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4l60E differences?

This is a discussion on 4l60E differences? within the Automatic Transmission forums, part of the Drivetrain category; Newbie here and need some help. Short story: Bought and 04 LS1 GTO with 45K miles. 3K miles later the ...

  1. #1
    Junior Member
    Join Date
    Aug 2009

    04 gto

    4l60E differences?

    Newbie here and need some help.

    Short story: Bought and 04 LS1 GTO with 45K miles. 3K miles later the A4 tranny let go. 2nd, 4th and rev are out and coolant in the tranny. Ok time far a rebuild.

    Found a 4l60E from a 98 LS1 Trans Am that had been built slightly and 45k miles on it.

    Will this tranny work in my GTO?
    I need somthing just long enough to to the original rebuilt.

    Oh Ya gotta replace the @%!& radiator also!


  2. #2
    Senior Member JaycenK's Avatar
    Join Date
    Nov 2008

    1997 Camaro Z-28

    The old trans sounds like it broke the sun shell, no matter what you put in there the sun shell is a weak link. They make a HP sun shell called the beast but their are other parts that I would replace at that point too.

    As for the trans swap, I think the 04 GTO's had 4l65E's not 4l60e's. Is the motor is an LS2? The difference was the 4l65e's have 5 pinion plants were the 4l60e's had 4. You would be down grading your trans if it is a 4l65e in thier now.

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