E-Fans

[Jackpine]

Yes! DO put the gear PID into your display! Some of what you posted doesn't make sense to me. You should NOT see 4th gear during a passing maneuver! I would expect the transmission to drop probably into 2nd, but at least into 3rd when you are passing at WOT. You'll only see 4th when the load on the powertrain is low, at "cruise", probably above 45-50 mph, depending on how you have things set up.

The low gears and bigger tires MAY keep you in 3rd up to, say 55, but I would not expect it to be much more than that. A lower axle ratio is going to put more load on the powertrain and that will keep you in 3rd gear longer. You INCREASE your axle ratio, or mount smaller tires if you want to get into 4th gear sooner.

- Jack

[Longshot270]

Hey Jack, if he is passing someone at maybe 50-75% APP then he is feeling the 4th gear shift at 80. Otherwise it will be running in 3rd at WOT for the 80s. Sometimes the third or fourth gear shift is so smooth you dont feel it but you do feel the torque converter locking.

[88Racing]

My rational on the gearing was to drop from whatever the truck had down a step more.
So now I see it's 355.
But.
With the slightly larger tire the 33's.
Typical stock is about 31.9".
So the added mass of rolling force may dampen some of the advantages of the larger tire.
That's why I suggested the gear change.
By swapping gears down to say like 308, there's less rolling mass.
Hmmmm interesting concept?