I ran a 3.25 gear with my 4L80E and twin turbo LS2. That trans doesn't have as much reduction in overdrive as the 5/6 speeds or even the 4L60s. With that much power I didn't miss the lower gear and appreciated the extra drop in rpm's going down the freeway. I wouldn't go lower than a 3.50 max with the auto. A T56 likes a 3.70 gear as it has a much taller 6th gear.
Last edited by camcojb; 11-18-2011 at 09:51 PM.
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