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4.3L to 6.2L swap????

19K views 17 replies 11 participants last post by  PaleRider  
#1 ·
I have the rare opportunity to buy the entire drive train, including computer, for the 6.2, out of a 2013 silverado. What would it take to do a motor swap into a 2013 Silverado SWB WT with the 4.3? Wouldnt mind any kind of crtisism or advice. Just wanna do something different for a change. :twisted: :twisted:
 
#2 ·
That would be sweet.... especially if you have all the parts.... I wonder about the Body computer ?

I have a SWB Sierra with 5.3 A 6.2 would be awesome
 
#3 ·
Especially in a small truck like mine :twisted: its already lowered, but with the truck sitting in a slightly different weight class, it would be quick, and good for pulling!
 
#4 ·
I can't give you everything, but I can tell you you'd need. New harnesses, motor mounts, flywheel, parts connecting to the transmission. You might have better luck looking up swapping to a 5.3 because a 5.3 and 6.2 are the same motor, the 6.2 just has a few different internals, so all the procedures would be same to swap a 6.2 into it as would a 5.3. If you could pull it all off though that truck would be absolutely sick.
 
#6 ·
i wont have no problem with that. imma have someone build me a F**d 9inch rear end
 
#8 ·
I know...but im getting pretty damn cheap though. Would love to have a 14 bolt, but the cheapest i found was near $800
 
#9 ·
I;ve thought about this but i've found it impossible to find a salvage 6.2
 
#12 ·
yep, still thinking of rebuilding the engine slowly while i still mod my truck.
 
#13 ·
This thread is a little old, but I did this exact swap into my 08 sierra rcsb. I didnt have to change much. Same motor mounts. Changed the body control module, the harness came with the motor. I had to change the radiator and heater hoses, as well as the ignition key sensor. And that was about it. Any questions, ask away.

By the way, **** is this truck fast.
 

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#14 ·
Nice!!! I wish I had a 6.2 in my truck.
 
#17 ·
This nine year old thread is about a completely different generation truck than yours, so starting your own thread might have made more sense.

With enough time, knowledge and especially money a lot of things can be made to happen. Whether it makes sense is a whole another story. Fitting one in is probably not a problem, it's the task of making things work on the electrical side that is the potentially monumental task. Electronics are different, transmission is different and so on.

Cost? First check how much would the engine, transmission, wiring harness and ECU cost. Then add copious amounts of labor on top. And then add another 50% just in case.