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71 fuel pump dating

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  • Mike E.
    Extremely Frequent Poster
    • February 28, 1975
    • 5138

    71 fuel pump dating

    What does anyone know about this? Anything?
    The first fuel pump comes off a 71 LT-1 built in November of 1970. (Both are AC pumps)Stamped on the flange is LH40709. There's no reason to believe that it's not the original pump--grimey and greasy and off a car that hasn't been on the road since the late 70's/early 80's.

    The second is off at late 71 LT-1, built in July of 71 (just 148 from the end of production) Stamped on the flange, in smaller letters than the first,
    38K40709 (38th day of 1971? early for the car)

    Can anyone help with that kind of info? Running change? Two different suppliers to/from AC?

    What's the LH mean? What's the 38K mean? Help, I don't want to lose any more sleep over this!! (actually, don't worry--I do have a life)
    Thanks!
  • Warren F.
    Expired
    • December 1, 1987
    • 1516

    #2
    Re: 71 fuel pump dating

    Mike,

    I just crawled under both '71 LS-6's and it looks like my orange car is still pretty much original, its fuel pump is 19K40770, a March 18 built car. The white cars fuel pump is 297040770, this car has had a restoration of the engine compartment, a April 20 built car.

    Comment

    • Mike E.
      Extremely Frequent Poster
      • February 28, 1975
      • 5138

      #3
      Re: 71 fuel pump dating

      Warren--
      Thanks! Now we need someone to help us figure out what those mean! I appreciate the input--the more we get, the better chance we have to at least surmise something and then try to prove or disprove it.

      Comment

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