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4.3 votec to 5.3 l83


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Posted

I have a 2009 gmc sierra with the 4.3 vortec. I am wondering if it is to much work to swap in tye gen v l83 and the 8l90 transmission. I would like to know what other things I would need to complete the project.

Posted

Yeah, that will be a ton of work.


You need basically everything unless you want to purchase a stand alone harness/computer for this.

 

I'm talking the engine/transmission, wire harness, computers, dash/cluster, bcm etc etc just to make it all work and so you can have gauges and other functions. None of the L83 stuff will talk with the wiring in your early truck so it's not exactly a project that is popular.

 

You'd have a better chance at finding a 5.3 with a 6L80e from a 2009-2013 truck and swapping all that stuff over.

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