'01 4.3 to '04 5.3

[ShagNasty]

Ok so I found a 2004 5.3L engine complete with accessories, wiring harness, and PCM. My truck is a 2001 4.3L.

What will need to be done as far as the anti-theft part of the PCM? I"ve read in a couple of threads that the newer models have anti-theft that needs to be flashed "out" of the PCM.

Will this be an issue putting a '04 motor with anti-theft into a '01 truck with no anti-theft?

Will the wiring harness from the '04 mate up with my '01 truck?

Thanks in advance for any help you guys can give me.

[ridnlow]

You will have to get Vats disabled in the tune..

[airdeano]

thats the minimum of your worries...
heres what you may have to consider:
2004 system was fly-by-wire (so the 04 harness and computer are
useless if you are looking to a straight across swap)
so youll need either a 1999-2002 v8 harness (non fly-by-wire) or
a stand-alone harness.
if you use an OE harness youll have to repin your chassis/computer/
fusebox outputs.
fuel lines will need to be adapted or replaced for the v8 options.
and yes tuning for VATS, speedo, and non-emissions compliance

airdeano

[ShagNasty]

<div class='quotetop'>QUOTE(airdeano &#064; Apr 25 2007, 09&#58;50 PM) [snapback]91397[/snapback]</div>

thats the minimum of your worries...
heres what you may have to consider:
2004 system was fly-by-wire (so the 04 harness and computer are
useless if you are looking to a straight across swap)
so youll need either a 1999-2002 v8 harness (non fly-by-wire) or
a stand-alone harness.
if you use an OE harness youll have to repin your chassis/computer/
fusebox outputs.
fuel lines will need to be adapted or replaced for the v8 options.
and yes tuning for VATS, speedo, and non-emissions compliance

airdeano
[/b]

Thank you that was exactly the information I was looking for. I remember reading that somehwere but it was lodged in the back of my brain because I have been researching this for a long time. Looks like I need to keep looking for a 99-02 complete pull out. This guy only wants &#036;700 for the complete &#39;04 and it only has 24k miles on it. Maybe I should just get it because of the price and find a harness.

Either way, thank you for the information. You possibly just saved me a lot of trouble.

[1BADC10]

Why not buy it, and swap the TB for a cable-driven one? As far as wiring, what&#39;s wrong with custom harness? NP can hook that up for ya... not to mention a PCM tuned for a cable-driven powertrain.

Is this not do-able? Am I thinking wishfully? I&#39;ve heard of people on PT swapping DBW TBs for cable-driven ones w/o issues. What&#39;s so different here?

[SBTork]

if all he wants is &#036;700, i&#39;d like to speak with him, thats almost too good of a deal to pass up