6" lift and 37's??

[jkade]

I have a 86 k10 with a 4" lift and I clear 35's no problem. Going to 1 ton running gear and want to run the 37" military tires on 16.5" rims. Will 6" lift give me enough clearence to run 37's? I have 4" springs on the front so can I get some longer shackles and a zero rate block to give me another 2"? Though about a shackle flip on the back and a 2" block. Give me some idea's guys.