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L31 RPO Code???

Discussion in 'GM Powertrain' started by TrailFiend, Dec 31, 2007.

  1. TrailFiend

    TrailFiend Rockstar

    so, im decoding my RPO codes, and so far all is well...except when i got to the engine code which is "L31." this is what it says:

    L31 : 409 CID V8 400HP (SPECIAL HIGH PERFORMANCE-SOLID LIFTER CAM)

    i thought that it had a Vortec 350? can anyone clear this up for me please, thanks!
  2. GM_Guy

    GM_Guy Epic Member 5+ Years 500 Posts ROTM Winner

    according to My list, L31 is :engine, gas, 8 cyl 5.7L CPI
  3. TrailFiend

    TrailFiend Rockstar

    that makes sense. im pretty sure i have a vortec 350 5.7L SFI.
    Last edited: Dec 31, 2007

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