So I recently picked up an 04 Silverado. 4x4 5.3L 9" lift 35" tires. Runs good but sluggish for acceleration and horrible gas mileage. I suspect stock gears still in which are 3.23's maybe or lower.

Anyway I'm looking to buy 26' trailer. I feel I have low torque now and can't imagine towing. I plan on intake and tuner.

What is a good gear setup.