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Thread: How to 4L60E to 4L80E trans swap

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  1. #1
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    Mine has been making some noise, too. Sounds like something is rattling around inside it maybe in the convertor. Still runs and drives fine but its nowhere near as quiet as the original 60e. Like I've always said, these 80e transmissions are not 100% indestructible, they have parts that are designed to wear out and then there are a few small parts that break and a couple pieces like the roller assy in the center support that has a poor support design. They sure do handle the abuse a whole lot better than any of the 60e's I've had. Even the 60e that came out of the GMT900 is toast, fluid is dark.

    Good luck with the 80e buildup, they're a very simple design and you should have no problem doing it yourself.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  2. #2
    Join Date
    Mar 2007
    Posts
    1,705
    Quote Originally Posted by RedHeartbeat View Post
    Mine has been making some noise, too. Sounds like something is rattling around inside it maybe in the convertor. Still runs and drives fine but its nowhere near as quiet as the original 60e. Like I've always said, these 80e transmissions are not 100% indestructible, they have parts that are designed to wear out and then there are a few small parts that break and a couple pieces like the roller assy in the center support that has a poor support design. They sure do handle the abuse a whole lot better than any of the 60e's I've had. Even the 60e that came out of the GMT900 is toast, fluid is dark.

    Good luck with the 80e buildup, they're a very simple design and you should have no problem doing it yourself.
    So what now....our we helpless, all those (like a zillion) posts that the 80e in stock form and a shift kit will hold 600 tq are what? BS?

    What is the next step? Inner parts dead on so little torque !!!! Personally I asked a fully billet internally (all OEM parts replaced by custom made billet parts) and the top of the top that advertisement can give me.....but have no faith.

    I haven't done the install yet, waiting on the SFI flywheel, But I wanna be ahead of the game.....what should I have to buy now, a Lenco for sad 700tq engine !!!!!!

    Can the wounded tell me witch way to go when I get hit by the bullet !?

    Funny thing is that A.N. advice me to buy this vendors bulletProof Trans, and make it live like 3000 miles and 10 passes!!!
    And now Karma strikes back on him.....how it taste A.N.?

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