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Rebuild it! But when?

This is a discussion on Rebuild it! But when? within the Internal Engine forums, part of the LSx Technical Help Section category; When should I rebuild my LS1? I have 145K miles on it. Starts and runs perfect....

  1. #1
    Junior Member
    Join Date
    Sep 2007
    Azusa, CA

    2000 Formula

    Rebuild it! But when?

    When should I rebuild my LS1? I have 145K miles on it. Starts and runs perfect.

  2. #2
    Senior Member slims00ls1z28's Avatar
    Join Date
    Apr 2007

    2005 GTO M6 Black
    2000 Z28 A4 Red

    When you start having a problem. I had 147K on mine no problems that were not cause by an idiot mistake. But with the head off the cylinder walls on the remaining ones looked good as new. As long as its not smoking like a lit chimney or making obvious death rattling noise leave it be.

  3. #3
    2 SS's are better than 1 Jays00ss's Avatar
    Join Date
    Jun 2007
    Lathrop, Missouri

    NBM / Silver
    00 SS / 71 SS Elcamino

    I have seen ls1 cars with 245,000 miles that have never been rebuilt and still running strong. When your compression gets too low or your burning too much oil then I would worry about it. Until then change your oil every 3-5k miles and enjoy it.
    2000 SS Camaro Heads, Large cam, Fast 90, 9"w/430's and locker, yada yada yada... you get the picture

    1971 SS ElCamino 402 Big Block 550HP

    2006 Silverado 2500HD 496 cubic inches of pure muscle

  4. #4
    KWK N NUF TheKitchenSink's Avatar
    Join Date
    Mar 2006
    Arlington Heights, Illinois

    2001 Trans Am WS6

    Dont fix it if it aint broke

  5. #5
    boycott wal-mart
    Join Date
    Jan 2007
    S. Carolina

    98 T/A WS6

    ive got 150k on mine right now. no knocks, smokes, or leaks. runs real strong. i was tempted to get a new shortblock also, just cuz i felt i would need one soon. but after talking to people and thinkin about it, that would be stupid right now since its running fine. im replacing the timing chain, oil pump, upgrading the cam and calling it a day. if you really want to replace it now, at least beat the s@!* out of it until it blows up. then you wont feel like your wasting a good motor.

  6. #6
    Stang Reaper LS1Formula01's Avatar
    Join Date
    Nov 2006

    Pewter Metallic (1of?)
    2001 Formula M6(1 of 225)

    rebuilt mine at 80k. had two pistons burn out on me . but it gave me the oppurtunity to freshen everything up and get it running the way i want it to (cam headers and what not...) . motor is going back in tomorrow night!

  7. #7
    Member ApexVIII's Avatar
    Join Date
    Jun 2007
    Modesto, CA

    1998 Camaro Z28

    Quote Originally Posted by TheKitchenSink View Post
    Dont fix it if it aint broke
    YEA when it blows then worrie about it lol... but check in to prices a head of time then when it blows you know how much you are going to spend.
    M6, Lid, Ported and Polished Throttle Body (By Me!), LT, Custom Catted Y, Electric Cutout, PHB, LCA13.21@108 with a 2.3 60'

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