Need help, before I break somethin'!!

What year is this truck??



If it truly is a 3406 and not a 3406E she might be right about it falling on its face at 1500 and needing to go up to 2000.

A properly running E series will absolutely fall on its face above 1600/1700.

 

Where is the owner of this truck?
He should be showing you.

It'd be so much easier to show than try to tell.

 

With an E series shift at 1500/1600 on level ground or even lower if you don't have much of a load. This is a powerful engine with a lot of torque and should be able to pick up and go even at 1300/1400 shifts.

If you are loaded heavy and trying to get moving on a hill you may have to go up to 1700/1800 to shift.

I've had a couple of CATs and never got them above 1800 for any thing. Then again I had A LOT of practice.

With a little practice you'll soon be a pro.


These engines DO NOT like high RPMs. Keep those Rs under 1600 and you just might see the MPGs go over 6.
With a 96 T600 3406E and 13 spd if I drove no more than 68 I could get over 7.