4L80E Question (I'm confused)

[Kenny78]

I am looking to put a 4L80E in my 82 K20. This morning I found a 91 3/4 ton van with a toasted 4L80E. I originally thought that 91 (gas) was only year for the standalone controller (I know 91 to 93 diesels have them).

So I double checked on the internet to make sure before I leave to go buy and am coming up with mixed answers on 91 (gas) 4L80E standalone controller.

Does anybody have any input?

Thanks

Kenny

 

[Captainfab]

I don't have an answer about the factory standalone controller, but I thought I'd let you know that you can build your own trans controller for a lot less than the aftermarket controllers. You will need a 16197427 PCM from a '94-'95 truck, a TPS, and a few other things I can't remember ATM. I haven't built one yet, I just heard how to do it a few months ago. Here's a couple links that explain it better than I can.....

http://www.thirdgen.org/techboard/diy-prom/266357-pcm-control-4l60e-induction.html

http://mattw.dyndns.org/4L80E/

There's another thread on http://www.67-72chevytrucks.com/vboard but I can't find it right now. I'll find it tonight and post it here.

 

[imiceman44]

I don't have an answer about the factory standalone controller, but I thought I'd let you know that you can build your own trans controller for a lot less than the aftermarket controllers. You will need a 16197427 PCM from a '94-'95 truck, a TPS, and a few other things I can't remember ATM. I haven't built one yet, I just heard how to do it a few months ago. Here's a couple links that explain it better than I can.....

http://www.thirdgen.org/techboard/diy-prom/266357-pcm-control-4l60e-induction.html

http://mattw.dyndns.org/4L80E/

There's another thread on http://www.67-72chevytrucks.com/vboard but I can't find it right now. I'll find it tonight and post it here.

Thanks for the info.

 

[Kenny78]

Hey Captainfab, thanks for the links but I dont have an ecm to pigyback off of. I dont know how I came up with the standalone gas controller, guess Im just absorbing too much info LOL

 

[4X4HIGH]

Yes 1991 gas was the only year for a 4L80E with a stand alone controller. I have a friend with a 1991 burb with this set-up factory.

 

[Captainfab]

Here's the other thread i was talking about. It started out as a thread about Patriot heads, but got hijacked. Not a lot of info there, but a little.

http://www.67-72chevytrucks.com/vboard/showthread.php?t=403384

 

[Kenny78]

Thanks for your input. I passed on the harness and I went ahead and ordered a Baumann Optishift (I got in on a group buy).

I am still interested in this topic though. The 2wd and 4wd are different, being the 2wd has 2 plugs and the 4wd has 3 plugs (I think). So it would have needed some modification.

Hey 4x4 High, is your friends Suburban a 454? Because after atleast 6 hours of research today, all of the different forum posts with a 350/4L80E have been integrated controllers.

Thanks again

Kenny

 

[4X4HIGH]

My buddy's is a 350/4L80E

 

[Captainfab]

That's cool, Let us know how you like the Baumann Optishift.

Thanks for your input. I passed on the harness and I went ahead and ordered a Baumann Optishift (I got in on a group buy).

I am still interested in this topic though. The 2wd and 4wd are different, being the 2wd has 2 plugs and the 4wd has 3 plugs (I think). So it would have needed some modification.

Hey 4x4 High, is your friends Suburban a 454? Because after atleast 6 hours of research today, all of the different forum posts with a 350/4L80E have been integrated controllers.

Thanks again

Kenny

 

[Kenny78]

It will be here in 2 to 3 weeks and I have a line on a 4L80E so its going to be about a month (it all goes well).
My wife is really excited about being able to drive 65-70 mph without spinning 3200 RPM.

Kenny