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Message: [QUOTE="swinky, post: 968417, member: 10960"] I had a brand new trans put in my 2003 6.0 and when tuned I could feel slip in 5th (direct clutch) it's always hated any type of downshift to 5th while under power. My trans only lasted 3 weeks at around 575hp and I'd guess around 900tq. After doing some reading I blame the factory 2003 TCM flash 100% my truck is on small tires and is around 7400lbs. There's definitely a big improvement on the 6.4 package when it comes to transmissions. Sent from my SM-T210R using Tapatalk [/QUOTE]

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