Do I need to regear?
I am running 33.7 inch BFG tires (305/65/18) and I am towing a two horse trailer. I have on order an 87 custom tow tune, is this enough with 3.73 gears or do I need to change? The truck is a 2006 f-150 5.4l 4x4 super crew with an automatic trans. The truck is used for city and highway driving, and towing. If I need to change should I go with 4.10 or 4.56 gears.
Thanks
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2006 F-150 4x4 5.4L-Airaid CAI-Magnaflow cat back exhaust 3" in w/dual 2 1/2 out-2" Revtek leveling kit-Air bags in rear- BFG 305/65/18 tires-Gryphon
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