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KCB serial number look up?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by OFT2024, Mar 17, 2025.

Mar 17, 2025 #1

OFT2024 Bobtail Member

17

2

Apr 23, 2024

0

Can anyone look up Kcb40386 for me?
Trying to find HP range thank you

OFT2024, Mar 17, 2025

OFT2024, Mar 17, 2025

#1
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Mar 17, 2025 #2

bjytech Light Load Member

246

222

Nov 9, 2013

Ohio

0

That serial is good for 335-470HP uprate family "B", came factory set at 410HP.

bjytech, Mar 17, 2025

bjytech, Mar 17, 2025

#2

OFT2024 Thanks this.
Mar 17, 2025 #3

OFT2024 Bobtail Member

17

2

Apr 23, 2024

0

If I am understanding this correctly the internals per that family will only hold 470hp regardless of tuning ect

OFT2024, Mar 17, 2025

OFT2024, Mar 17, 2025

#3
Mar 18, 2025 #4

bjytech Light Load Member

246

222

Nov 9, 2013

Ohio

0

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.

bjytech, Mar 18, 2025

bjytech, Mar 18, 2025

#4