Gearmesh (Gerald) is the man when it comes to gears. He is a little familiar with doing 9in gears, lol. I went from 3.90-4.30-3.90...3.90's worked better for me. We run 3.90 in all our cars unless turbo now.
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1999 Z28 Camaro|Cut up
2003 CC Duramax Dually|19.5 w/245/70/19.5|5in exhaust
2009 G8 GT 408hp/402tq sae|Rotofab CAI|LS9 Cam|Headers|GXP Mufflers|Custom System
2009 Tahoe stock
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