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So, I have an '05 XC90 t6 AWD and the tranny's goin again. Now, the logical thing to do would to ditch the car and get get another volvo. However, I had this strange thought about shoving an LS 3 into the sweet 'ol engine bay of my beloved beast. I kinda would want to keep the AWD because I live in a snowy region and I think it'd be a sweet sleeper. Now, does anyone know if this would be possible? Here are the potential issues:
1) Not enough space
2 LS not compatable with AWD system (Haldex)
3) All the sytems in the volvo go crazy with a new powerplant under the hood
4) Would cost a small fortune


I understand that a lot would have to go into it, but maybe if you guys know anyone that has done it you could send pics.
Alright thanks a lot!
 

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I have no idea if this is possible, but boy do I hope so! :eek:
 

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By the time you're done, you could have bought two V8 XC90's for less.

Anything is possible, but so much fabrication would need to be done.

-Ryan
 

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Well I did see a PT cruiser with a 440 so anything is possible. Is there a good transaxle assembly that will fit to the LS3, but I think the distance across the exhaust manifolds would be too much to put it in that way. Maybe changing out the whole drive line would be easier like out of an AWD Astro van or 4WD pick up.
 

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For a transverse mounted V8 engine, the 60 degree ("V") is key to fit. The LS3 is 90 degrees. The LS4 5.3L engine was designed for transverse mounted front-wheel drive based vehicles with 60 degrees. The engine swaps of RWD Volvos don't help here since those are inline.

The 5.3L, since it is a GM engine uses the same 4spd automatic transmission. Since this thread started because of the same transmission going in the OP's T6, a good upgraded rebuild would have to be completed anyways. On the other hand, there are probably ways to mount the LS4 to the Volvo transmission (change bell housing perhaps) with reduced customization. The engine is rated at 303 hp and 323 ft-lbs of torque. It is a good baseline with relatively lower cost upgrades available. A used LS4 can also be obtained relatively cheap since people normally go for the LS3.

I did an engine swap into a BMW, from another BMW, and been involved in several engine swaps. While engine mounts can be fabricated, understanding the wiring harness and signals is key. Mating the GM engine to the Volvo electronics takes time and research. It is guaranteed not everything will work in a swap like this (example, DSTC).

https://www.onallcylinders.com/2018...-expert-advice-ls4-mods-maximize-performance/ FWD LS4 info
https://www.onallcylinders.com/2018...ormance-bore-stroke-cylinder-heads-cam-specs/ Engine specs
https://shop.tripleedgeperformance.com/Triple-Edge-Performance-4T65E-Complete-Kits_c10.htm An example of upgraded transmission kits, should talk to them with your needs
http://www.gmls4.com/index.php?topic=2554.0 Some discussion for another P2, V70. Good info
https://www.youtube.com/watch?v=qEMYZHRDeiA Good to see the different parts of the LS4
 

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Fifth or sixth time somebody has brought this up, still no takers.
 

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Instead of asking how, I am asking why?

If you must have a "Swedish" LS powered SUV find a Saab 9-7x Aero. Or be boring and find a trailblazer SS
 

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Fifth or sixth time somebody has brought this up, still no takers.
Instead of asking how, I am asking why?

If you must have a "Swedish" LS powered SUV find a Saab 9-7x Aero. Or be boring and find a trailblazer SS
Agreed. A typical transmission rebuild does not equate to: let's do an LS swap. Swapping the same type of engine is difficult enough for the average DIY person. Swapping an LS is not a convenience for a daily driver, it is a project car that can take years to complete and cost more compared to saving up and buying an XC90 V8, welding the angle gear, and making other upgrades.
 
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