How compatible are the engines between the GX470 and Prado120? (1 Viewer)

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Mar 31, 2025
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Western Australia
Simple question. How easy or hard would it be to put the 4.7 V8 from a GX470 into a Prado120? Cause its something I'm looking to do with my car. This car has immense personal value to me and I'm wanting to make it more exciting and special.
 
I'm not sure if anyone has done this before. I think you would need access to a USDM GX470, including the wiring harness, various ECU/Canbus systems, and applicable engine/transmission components. Wrecked USDM GX470s are not hard to find in the salvage yards here in the US. I would also presume that you'll need to lengthen/shorten various harnesses due to one vehicle being LHD and one being RHD, as well as verify that the RHD steering column/shafts do not interfere with the 2UZ-FE. There could also be another fatal flaw that I'm not aware of - due to USDM/ADM vehicle nuance of the LHD/RHD issues.

If I were going to do this swap I would personally want to have a complete, wrecked or rusty, and running GX470 on hand. Then you would have every part on both vehicles and could have the best chance of getting it to work. I am presuming (yet again) that getting complete GX470 in Australia might be hard or expensive, in which case you'd need to source parts piecemeal from the USA and spend a lot of time looking at factory service manuals to figure things out.
 
To the OP, what engine is currently in the Prado?

I'm not sure if anyone has done this before. I think you would need access to a USDM GX470, including the wiring harness, various ECU/Canbus systems, and applicable engine/transmission components. Wrecked USDM GX470s are not hard to find in the salvage yards here in the US. I would also presume that you'll need to lengthen/shorten various harnesses due to one vehicle being LHD and one being RHD, as well as verify that the RHD steering column/shafts do not interfere with the 2UZ-FE. There could also be another fatal flaw that I'm not aware of - due to USDM/ADM vehicle nuance of the LHD/RHD issues.
^ 100% all of this. It's going to be quite an undertaking due to something as "simple" as the steering wheel position.
 
I'm not sure if anyone has done this before. I think you would need access to a USDM GX470, including the wiring harness, various ECU/Canbus systems, and applicable engine/transmission components. Wrecked USDM GX470s are not hard to find in the salvage yards here in the US. I would also presume that you'll need to lengthen/shorten various harnesses due to one vehicle being LHD and one being RHD, as well as verify that the RHD steering column/shafts do not interfere with the 2UZ-FE. There could also be another fatal flaw that I'm not aware of - due to USDM/ADM vehicle nuance of the LHD/RHD issues.

If I were going to do this swap I would personally want to have a complete, wrecked or rusty, and running GX470 on hand. Then you would have every part on both vehicles and could have the best chance of getting it to work. I am presuming (yet again) that getting complete GX470 in Australia might be hard or expensive, in which case you'd need to source parts piecemeal from the USA and spend a lot of time looking at factory service manuals to figure things out.
Thank you. That's really helpful.
With all that being the case I might look elsewhere. You got any ideas of what could fit easier?
Mine is the V6 version BTW
 
Thank you. That's really helpful.
With all that being the case I might look elsewhere. You got any ideas of what could fit easier?
Mine is the V6 version BTW
Probably not a whole lot :). Since it's a CANBUS system, it's pretty challenging to deal with. You're probably limited (within reason) to the engines and transmissions that came in the 120/GX470 platform.

Are supercharges for the 4.0V6 and option down there? Magnuson makes them in the US for the 1GR in the similar-gen Tacoma/4Runner. Maybe you also have a local option. I'd love an Elate supercharger from your hemisphere for my 4.7 V8.
 
Probably not a whole lot :). Since it's a CANBUS system, it's pretty challenging to deal with. You're probably limited (within reason) to the engines and transmissions that came in the 120/GX470 platform.

Are supercharges for the 4.0V6 and option down there? Magnuson makes them in the US for the 1GR in the similar-gen Tacoma/4Runner. Maybe you also have a local option. I'd love an Elate supercharger from your hemisphere for my 4.7 V8.
Well that's the tricky part. The one I know about from Bullet is for the duel VVT-I version, not the OG single VVT-I like I have. I wonder if I can upgrade the engine to the duel VVT-I version?
 
Probably not a whole lot :). Since it's a CANBUS system, it's pretty challenging to deal with. You're probably limited (within reason) to the engines and transmissions that came in the 120/GX470 platform.

Are supercharges for the 4.0V6 and option down there? Magnuson makes them in the US for the 1GR in the similar-gen Tacoma/4Runner. Maybe you also have a local option. I'd love an Elate supercharger from your hemisphere for my 4.7 V8.
I do have one advantage here though. I don't need to be reasonable at all when it comes to costs with this car lmfao.
I literally grew up with this car. My dad bought it brand new back in 2003 when I was 7. So since I'm never selling it no matter what. Cause.... how could you sell something that special? I'm free to be completely unreasonable lmao.
 
The chassis transmission cross member is at different locations. Need to move it back. Driveshaft length are not the same between the 4.0 V6 and 4.7 V8. Not sure about diesel powered. Need to compare part number of driveshaft.
 

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