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4l60e to 4l80e swap

This is a discussion on 4l60e to 4l80e swap within the Technical / Maintenance forums, part of the General Discussion category; I know this has been discussed 1000 times but I can't find exactly what I need. I want to put ...

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    4l60e to 4l80e swap


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    I know this has been discussed 1000 times but I can't find exactly what I need. I want to put a 4l80e in place of a 4l60e in a 97 K1500 w/305. I know that I have to move the cross member back a bit which is no big deal. I need a stand alone controller of some sort but is it possible that a PCM from a 96/97
    K2500LD w/305 and 4l80e would work? I also need a different flex plate and converter. I was going to use the current transfer case from the 4l60e and switch input shafts if that's possible. It's a NP241C with a 6 bolt flange on the transmission end ,which, from what I understand, will bolt up to the 4l80e. Am I missing anything else here? I was going to buy a used transmission and take my chances on it. What years can I use. From what I've studied I can use one from 93-97 from a gas engine with 97 being the strongest of those choices. Could I use a 4l80e from a diesel. If so can I go right from 93 to 2000 or am I cut off at 97 again? Also wondering if I can use the flex plate from the diesel? I was going back and forth between an 4l80e and a NV4500, but have decided that the 80e would likely be easier and pretty reliable. All I know is I don't want a 4l60e again. Thank you for reading and replying.

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    Registered User likestrucks's Avatar
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    Re: 4l60e to 4l80e swap

    Sub'd
    98 Chevrolet K1500 Z71, 475,000km(295,000 miles)
    56 Chevrolet 3200, 235 I-6, SM420

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    Re: 4l60e to 4l80e swap

    I'm not saying it happening for sure. First the current 4l60e has to die, then I have to find the parts, and then I have to get them installed, and working properly. I've also considered buying a rusty k2500 or K3500 with a 350 and 4l80e and putting that in there with it's computer. Should be nice and easy that way. No custom ****.

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    I am sinner JWolfe75's Avatar
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    Re: 4l60e to 4l80e swap


    Tooned by Lowdown

    '98 'burb DC 6.5" Stage II, RC torsion bars, 7" Alcans, 35" Nitto MG, BB Tune, 0411, Marine, Whipple
    '07 TBSS AWD 3SS
    Quote Originally Posted by BHB View Post
    Ummm...By that, I think that would require sticking my own finger into my "Doug".

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    Registered User TiredFarmer's Avatar
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    Re: 4l60e to 4l80e swap

    Thi is of course assuming the 4L60e will die and not be able to be revived... For the money it would have cost to rebuild an 80 before installing it I got my 60 rebuilt at 160K miles (not all mine.) What do you use the truck for? If not towing a lot the 60 should be just as good, and there are quite a few on here that can tell you how to make the 60 beefier on rebuild. Just sayin, might be cheaper and easier to get a rebuild.
    00 k-1500 ECSB 5.3 4l60e, Z71, 231,500 miles. TRADED 5-2013
    03 2500HD ECSB 6.0 4l80e, 145,000 miles.
    05 K2500HD ECLB 6.6l LLY, 5speed Allison, 270,700 miles (Got 5-2013)

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    Re: 4l60e to 4l80e swap

    This truck isn't used for alot of towing but that is part of life for it. Towing ranges from 3500lb empty(10000lb full) fifth wheel to 15000 lb gravity box. I would rather something that can just take the abuse once and a while and not have to worry about it too much.

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    Registered User TiredFarmer's Avatar
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    Re: 4l60e to 4l80e swap

    Quote Originally Posted by joelvv View Post
    This truck isn't used for alot of towing but that is part of life for it. Towing ranges from 3500lb empty(10000lb full) fifth wheel to 15000 lb gravity box. I would rather something that can just take the abuse once and a while and not have to worry about it too much.
    Ok, in that case you are better off going with a 4l80e.
    00 k-1500 ECSB 5.3 4l60e, Z71, 231,500 miles. TRADED 5-2013
    03 2500HD ECSB 6.0 4l80e, 145,000 miles.
    05 K2500HD ECLB 6.6l LLY, 5speed Allison, 270,700 miles (Got 5-2013)

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    Re: 4l60e to 4l80e swap

    i would go with a rebuild. Im swapping a 4l80e with a 4l60e. I had my 4l60e rebuilt and put in for $1,400. it was in my work/play truck, it got abused and held up great. And now im going to put it in my 3/4 ton.
    I would say get on craigslist and get a used one for the $300 range, if you realy dont use it alot. On top of that you wont have to do all the exstra work for a swap. Trust me anything that can hold up from a 18 year olds abuse, and be used to tow a trailer full of scrap or wood, is impressive. Yeah its not a 4l80, but from my expericance with the 4l60 its a good trans.. Made by GM so you know its going to last=] but i would also agree beefing it up too "tierd farmer"

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