Unlock your SUPER-POWER

Tire Pressure

Tire Pressure is HUGH, especially on steer tires.  I am fairly confident outside companies that mount the tires for the factories do not air the tires per the advertised pressure.  Most likely they use some pre-determined pressure, like 100 - 105 PSI, across the board.  If you look at a tire OE chart the Pressure is tied to the Load Rating.  This can vary from 105 to 130 PSI.  

Allison PTO operation

The 1000/2000 Series transmission utilize a 6-bolt PTO which operates like a PTO on a manual transmission.  The only way to put the PTO in gear is to stop the truck. If the torque converter is in lockup (higher gears), the speed of the PTO drive gear is equal to engine speed (Lockup Mode).  If in converter mode (lower gears, neutral, reverse), result is variable speed and torque/RPM is always lower than engine speed.