I've done it on three trucks. One out of necessity because I put in a
bigger (heavier) motor and the other two just because I wanted to. I raised
my wife's '94 K1500 Suburban about 3/4" and raised my '95 K2500HD about
3/4"-1". I had all three trucks aligned immediately after I did this
because they were out of wack.
I would never recommend more than 1/2"-3/4" because they're just not
designed to be a lifting mechanism. Honestly, I don't really recommend
doing it at all. The adjustment that's there is for just that - adjustment.
I didn't want as much lift as the kits offer, so this is why I opted for
doing it this way.
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