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Need more horse power for my Mack.
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...- bts4120
- Post #16
- Forum: Everything Big Diesel Powered
