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2014 5.3 to 6.2 engine swap

07Softail

By 07Softail
in Engines & Drivetrain

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07Softail Senior Enthusiast

07Softail

Posted
Posted

What if any issues would be involved in this swap as far as ECM's go... I can get a 2014 6.2 and Trans with 52xx miles on the clock and the (ECM) which is almost the miles I have on my 5.3 for cheap.. REAL CHEAP!!

I have driven the truck with the roof cut off (Total Loss) and it has had a RX cc on it since 400 miles so I know it's clean and oil has been changed twice, the truck runs VERY VERY well!

Can I plug and play the ECM and drop the 6.2 in? Will the computer have to go through the learning and cranking process?

It also has the 9.76 axle and has 3.73's which I can get the whole axle assembly for $500 which I am going to get regardless.

I am wanting to do this plus installing a TVS1900 Mag also and can do this well under $8000 including AR Headers. Any engine swap ECM gurus please chime in!

 

RT

RyanbabZ71 Senior Enthusiast

RyanbabZ71

Posted
Posted

Even if you don't put it in your truck it would be a great engine for a project vehicle

 

 

Ryan

fondupot Senior Enthusiast

fondupot

Posted
Posted

I would imagine everything should be able to swap right over. Should be pretty damn close to plug n play!

 

You will have a badass ride then!

FishinJ Enthusiast

FishinJ

Posted
Posted

I would think you would just swap it out and then you'll need a tune. You will have to change a few things like exhaust (diff size) and maybe other things like that. Since you'll have the motor out out you might as well put some headers on it.

moosehead1 Enthusiast

moosehead1

Posted
Posted

I was prepared to ask why not just buy a new truck, but with the entry point, sounds like you should do this! I would think you could either reprogram your ECM, or just replace it, no? FWIW, the engine bay has quite a bit of room to work even with the 6.2L planted in it.

fondupot Senior Enthusiast

fondupot

Posted
Posted

I was prepared to ask why not just buy a new truck, but with the entry point, sounds like you should do this! I would think you could either reprogram your ECM, or just replace it, no? FWIW, the engine bay has quite a bit of room to work even with the 6.2L planted in it.

 

Cant get a 6.2L in the Reg cab tho. That is what OP is after.

07Softail Senior Enthusiast

07Softail

Posted
  • Author
Posted

I just wasn't sure when ECM was swapped that I would have to have the dealership do anything. and yes I will be doing headers and a TVS1900 supercharger also with a BB tune and the 3.73's.

 

RT

jrob56 Enthusiast

jrob56

Posted
Posted

Immediate thoughts are the converter and tuning as differences but with the trans and engine you got that covered. Curious if converter is different, assume it would be.

 

As far as the ECM, not sure if it is easier to have a custom tuner just flash yours or to swap ECM. Very curious about this though. If you do it, start a build thread.

07Softail Senior Enthusiast

07Softail

Posted
  • Author
Posted

Oh I definitely will. Leaning towards getting the Engine,trans, for a project anyway and $3000 for everything seems alittle hard to pass up and the 9.76 w/3.73's will be going into my truck regardless.

 

RT

jrob56 Enthusiast

jrob56

Posted
Posted

Yeah that seems like a steal. Gonna have a truck that moves even without a blower.

TJay74 Senior Enthusiast

TJay74

Posted
Posted

I would just have the tune in your ECM updated, the ECM/TCM/BCM are all married together to some degree now. You will have a lot less head aches if you just put your transmission behind the new engine and use your ECM and have someone flash your stock ECM with the 6.2L engine tune. Otherwise the ECM/TCM from the 6.2l is going to have the VIN in them from the donor vehicle and I am not sure if anyone has the ability to change that info yet.

07Softail Senior Enthusiast

07Softail

Posted
  • Author
Posted

I would just have the tune in your ECM updated, the ECM/TCM/BCM are all married together to some degree now. You will have a lot less head aches if you just put your transmission behind the new engine and use your ECM and have someone flash your stock ECM with the 6.2L engine tune. Otherwise the ECM/TCM from the 6.2l is going to have the VIN in them from the donor vehicle and I am not sure if anyone has the ability to change that info yet.

Thanks that is what I was thinking but wasn't sure about the VIN# issue. If I am splitting engine and trans I might as well go with a little more converter also. Geez does this ever end? LMFAO!!!

 

RT

Carl T Enthusiast

Carl T

Posted
Posted

That is a crazy deal for a 6.2, does it include the trans as well? For the ECU, both trucks run the same E92 ECU with different calibrations. As others have mentioned you would want to reuse your original computer and have it setup for the 6.2. Should be a very simple swap.

foo.c Enthusiast

foo.c

Posted
Posted

When I was looking for an LS to swap into my Jeep the old 6.2 and trans with low miles like that was over $10k.

 

$3k seems like a steal. You almost have to buy it just to find something to put it in. :)

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