The important thing is not to over do it. A one inch block increases the torque load less than changing to 4.88 gears (25% vs 30%). An anti wrap leaf or even a cut down main leaf from an S-10 or Dakota pack reduce the risk of wrap as will not hammering the throttle when you have a bad rear wedge. The softer and flexier the springs the better it will wheel but at the greater the risk of axle wrap. If you build your own spring packs its no big deal.
Here is one of several posts: Note Goatman use to run 2.25" of blocks but always ran a track bar. I wouldnt suggest anything over 1" based on what I have read here. I have never had any trouble with 3/4 inches of short leaves used as a cheap lift block. I would defer to any comment he would care to make on the subject since I have never run a true block (yet), just stacked 6" leaves.
04-27-2004
Goatman
Forum Addict Join Date: May 2002
Location: Bakersfield, CA
Posts: 6,042
Re: 1" lift blocks + axel wrap
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Tomken makes a solid steel 3/4" block that is pinned through, designed just for leveling out lifts. One of those isn't going to hurt anything, they're cheap, and worth a try. Re-arching the springs doesn't last real long, especially in a 4x4 rig where the springs are bent through their full range of travel when wheeling.
The easiest thing to do is to just add another leaf. You get 1/4" just from the thickness of the leaf, plus it adds a little spring rate and a little lift. The springs with an additional leaf (or two) will outlast re-arched springs and add some weight carrying ability. Get a leaf from a stock XJ or YJ pack or from just about anything that has a 2.5" wide leaf.
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Richard G
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Rockin' XJ Jamboree, Johnson Valley '06
70 Jeeps in the desert and real good times