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Official NBS V6 to GENIII V8 swap Guide

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Old Apr 28, 2020 | 08:31 AM
  #391  
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Okay, so then will a 99-02 wiring harness work with the 05 engine? Will I need an intoaje or just the throttle body?
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Old Apr 28, 2020 | 11:03 AM
  #392  
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I have a quick question for clarification, I have a 2000 2wd v6, from my understanding the passenger mount will work fine. The driver side I’m looking at buying 15113848 correct? This is the mount for a 2wd frame. I’m only confused because the engine is coming out of a 4x4 pickup, so I’m assuming the engine mount is the same and I just need the 2wd frame side mount?
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Old Apr 28, 2020 | 11:05 AM
  #393  
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Originally Posted by RedXray
The Express Vans engine harness will work perfect with that setup as both are DBC and the 4L80 transmission connectors are on that van harness.
Would it plug right into my v6 pcm or would I have to repin some things? I'm open to grabbing a standalone or grabbing the v8 pcm. Thanks just starting to learn about the wiring side.
thanks
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Old Apr 28, 2020 | 05:26 PM
  #394  
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Originally Posted by KevinD1985
Would it plug right into my v6 pcm or would I have to repin some things? I'm open to grabbing a standalone or grabbing the v8 pcm. Thanks just starting to learn about the wiring side.
thanks
Yes it will plug right into the 2005 V6 PCM if it's not the "black box" PCM. If I remember correctly only the 99-00 V6's were black box PCM's. You'll need a V8 base tune file installed as it will not run on the V6 tune. If the engine is not heavily modified a mail order tune would get you up and going. Richard (Atomic) a sponsor here can probably fix you up with any level of tune you need.

Atomic Performance

Black Box PCM


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Old Apr 28, 2020 | 05:53 PM
  #395  
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Here the pcm thats in the truck right now with the v6




Originally Posted by RedXray
Yes it will plug right into the 2005 V6 PCM if it's not the "black box" PCM. If I remember correctly only the 99-00 V6's were black box PCM's. You'll need a V8 base tune file installed as it will not run on the V6 tune. If the engine is not heavily modified a mail order tune would get you up and going. Richard (Atomic) a sponsor here can probably fix you up with any level of tune you need.

Atomic Performance

Black Box PCM

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Old Apr 28, 2020 | 09:18 PM
  #396  
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yeah, that silver PCM works with Gen3 engines.
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Old Apr 28, 2020 | 10:45 PM
  #397  
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Originally Posted by KevinD1985
Here the pcm thats in the truck right now with the v6
That's the 1 megabyte P59 PCM and will work with your trucks v8 swap and also with the Express van's engine harness. It needs to be flashed to a V8 tune. I have read that if the operating systems (v6 to v8) match it still takes 4 credits ($50 each). If you can get your hands on that vans V8 PCM it may be cheaper and easier. The Dealership may be able to flash the V6's PCM to a V8. Someone with more knowledge with segment swaps could tell you more. HP Tuners forum would be the best place to ask.
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Old May 1, 2020 | 09:50 PM
  #398  
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Default I got a 2002 5.3 harness and ecm

I got a 2002 5.3 engine, harness and computer, put it all in had to use v6 fuse box. but my problem is the c152 connector does not match the the 04 connector that runs down the frame

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Old May 1, 2020 | 09:55 PM
  #399  
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Originally Posted by Chris Williams
I got a 2002 5.3 engine, harness and computer, put it all in had to use v6 fuse box. but my problem is the c152 connector does not match the the 04 connector that runs down the frame
An 03+ harness is the correct harness for your swap. It's different than the 99-02 harnesses. If changing to the 03+ harness you'll also need to swap the 2002 engine's oil pressure sensor as the connector changed in 03+.
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Old May 1, 2020 | 09:57 PM
  #400  
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Originally Posted by RedXray
An 03+ harness is the correct harness for your swap. It's different than the 99-02 harnesses.
can I just switch connectors and repin it
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