Any Info Appreciated

[rabusa]

I am currently starting my project and I would like for anyone that has had any experience to share any information that they might have. I have a 77 k10 and I have a 90 suburban 3/4 ton I am swapping the axles and engine from the suburban into the truck and installing a 12 inch superlift the engine swap is not an issue just any info on the axle swap and lift install would be appreciated. Also any pictures of truck already with the 12 inch lift would be nice to so I can get an idea of the height I am going with a 40 inch tire. I should also ad that its only a show truck not for any aggressive use.

[andrewmp6]

A 12 inch lift will take custom driveshafts and gearing to match the tire size.But with a 40 inch tire i would upgrade to 1 ton axles.

[special-K]

As far as swapping axles goes, it will be straight forward bolt-on easy. For 12" of lift you will be doing some mods. I've never done that much lift without using Rockwell axles, which make driveshaft angle no issue. I'm not sure what all people need to do, but the length and angle of driveshafts will change and need to be dealt with. Crossover steering for sure.

[andrewmp6]

And will need a trackbar.

[Axe]

I got an 8" on my blazer with a 3" body. The rear driveshaft will have to have a cv joint in it, my front shaft I put an 80 degree joint on each end. The 2 shafts was about 2 grand. If that is a 3/4 ton in the suburban your front axle will be a GM 10bolt, which is a half ton axle with 8 lug outers. You need to find a dana 60 from a 1 ton, the crossover steering will be cheaper for a dana 60. If you can find one of those old military chevy trucks they have a dana 60 front and 14 bolt rear with 4.56 gears and Detroit locker in the rear. The 4.56 will be a good gear for the 40's.

[dieseldawg142]

if you want to fit a 40" tire, why dont you drop down to an 8" lift. a 38-40" tire should fit, maybe trim your fenders or do like i did & throw some BW cut-outs on the fenders.
i dropped my t-case an inch, was able to use the stock fr. shaft with ground stops & a longer slip yoke, rear shaft is 100% stock with just a dropped carrier bearing, mind you though, my truck's a 1 ton crew.
and if your going to run that big, as stated, get a 60
8"lift, bushwacker cut-out's, 38.5"s


42" tires with room to spare...

[Axe]

With my 8 suspension and 3 body and with cut outs pushed as far apart as I could get them my 47's still hit sometimes. But I'm still street legal in Georgia.