Become a ltxtech.com member, Click here to register!

Results 1 to 4 of 4
  1. #1
    InActive Member


    Status
    Offline
    Join Date
    Nov 2010
    Location
    SoFla
    Posts
    1,098

    Default 5.3 Vortec. Differences between Flex Fuel and Non Flex Fuel Engines.

    I'm curious if anyone knows of any real differences between the flex fuel and non flex fuel versions of the 5.3L Vortec engines. Planning on swapping one in a late 80's land cruiser and wonder if there is any pros or cons of acquiring this engine?
    95 Impala SS Clone

  2. #2
    MAD ABOUT LTX's


    Status
    Offline
    Join Date
    Jun 2012
    Name
    Mike
    Vehicle
    1993 Camaro Z/28 A4 2006 Chevrolet Avalanche 1500 1970 Firebird Espirit, 1972 Camaro Sport Coupe
    Location
    Vallejo Ca (SF Bay Area)
    Posts
    1,609

    Default

    Far as I know its a different fuel tank, lines ect and pcm tuning so you should have no problem with the swap.
    If you don't stand behind our MIlitary then feel free to stand in front of them. <---- This is my oldest son (PROUD DAD HERE) Mike (just plain mad) Madman337 1993 Camaro Z/28 A4 all stock other than a muffler and LCAs @292K+ miles. 2006 Chevrolet Avalanche. 1970 Pontiac Firebird. 1972 Camaro, 1994 Corvette, ​17 Fusion Sport AWD V6 Twin Turbo

  3. #3
    VIP Member


    Status
    Offline
    Join Date
    Apr 2011
    Name
    KYLE
    Vehicle
    95 MQBM Z28
    Location
    davison michigan
    Posts
    3,874

    Default

    what he said^^^^^... Injectors as well

  4. #4
    InActive Member


    Status
    Offline
    Join Date
    Nov 2010
    Location
    SoFla
    Posts
    1,098

    Default

    Sounds like everything I found. Some say the valves and seats are made of a different material but that shouldn't matter.

    Thanks for the reply's guys.
    95 Impala SS Clone

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •