1974 L-48s with TH400 Did Not Have Air Pumps - NCRS Discussion Boards

1974 L-48s with TH400 Did Not Have Air Pumps

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  • Paul L.
    Expired
    • November 1, 2002
    • 1414

    1974 L-48s with TH400 Did Not Have Air Pumps

    Did you know that? The 1973s and 1975s did. Why?
  • John H.
    Beyond Control Poster
    • December 1, 1997
    • 16513

    #2
    Re: 1974 L-48s with TH400 Did Not Have Air Pumps

    That's correct - the '74 Federal L-48 auto didn't have an A.I.R. pump; they must have tweaked the tuning just enough to get it through certification without A.I.R. It's far easier to get an automatic through emissions certification than a manual.

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