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What does the "L" stand for when labeling an engine as a "350L"?

Discussion in 'The Garage' started by Eric M., Sep 27, 2006.

  1. Eric M.

    Eric M. 1/2 ton status

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    I'm trying to order a few parts from the LMC cat. There are 2 different diverter valves listed, one is for the 350, the other is for the 350L. What is the difference? How do i who which one i have?

    I have an 80 GMC C3500 pick up.

    Thanks,

    Eric M.
     
  2. ct85k10

    ct85k10 1/2 ton status

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    3rd letter in the vin code page 12 in the lmc catalog
     
  3. Eric M.

    Eric M. 1/2 ton status

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    Ahhh, thank you much.

    Now for the next question, there were two 350 engines, the L and M. Anyone know what the difference is?

    Thanks,

    Eric M.
     
  4. BadBob

    BadBob 1/2 ton status

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    One is for HD emissions over 8600lbs GVWR. It's also rated about 10hp less, and had about .1:1 more compression.
     
  5. mosesburb

    mosesburb For Rent Premium Member GMOTM Winner

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    "L" is the light duty 350 (passenger car/light truck-low GVW)
    "M" is the heavier duty 350 (Usually 8600 GVW and up).
    You should havethe "M" motor in your C3500.
     
  6. Eric M.

    Eric M. 1/2 ton status

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    Thanks.
    That answers all my questions!

    Eric M.
     

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