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  1. Cummins Tech Section
    Did the KDP affect all B series engines including the 5.9L Common Rail? Secondly, my long term project is to swap a B3.9 into my F150. Would it be more beneficial to have the 3200 ve spring or the 3800? I know I would have to replace exhaust springs with the 3800, but I don't want to mess with...
  2. Performance Discussion
    I know there are 3200 rpm gov springs for both the 4bt and the 6bt but does anyone make 4200 rpm gov springs for the 4bt I know they make them for the 6bt.
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