KCB serial number look up?
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by OFT2024, Mar 17, 2025.
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That serial is good for 335-470HP uprate family "B", came factory set at 410HP.
OFT2024 Thanks this. -
If I am understanding this correctly the internals per that family will only hold 470hp regardless of tuning ect
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With factory tuning, yes.
There are some custom tuners out there but that's not something that's really allowed to discuss on this forum, and pushing them too hard tends to drop reliability quite a bit.
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