XT program came out in the late 90's and was only put on Macks that were all Mack (I am sure there have been some excetpions) 2000 and up Macks should have the 460P rating avable 487hp from 1500-1900rpms a straight 460 and 460E torque cuve is as flat as Kansas the P rating put alot of Arch in the curve ECM would be step one Step 2 North West deseil makes high flow injectors now for E7 and E-tech 30-40% increase so it is possible to up rate the motor to around 550 you would need watch the gagues running one that hot I have 01 Vision set for 427 and a 13spd and have plenty of power
Need more horse power for my Mack.
- Thread starter Truckie
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Allikatzpop
Registered User
I drove a 2003 w/ 460and 10 speed auto. The engine was set @ 120%.
I did not know until I had it @ Mack in Somerset,Pa. for some minor work.
The shop foreman had it hooked to his laptop and told me it was @120%
He had never seen one set like that before..
It had 550 HP and 1850 Lbs of Torque
Also make sure the governor setting is set on "All Speed" not "Min/Max"
80,000# and it was never afraid of a hill...
I did not know until I had it @ Mack in Somerset,Pa. for some minor work.
The shop foreman had it hooked to his laptop and told me it was @120%
He had never seen one set like that before..
It had 550 HP and 1850 Lbs of Torque
Also make sure the governor setting is set on "All Speed" not "Min/Max"
80,000# and it was never afraid of a hill...
James kuhlman
Registered User
I had the 460xt program before we had to replace the motor....and they wont install it due to epa...does anyone know who would do it besides a mack dealer???? Or maybe someone that would be willing to do it...crazy how you can build a cat to run but mack dealers wont do anything..smh
Try calling Antrim Diesel in PA. They got 100 HP out of my EM-7 with injectors and a turbo. Mine is mechanical, so yours will be different. I don't think Pittsburg Power does anything with Macks, but you could call them to confirm.
