you also have to modify the tranny X member for the 80e
Jimmiee, could a PCM that was designed for a small-block chevy and 4L60E be flashed to run a small-block chevy and 4L80E? It seems that that motor/tranny combo had to somehow be possible considering most 1-ton duallys of the 90s bodystyle should have shipped in that combo? I don't know if the PCMs are physically the same with a different flash or not? I don't know enough about PCMs. :gasp:
TYMBOM, We all would like to learn from your conversion. Do you know who reprogrammed your PCM? Did you do the work on your truck or did someone else do it? What kind of harness was used to make the conversion? Do you have any pictures of the conversion? Thanks!
Shortened rear drive shaft
Longer front driveshaft
different flywheel and spacer
The wire harness/jumper to make it work with stock ECU ******
Different cross member
Different inspection cover
Different mounting bolts and tailshaft if it was a half ton
A new program in the stock ECU to make it all work great
Here is a link to a site that offers the conversion kit, all that's need after that is a program
Anyone with tuning software can do the tune if they know what they are doing. The EFI Live programmer is supposed to be an easy one to do it on and my friend got his programmed from this company.
See, no need to hate or for drama 2tone04, I'm not crazy :glasses:
Looking at that site you linked to, all I see are conversions for LS1 motors to get 4L80E trans put behind them. You have a LS1 motor in your truck? I'm just curious if the computers beween LS1 and normal motors are the same. Neat conversion, especially with the conversion harness seeming so simple.
I just spent some time reading up on the swap over at HP Tuners. The way it works is the first thing you have to do is get your PCM programmed to a 4L80E with a Tech II scanner. Once you have done that you send them the bin file and they redo it for you. This is what changes the shift stratigy and solenoid firing orders. Then you have to get a 4L80 harness and rewire the PCM as like I mentioned in an earlier post all the wires are different from a 60 to an 80. Good reading HERE