Hi Guys, I just got my H3 few days back, yesterday I took it for its first test in the Arabian Desert.
Anyway, before my H3, I used to drive (still do) a 2000 Chevy Blazer ZR2 (
http://www.zr2.com) in a way the H3 replaces the ZR2 in the GM lineup, it has the same back axle, same front suspension, same shocks, same Gearbox.
Back to the subject, I have fiddled with my ZR2 and know a thing or two about torsion bar lifting. First of all, lifting the torsion bar will put tremendous stress on your ball joints, they will wear out before their due time. 2 inches is the MAX you can lift, you can even lift it more than 2 inches but the ball joints will fail within days. 2 inches will make'em fail within 3-4 months depending on your driving habits. 1 inch torsion bar lift is relatively safe.
To rememdy this problem, there is something called "Torsion Bar re-indexer" available for Blazers and Tahoes and all IFS-torsion bar trucks (not sure if it is avaialable yet for H3s) you can find them on any website like Summit Racing (
http://www.summit.com) which basically is an adapter that you install at the body-end of the torsion bar (not the suspension end) and then fix your OEM torsion bar on that adapter. it's like "extending" your torsion bar. THEN you can lift your truck by 2 inches and more without affecting your ball joint performance. But I guess we'll have to wait until someone comes up with "re-indexers" for the H3.
Just my 2 cents
DuneH3