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What small cam do I have???

Discussion in 'Ask An Owner Operator' started by Tbag3, Dec 13, 2025.

Page 2 of 5
  1. Dec 13, 2025 #11
    Tbag3

    Tbag3 Light Load Member

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    87 KW. The stamp on block says 71
     
    Tbag3, Dec 13, 2025
    Tbag3, Dec 13, 2025
    #11
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  3. Dec 13, 2025 #12
    OLDSKOOLERnWV

    OLDSKOOLERnWV Captain Redbeard

    19,034
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    The serial number to the engine will be in 1 of 2 places. Look behind the air compressor just below the head gasket of #1 cylinder, if you find nothing then look just below the head gasket of #6 cylinder. Serial number will be on the left side of the block….
     
    OLDSKOOLERnWV, Dec 13, 2025
    OLDSKOOLERnWV, Dec 13, 2025
    #12
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  4. Dec 13, 2025 #13
    Tbag3

    Tbag3 Light Load Member

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    Ok I’ll walk down and look. Thanks
     
    Tbag3, Dec 13, 2025
    Tbag3, Dec 13, 2025
    #13
  5. Dec 13, 2025 #14
    abyliks

    abyliks Road Train Member

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    ludlow MA
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    #10 button and shim the governor IIRC…
     
    abyliks, Dec 13, 2025
    abyliks, Dec 13, 2025
    #14
    Oxbow, Diesel Dave and Tbag3 Thank this.
  7. Dec 13, 2025 #15
    Tbag3

    Tbag3 Light Load Member

    90
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    Jul 5, 2025
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    Tbag3, Dec 13, 2025
    Tbag3, Dec 13, 2025
    #15
  8. Dec 13, 2025 #16
    Tbag3

    Tbag3 Light Load Member

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    Jul 5, 2025
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    I think it’s NA 10 15 71 10213825
     
    Tbag3, Dec 13, 2025
    Tbag3, Dec 13, 2025
    #16
  9. Dec 13, 2025 #17
    Tbag3

    Tbag3 Light Load Member

    90
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    Jul 5, 2025
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    Might be 925 for the last 3
     
    Tbag3, Dec 13, 2025
    Tbag3, Dec 13, 2025
    #17
  10. Dec 13, 2025 #18
    beastr123

    beastr123 Road Train Member

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    Moose Jaw SK CAN
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    the pt pump was originally set at 335hp
    where it is now is anybody's guess
    if 290 pistons (higher compression) were installed and the pump buttoned and shimmed it would outpull a newer 400 big cam although they ate headbolts like candy
     
    beastr123, Dec 13, 2025
    beastr123, Dec 13, 2025
    #18
    MACK E-6, Tbag3, Oxbow and 1 other person Thank this.
  11. Dec 13, 2025 #19
    Oxbow

    Oxbow Road Train Member

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    An 87 with a small cam seems unlikely to me, but what do I know!
     
    Oxbow, Dec 13, 2025
    Oxbow, Dec 13, 2025
    #19
    Diesel Dave Thanks this.
  12. Dec 13, 2025 #20
    Tbag3

    Tbag3 Light Load Member

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    Jul 5, 2025
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    Not sure what came in it, but it’s a small cam in there now. It’s a 71 model. Truck is a 87 T600 with a perfect body and frame. Old man had it and was redoing it and died. A guy got it at his estate sale for the engine and cab but sold to me instead. It will be a process but I’ll have it on the road. I drove it 3hrs home
     
    Tbag3, Dec 13, 2025
    Tbag3, Dec 13, 2025
    #20
    Tug Toy, OLDSKOOLERnWV, Diesel Dave and 1 other person Thank this.
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