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  1. #1

    Default 90' silverado 8 or 6 inch lift for 38's?


    I have a 1990 Silverado flatbed, I am looking to put 38" BFG mud terrains on it, my question is, will a 6" lift of any kind fit those tires? I dont care if its tuff country, super lift, sky jacker.. whatever, I am just trying to figure out what lift will put my truck high enough to fit 38's. I am also considering a 2 inch spacer to set the wheels out quite a bit if that helps anything?

    Also, if i go 8 inches, will i need to lengthen either of my drivelines? and what affect will the high lift, tires, and driveline do to my gearing? I was planning on gearing it down anyway but if anyone knows what size of gears will be best please do tell.

    any help would be great, thank you!

  2. #2


    Welcome to the club. If your truck is a 1/2 ton you will need 9" of lift for 38's. Go with a 6" suspension lift and 3" bodylift. This way you won't need any drive shaft mods. Also if it is a 1/2 ton, there axles don't really like any tire over 35" tall.

    2005 Chevy Silverado Z71 Crew Cab
    6" Skyjacker lift w/Edlebrock dual front remote resoviour shocks, single rear remote. Rancho skid-plate.
    17" x 9" M/T Classic Lock Wheels, 35" BFG A/T or M/T tires
    4.10 PercisionGears w/factory locker, T/A Performance rear-end cover
    Banks CAI intake, ported throttlebody, JBA coated headers, over-sized Magnaflow cats, Magnaflow cat back exhaust, Diablo tuned
    B&M aluminum deep transmission pan
    Warn brush guard w/Warn 9.5 XP winch, PIAA bulbs, Line-X bedliner, AWS Black tool chest, Extang tonneau cover
    Weather Tech floor mats
    Cover-Craft seat covers
    Dash mat cover
    Formula One window tint
    One black Lab in rear seat.

  3. #3


    yeah i have heard that, would it be worthwhile to get a straight axle conversion?

  4. #4


    If you want to get it on with 38" tires, then go with a 1-ton front straight axle and rear axles. A GM corporate 14 bolt for the rear can be found at most auto recyclers.

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