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  1. #1
    Jr. Apprentice
    Join Date
    Mar 2010
    Location
    Thornton CO
    Posts
    14

    Default 1988 C3500 catalytic converter

    Hello all. I recently purchased an 88 c3500 dually with a 7.4 litre engine. I am looking for information about when GM started putting catalytic converters on these engines because my truck doesn't have one. Thanks for any info you can give me.
    Last edited by Brandont; 12-26-2010 at 08:30 PM.
    BrandonT
    Thornton CO.
    1999 YUKON DENALI

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