2005 lq9 to lt1 4l60e HELP!

[dyrt]

Howdy folks,

Long story short, i bought a complete lq9 with a howell harness that is wired/programmed for manual or non electronic trans. I changed my mind and want to use the lt1 4l60e i had originally modded for my lt1 swap into my 86 regal before i swapped to t56. here are my questions.

1) What is the deal with the spacer for torque converter? I have a dished flexplate. Do i need the spacer or not to bolt to this GEN 2 small block trans? I know i need to file the flexplate bolt holes out to mate to the torque converter.

2)do the gen 2 and gen 3 4l60e transmissions share the same connectors? That is, if i scalp a connector for computer control off of and lt1 harness or a gen3 harness are they the same? Besides the modular bell, are the 4l60/65/70 all electronically compatible?

My plan is to score a connector for the trans control and wire up a pigtail to run to the harness since i don't want to spend more money on this swap and i have all the tools to do it. I will need the get the pcm reprogrammed, but the vortec computer should control the last generation 4l60e just the same right?

Thanks!

Mike

[PANCHOLT1]

you need the spacer, it an aluminum piece from GM. Its used on 6.0s that use the 4L80E.. Just bolt that infront of your flexplate if its curved. And you must file the bolt holes as well.. The connectors are the same, and the LT1 tranny is compatible as long as it 95+

[dyrt]

Thanks for the response. By "in front" do you mean between the flexplate and torque converter or between the crank and flexplate? That is the question i should have asked, i assumed that if the flexplate is dished then the gear teeth are in the right location for engaging the starter but the boss that accepts the snout of the TC is just too far in. Is my logic right there?

[PANCHOLT1]

yes, the spacer in between the flexplate and converter