I bought a 5.3l from an 02 silverado with PCM and harness and needed some help on what else i would need to swap it into my 06 silverado 4.3l

 

https://www.performancetrucks.net/fo...-guide-378643/

 

the above thread pretty much sums it up. I just completed my swap. Truck is a 4.3 to 5.3 swap that is running and daily driving. If you any questions, feel free to pm me or email me slvrram at yahoo.com.

stan

 

I just did this exact swap, the thread really doesn't help much for what our swap consists of, feel free to PM me with any questions.

You will need to convert to DBW, get 03-04 wiring harness, any v8 passenger mount, 2wd v8 driver mount, 03-04 oil pressure sensor, 03-04 AC compressor, unless you want to splice the 02 pigtail onto the 03-04 harness. More stuff than this, just contact me.

 

Im about to tackle this. I read about the fuel lines. I hate dealing with wiring and fuel systems. Is it that big of a deal? Im pretty decent in the shop, done a cam swap and stuff like that.

 

i change mine to return style , should be easy