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Hey guys,
I just bought an LQ4/6.0 out of a 2006 Denali XL
Complete Long Block
Engine Harness /w ECU

The swap will be going into a 2007 Reg Cab Silverado.
Truck came factory with the 4.8L Vortec.

My questions go as follows.
1. Would the swap work easier since I have the ECU/ECM that came with it ?
2. 06' Below uses 24x Crank Sens... 07+ 58x Crank Sens... Could it work since i have the ECU/Harness ?
3. Would the truck still start up/drive without unlocking the ECU ?
4. What other things should i be worried about ? 
5. What things should I get for the swap if needed ?


I will be using a JEGS adapter/4.8 Flexplate to mount the 4l60e to it "4l80 will be put in later"

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1. Not really. You will still require the fuse block and all that to make that all function. I can't remember if if it was swapping the newer engines into the older body style trucks or the older engines into the newer body style trucks but it was on youtube and they used some fancy adapter harness and other things to make it work.


3. Nope, if you used the other computer and harness the computer must be tuned first. And mostly if not all your gauges and features of your truck will never work again, like AC, fans etc etc.



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