Message: Just purchased an '04 QC w/4.7/5spd auto/posi..has 3.55 ring/pinion set-up..mods include FIPKII and catbacks....considering lowering to the 3.92 (could not find one w/l.s.d. and 3.92..opted for the locker). Who's made the change out there...??? Pro's & Con's??
Also...what computer mod's are available??
JohnnyB
P 1
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Subject: 3.92 ring/pinion swap