Cat engine?

Discussion in 'Peterbilt Forum' started by taggit, May 22, 2026 at 4:53 PM.

  1. May 22, 2026 at 4:53 PM #1
    taggit

    taggit Bobtail Member

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    Apr 6, 2022
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    What cat engine came in the 87 379
     
    taggit, May 22, 2026 at 4:53 PM
    taggit, May 22, 2026 at 4:53 PM
    #1
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  3. May 22, 2026 at 5:06 PM #2
    wore out

    wore out Numbered Classic

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    3406B gonna be a late 7FB or early 4MG prefix.

    Post a pic of the drivers side and I can tell you. Provided what’s in it is original
     
    wore out, May 22, 2026 at 5:06 PM
    wore out, May 22, 2026 at 5:06 PM
    #2
    PSM379 and Tall Mike Thank this.
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