sierra69

got my trutrac, now whats better 3:73s or 4:11s?its a dd that sees street and highway use,and not much hauling or towing.its a 2007 nb cc 4x2 and 4.8.and if i was worried about gas economy i would have bought a hybrib.trucks are not meant for that!

budhayes3

iTrader: (19)

Hah, didn't know that they were putting rear differentials in the engines now! Just bustin' ya, moved to the GM Drivetrain and Suspension section

Atomic

iTrader: (42)

4.11 would the best for what you listed

axisT6

iTrader: (3)

You forgot one IMPORTANT piece of information... How tall are your tires??

sierra69

Sorry for the screw up guys! Right now im running 265/70/17 and later this year will be switching to 285/70/17.

dlt76028

iTrader: (13)

285/70/17 is a 32.7" tire. If your going that big I would run 4.30s... that would put you at 2165rpm cruising at 70mph.

fastrt

iTrader: (48)

4.10 is a great allaround gear. are you changing wheels and tires later?

sierra69

Not too sure yet. I think i might stay with the 265s.i got smoked by a titan today,i hate that my truck has 3:23s and a timed trottle response.cant wait until i get my mods done.