Thor Forums

[Beau388]

The designed operating limit on the Ford Triton V-10 is 5,250 rpm continuous operation. The computer will not let the engine exceed this rpm under any circumstances. The computer senses engine vacuum and and uses that and RPM to determine if more power or better fuel consumption is achieved by shifting to a higher or lower gear. Individual gear selection is only provided in 1, 2, 4 in the 6 speed transmission. When climbing the western mountains, I usually shift into 4th at bottom of the pass and and maintain 4,000 rpm (max power RPM) all the way up. It saves shifting wear on the trans and keeps the trans from overheating when pulling a 4,500 lb load. Using the Five Star Tune will allow the trans to remain in a higher gear in high load situations.