Re: how much lift?
I just installed a 6" all spring lift in a 72 GMC long bed. So far these are the items I had to add because the 6lift. Raised steering arm and shocks came in kit. Fortunantly my front drive shaft was long enough (fingures crossed) it already has the double cardon joint. The rear drive shaft will bolt up but there is only approx 1/4" of slip play on the drive shaft, I will need to replace the rear drive shaft, it will need to be longer. Front and rear brake lines need to be lengthened, the front and rear diff vent hoses need to be lengthened. The emergency brake cables, from the frame bracket to backing plates on rear wheels came up short after lifting. I relocated the emergency brake cable brackets to the bottom of the frame. The other option is the get longer e-brake cables. The lift kit I got came with a 1" transfer case drop. This 1" drop caused the transfer case to hit the crossmember and put the front drive shaft at an extreme drive angle. So I fabricated some 1/2" spacers and raised the transfer case up 1/2" splitting the differance of the original 1" drop. By doing this the transfer doesn't hit the crossmember and the front drive shaft angle isn't so steep. I haven't driven the truck yet due to I am still restoring it so I don't know how the 1/2" spacers are going to work. I hope taht made since. I think that covers what I had to do when lifting a 1/2 ton to long bed.
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