A few questions

[93ecss]

Hi guys im new here and have a few questions. I have a 1993 chevy k1500 that im dieing to do a swap with a 5.3. now i have a 4l60e which has a 12pin connector? correct? can i use a nelson harness to control it with a pcm out of a new vehical with the 5.3 or do i need to use my old computer? also is there headers for the 4wd obs trucks with the swap?
thank you

[flattopwill]

Im pretty sure you can use your tranny with the new computer but may involve some harness modification.
And no, there isnt a company that makes conversion headers for the 4wds. Atleast not that I know of. It has been verified that the Schoenfeld conversion headers will not work on a 4wd.

[93ecss]

ok thank you very much. i planned on getting a harness from nelson so he can proabably deal with that. and so the 4wd conversion guys are just using manifolds?

[flattopwill]

Far as i know. There might be some shorties thatll work?

[93ecss]

ok thank you! ill do a little more snooping around.

[beertestr]

ok thank you! ill do a little more snooping around.

The stock manifolds flow pretty decent for a stock motor, they are the same casting up through the 6.2L's that are making 400+ HP. . Why not try to get the motor up and running on them? They fit on my 93, I even had the 2004 y-pipe tucked up in there with a little clearancing on the left pipe to clear the frame. On my latest swap, the engine is sitting about 30mm further back, so making takedowns that clear the frame shouldn't be an issue.

[93ecss]

The stock manifolds flow pretty decent for a stock motor, they are the same casting up through the 6.2L's that are making 400+ HP. . Why not try to get the motor up and running on them? They fit on my 93, I even had the 2004 y-pipe tucked up in there with a little clearancing on the left pipe to clear the frame. On my latest swap, the engine is sitting about 30mm further back, so making takedowns that clear the frame shouldn't be an issue.

alright sweet! do you have a build theard? or any pictures of your swap?

[beertestr]

alright sweet! do you have a build theard? or any pictures of your swap?

yup thread is HERE

[93ecss]

thanks man!

[Z-Rod]

Hey 93 ecss,

Here is my 2cents worth... Nelson did my harness for the stock 4L60E in my '94 Z-71. there is a lot of info out there saying the 1996 and older trannys won't work with the LS computers. My guess is that the first attempts at these conversions involved different LS computers than the ones we are seeing now. My computer is from a 2005 Silverado and Nelson did the harness and tune. Don't skip out on getting the tune... big bank for the buck.

Also, make sure you get the 1" offset motor adapters. These actually place the engine in the same spot as the old engine. Your transmission won't have to move 1 mm. My truck is really fast with the new engine. I can't believe the difference the tune makes.

Good luck,

Brian