!!!!!!!!!!!!!