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Discussion Starter #1
Hello

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!
 

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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.
 

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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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