4L60E to 4L80E swap

[hquick]

Hi guys,
been donkeys since I was here last.
Went to the States in July. One week after my return I blew up the 60E.
Decided to do the swap to the 80E...apparently no one has done this before in the OBS 4x4 5.7L Suburban.
Anyway...imported a trany from PA and rebuilt it...just for the hell of it...and the experience
Now I'm having a look at my tune and I'm wondering how I go about making the changes.
Do I just copy ever table from a tune of a vehicle with an 80E?
I looked in Holden Crazy and couldn't find anything running a 411 PCM and 5.7L with 4L80E.
Lextech sent me a copy of his TT truck tune and I just copied and pasted every table accross..is that right? He's using COS5 and I'm using COS3.

[Doc]

You need to do the tranny segment swap. There is a 02 Silveado 6.0l that has the 80e on HoldenCrazy.

[kbracing96]

It doesn't matter what the motor is in the tune you find, it just needs to have the 80 and be the same operating system#. Then just do a trans segment swap and you should be good.

[350SS]

Hey Howard,

You also have to move around a couple of pcm pins that go to the Big trans connector...Lextech probably already gave you that info, but if not let me know and I'll send you the schematics.

[hquick]

Thanks guys...yeah I have the wiring diagrams and that's easy enough.
I was more concerned with the tune side of it.
As I'm running Cos3, how do I do it?

[350SS]

Are you using COS3 for an '01 or '02 PCM?

[hquick]

COS3 for the 99+ with the 2001 Express van base.
I just made the segment swap using the file for the Silverado as Doc suggested.
Seemed to work fine.
Can someone please check this for me?

Thanks

Howard

[kbracing96]

The real test will be when you flash it in, if the truck runs and drives :lol:

[hquick]

Why has the boost VE table gpone to all 500 since the segment swap?

[350SS]

That's weird, you should do a comparision with your old file and make sure all the engine parameters are where they should be. Sounds like it worked for the most part.