How much can you lift a truck before you need to start adjusting the drive train?

I was wanting to put a 2-3 inch lift on a chevorlet 2500HD 4X4 (2006) how much could I lift it before I would need to adjust parts, or do I need them adjusted no matter how big? Also ive heard that drive train is the only thing I need adjusted, is that true?

One Response to How much can you lift a truck before you need to start adjusting the drive train?

  1. ouch June 15, 2010 at 7:12 pm #

    To answer all your questions in detail try the fullsizechevy.com truck forum.

    But basically any lift you would want to at least adjust the alignment even if you only do a torsion bar crank and add rear blocks. On an 06 you can do 2-3" in just torsion bar crank and lift blocks. Then add larger tires and you would be near 6" of lift.
    If you want 4-6" "suspension" then you would need a kit. Most are knuckle kits and torsion drop down brackets on front. Because you would be changing the knuckles the alignment would need checked anyhow.
    As far as other drive train parts. When you go to a larger tire then you would need re-cal the speedo and depending on the rear ratio, a re-gear could be required if your tires are too big. And too big I mean anything over the equivilant of a 35" tall tire. But a re-cal on the speedo or ECM which any 4x shop can do will change the shift points ect to compensate.
    but check out the fsc.com for sure as they can answer all your questions.