1228747 to 1227477 swap.

[1leg]

Thought i should start a new tread as i'm sure i will have a few question that others might find helpful. After this swap is complete and running properly i will begin the 427 swap.
1989 v-2500 suburban 5.7tbi/TH400 4.11 gears with 1228747

Swapping in a 1227747(asdz) from a 1989 G20 5.7tbi/700r4 2.73 gears.

Plugged in with no wire changes:
Started: OK
Idle Park: good
Idle in gear: OK(could be aftermarket cam)
acceleration: slight stumble on take off
transmission: shifted OK
CEL: NONE
Problem noted:
Transmission kicks down in to low gear at speeds over 30mph. TCC being engaged do to ECU set-up for 700r4
slight stumble win taking off from a stop on low speed.

[1leg]

I opened two TPRT windows to compare a 1988 7747 bin for a 5.7/3 speed auto to a ASDZ bin from this site. I modified the ASDZ bin to the same TCC setting as the same on the 3 speed auto bin.

I have not installed the G2 yet, a little worried about doing it myself. will the above work to fix the kick down/TCC issue.

[EagleMark]

SOunds like you figured out how to do the bin, what are you worried about? Soldering in the G2?

[1leg]

SOunds like you figured out how to do the bin, what are you worried about? Soldering in the G2?

Well i'm hoping it wasn't my solder job that screwed up my 8747.

[1leg]

Did i program this right.
chip programming.JPG

[EagleMark]

Well i'm hoping it wasn't my solder job that screwed up my 8747.

Me too but stuff does happen...

Did i program this right.
chip programming.JPG

Looks right to me. Here's the Moates offset chart.
http://support.moates.net/2010/04/05...using-offsets/