No, he just needs gears and tow haul so he locks 3rd.
I could do 80 with the same truck, same tire diameter, no tune, 4.10s, and headers. Headers isn't going to get THAT big of an improvement.
Brody, throw that shifter in and we/you can get your tow/haul set up to really tow
Agreed. Mine which is only mildly tuned with 4:10 gears and stock tire size will haul 6000lbs on flat ground at 70 like nothing is back there.
If I remember correctly, the factory tune will lock the TC if D is selected or OD is selected. Just needs to be over the minimum mph, which for a 4:10 gear w/245s I think was 41mph up to 25% throttle position.
@BowtieBrody, those gears and tire combo won’t let you lockup unless you get close to around 58mph at any throttle position even when D is selected. It’ll be like a whole new truck once you gear down those diffs.