is it possible to swap the 99 4 cyl 2.2 liter 5sfe engine with a 99 6 cyl 3.0 liter 1mzfe camry engine? Is there enough clearance and compatability or will the engine bay need to be modified? If so, what kind of modifications would have to be made? Thanks.

 

The V6 was an option on this car, it should be a matter of swapping parts.

Engine, trans, axles, radiator, computer, wiring harness issues, the front spings are stiffer, disk brakes larger, etc.

If going this route suggest you find an accident totaled Camry with V6 otherwise parts cost will add up plus you will have those small parts you didn't grab.

 

Im thinking that with the cost of the engine and trans, I could buy a whole 99 v6 camry, but then again, it would have some mileage on it.

 

Actually, according to the Haynes manual, both engines use the same 4 speed AT, but have indipendent drive axles. So instead of $2000 for a transmission, it would be $90 for a drive axle set. Your thoughts Toyomoho?

 

The 4 cylinder uses an A140E trans, the V6 an A540E.

You will need the larger V6 trans with the V6 engine.

Find a wrecked Camry with V6 option. The Avalon is an upscaled Camry. Even a few models of the Lexus use the Camry body, engine and trans.

 

Cool, thanks Toyomoho!

 

I'm considering doing this swap as well. I have a 99 with the 3.0 that was totaled in a rear end collision. I can pick up another 99 that's the shell of a 4cyl car. I basically just need a good rear half, as I have everything forward of that in excellent condition. This 4 cyl car is the same color, so no painting will be required. I know that everything under the hood will have to be swapped out, including the wiring harness. I have asked around, and someone has told me that portions of the dash wiring harness has to be swapped out to, and I'm wondering if this is the case. I can take whatever I need from the wrecked car, but not sure if it's going to be a bigger project that I can handle.

 

The basic car is the same. The engines/trans/wiring were installed to meet the build requirements of the buyer.

The two engines have differences that include dash wiring.

Do the the cars the same trans type (auto or stick)? Same emissions type (California or Federal), the same options such as ABS? If not this is more wiring differences.

I suggest you place both cars next to each other and along with a wiring diagram start noting the differences.

You may need to remove the dash board to access the wiring, plus swap out the fuse/relay boxes and wiring on the drivers side.

Given the wiring was installed during the build, it should be able to be removed and swapped.

Suggest taking pictures of every thing before you remove it as a reference and marking all wiring and items that you disconnect. Plus vacuum hose connections, etc.

I am sure you can do the job as it has been done before. It may take some time and do make sure you mark, note, take pictures of everything as it is easy to forget or become confused what goes where.

 

Actually ran into this thread researching a swap in opposite direction! I have a 1996 Avalon with 3.0 V6 engine. I want to swap into the smaller 2.4 V4 engine. Now I would prefer to keep the transmission as is, and possibly the ECM module. Is there a specific Toyota engine that would work with the original avalon transmission? Any recommendations would be helpful…

 

The same goes for a V-6 to 4 cylinder swap. Different trans, ECM, axles, hubs, radiator, etc. As suggested and as done if your going this route find a donor 4 cylinder car for parts. The 4 cylinder trans should bolt up to the V6 but the gearing would be wrong. Not sure about the axle lengths.

The Avalon should be the same as the Camry for that year but jazzed up a little and having the standard V-6.