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Thread: 4L60 or 350T?

  1. #1
    Jr. Mechanic LoneWolf'burban's Avatar
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    Default 4L60 or 5 speed?

    I have a 1992 Gmc Sonoma Gt with a 4L60 behind a 4.3 Vortec. I've heard a lot of bad things about the 4L60 and seem to be experiencing one now. 1-2 shift chirps them tires or scoots the hind end side ways depending on my current driving surface and throtle amount. What all do I need to change out the auto for a stick? I know I'll need a flywheel, clutch, pedal, hydo clutch cylinder. Will I need a new bell housing or crossmember? Which model trans would be best?
    Last edited by LoneWolf'burban; 05-09-2011 at 02:20 AM.
    1992 GMC Sonoma GT 4.3
    1984 C20 'burban 454
    1963 C10 283
    One lead foot
    Two hands that turn a steering wheel very quickly and very well.

  2. #2

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    I would just have the 4l60 rebuilt. They have updated/heavy duty parts for them now and most of the problem area's with them have been improved on.

  3. #3

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    Sure wish my 700R4 would shift hard enough to break 'em loose!
    Jess

    1991 Suburban


  4. #4
    Jr. Mechanic LoneWolf'burban's Avatar
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    Thanks Silveradotrailblazer. That's what I'm thinking because I prefer an auto to a manuel. My hands are usually too busy doing something else in the truck to shift all the time. But I do want a slap shifter for those times I'm playin around. And 1991 Suburban, it was cool for the first 3 days but now it's starting to hurt. The non adjustable buckets don't help either.

  5. #5
    Jr. Engineer racekid91's Avatar
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    NV3500 would be your best bet if you want to go 5 speed.

    Otherwise, there is a ton of aftermarket for the 700R4 and the 4L60E. Mine is "mild" built IMO. I have BandM's 2400 Stall Converter, BandM's Shift Kit, "Beast" Sunshell, and 9 Pack Cluch Packs. Stock is 6. One of my next mod's is going to be the Corvette Servo also. If I end up building up a 383 stroker, I'll be looking at getting Yank's 2700 Stall Converter

    1995 Chevy Tahoe

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