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  1. 6.0 Trannie problems
    I have an 06 F250 6.0 with 85,xxx miles on her. The truck always shifted fine when it was stock, but now that i run Gearheads Performance SRL XX tune the truck shifts funky from 3-5. Let me be very specific here... it shifts firm, but it jerks the truck back and forth. Almost the same feeling of...
  2. 6.4L Performance Parts Discussion
    my truck shifts bad around 40 is this normal?? thanks
  3. 6.4 Tranny Problems
    while driving normal my tranny will slip or shift or somthing rightr at or around 40 mph and doesent feel normal at all????:dunno::dunno: my truck is bone stock
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