In all honesty, I believe that the race/extreme settings are very similar to the tow settings as far as the shifting strategies go.
However, towing 17K with an extra 90-100 HP (unless you have other modifications, you aren't seeing anywhere near 140 extra HP) isn't really the best thing you can do for the rest of your drivetrain (namely the transmission and rear axle). There is a very knowledgable person who used to frequent the Powerstroke Nation forums that is a very intelligent guy. He found out that towing heavily with 300 RWHP on tap stresses the rear axle horribly because the parts simply are not big enough and too much heat is generated in the fluid. I don't think that he was towing more than 17K when he toasted the ring and pinion either.
I'm sure Bill could line you up with something but I would strongly recommend NOT doing it.
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Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years.
Eight 7.3L PSDs in the driveway including a 1994 Crown Vic and 1973 F100/2002 F350. Looking for the next victim.
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Fri, March 26th, 2010, 08:00 PM
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