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74 BB Smog

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  • Mark Stavropoulos

    74 BB Smog

    Did LS-4's with M40 (automatic) transmissions have A.I.R. pumps?
  • Joe L.
    Beyond Control Poster
    • February 1, 1988
    • 43193

    #2
    Re: 74 BB Smog

    Mark-----

    Yes, the 1974 LS-4, with either manual or auto trans, did use AIR. As I recall, the only 1974 Corvettes which did not use the AIR exhaust emissions control system ("smog pump") was the L-48 with automatic transmission and FEDERAL emissions certification.
    In Appreciation of John Hinckley

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