Question: Do I have this right?

Car RamRod

Car RamRod

Right Meow!
Apr 12, 2009
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Just west of Mobile, AL
Yes I did search...

I'm finally getting around to swapping the LBZ into my 03. My 03 is a 4wd and the doner truck is a 2WD. I've read on here about swapping the VB, NSBU and harness from a 6speed into a 5speed and it becomes a 6speed. Is that right? I'm trying to decide the best route to go here.

Make the 4wd 5speed into a 6speed

or

Make the 2WD 6speed into a 4WD


I'm also looking for a good deal on a 6speed 4WD....
 
JoshH

JoshH

Daggum farm truck
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Feb 14, 2007
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Just swap the tail housing with the output shaft from the 5 speed onto the 6 speed.
 
DAVe3283

DAVe3283

Heavy & Slow
Sep 3, 2009
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Boise, ID, USA
That being the case, you could probably swap the valve body, but I don't know what (if anything) is done to the 6-speed valve body during a SunCoast upgrade. You'd probably have to get that done before swapping it in, or you'd be taking a step backwards. Mike will know for sure.

IIRC Mike also said a built 6-speed is stronger than a built 5-speed, so you might want to look into some way of swapping your kit parts into the 6-speed, then getting the rest of the parts/work (if any) to finish it off. Just a thought.
 
J

jc1843

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Sep 27, 2009
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So Calf
I suggest you call Mike L and discuss the swap-- the two operating systems are completely different-- I think you are going to need a lot of help to make this work!

I think it would be easier to use the 6 speed, with the LBZ, and the LBZ computers and harness.
 
Mike L.

Mike L.

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Aug 12, 2006
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Yes you can use the 6 speed valve body with harness and mode switch and make a 5 speed into a 6 speed if you use an LBZ ECM and TCM with harness. I would rather use the 6 speed trans and sell the SC.
 
G

gtmax

New member
Apr 9, 2008
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Mike L. said:
Yes you can use the 6 speed valve body with harness and mode switch and make a 5 speed into a 6 speed if you use an LBZ ECM and TCM with harness. I would rather use the 6 speed trans and sell the SC.
Click to expand...

If you're gonna try the 6 speed VB on 5 speed trans also--MAKE SURE you get an 06 selector shaft (PN 29542696) in order to make the internal mode switch work.
 
C

Cougar281

Well-known member
Sep 11, 2006
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St Louis, MO
Car RamRod said:
You're killing me Mike. I mean it there a differnce between the 2wd and 4wd on the TCM program.
Click to expand...

Mike may have been referring to 5speed vs 6speed programming, which of course is WAAAY different. 2wd vs 4wd I don't THINK is different, but if you're concerned, I could flash a 4wd cal into it if you'd like.
 
Car RamRod

Car RamRod

Right Meow!
Apr 12, 2009
231
0
0
Just west of Mobile, AL
Hell I don't know. I've owned this truck eight years now and drove it 422K so far and have yet to use 4lo, so it real doesn't matter that much. At some point I'll get I flashed.
 
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