V8/Subie and Automatic tranny suggestions Options

[RacingDreamz]

Sorry to rehash old threads again, but we're about to embark on this project soon, I hope. We're looking at possibly either a, turbo'd 2.0 Type 4, Subaru or SBC v8 and an automatic transmission(for the veterans). My question, what transmission would work. I've read that Auto(fwd or 5000 model) will work. Passat trannys are the same as Boxsters, and Subaru fwd trannys.
Any suggestions or recommendations? We hope to do this over the winter.
We'd appreciate any suggestions to help us finally get this done. Thanks (IMG:style_emoticons/default/smile.gif)

[cali914]

Sorry to rehash old threads again, but we're about to embark on this project soon, I hope. We're looking at possibly either a, turbo'd 2.0 Type 4, Subaru or SBC v8 and an automatic transmission(for the veterans). My question, what transmission would work. I've read that Auto(fwd or 5000 model) will work. Passat trannys are the same as Boxsters, and Subaru fwd trannys.
Any suggestions or recommendations? We hope to do this over the winter.
We'd appreciate any suggestions to help us finally get this done. Thanks (IMG:style_emoticons/default/smile.gif)

. I heard GM makes a auto in one of their front wheel drive v8 cars, I would try and slam the whole shabang engine and tranny mounted transverse in the back of the 914. could be interesting little project. Good Luck

[Chris H.]

Sorry to rehash old threads again, but we're about to embark on this project soon, I hope. We're looking at possibly either a, turbo'd 2.0 Type 4, Subaru or SBC v8 and an automatic transmission(for the veterans). My question, what transmission would work. I've read that Auto(fwd or 5000 model) will work. Passat trannys are the same as Boxsters, and Subaru fwd trannys.
Any suggestions or recommendations? We hope to do this over the winter.
We'd appreciate any suggestions to help us finally get this done. Thanks (IMG:style_emoticons/default/smile.gif)

. I heard GM makes a auto in one of their front wheel drive v8 cars, I would try and slam the whole shabang engine and tranny mounted transverse in the back of the 914. could be interesting little project. Good Luck

That would be a huge undertaking and the whole rear trunk would be sacrificed. Great idea though (not being sarcastic, I WISH that was an easy swap)

For a V8 or Type 4 you can use a Passat or audi FWD auto trans and get an adapter plate for it. Kennedy Engineering Products could make you one. Mueller made or is making one for his Type 4/Audi manual trans car but he may or may not be making more. Check with him and see. He makes good stuff so it would be high quality. No need to go all the way back to Audi 5000. That's too old. I think Mike Bellis was using a 2000 ish Passat trans first (which is actually an Audi trans).

Subie you can find an older front wheel drive trans (pre-1996) and use that. Bolts right up. You might have to beef it up for a turbo application. I would consider an EZ30 6 as well. Or an EG33 if you can find one. Plenty fast.

[Chris914n6]

For an auto trans you want to keep it in the same family. Most logical is the VW/Audi 1.8t, or the 2.0t with the PDK. The v6 is huge and I don't think it would fit without a hammer.
I don't know if the couplers also work for the Subaru autos, but the old 2wd autos were attached to 100hp motors.

[Dave_Darling]

Keep in mind that modern auto trannies are computer controlled by the engine management system, and may require a lot more inputs than you have available in a swap. The old transmissions are the easiest in part because they are pretty self-contained.

Or heck, just find an Olds Toronado drivetrain and call it good?

--DD

[Mike Bellis]

Audi FWD automatic trannies are rare in the US. Much more common in Europe. The Passat version however is very common and basically identical. The Audi and Passat have a TCM (transmission control module) that would need to be incorporated some how but I'm not sure how if used with another engine. The easiest way to do this conversion would be to find a whole car Audi A4 or Passat FWD and use everything from the donor vehicle. You will want the shifter too since it is setup to control the triptronic shifting.

I may do one of these conversions someday. It would be nice to have an automatic for cruising. BTW, and Audi V6 or V8 should bolt right up to this tranny as well...

[Andyrew]

This is not a winter type project.... there is an extreme. Amount of work involved here.

My suggestion is either hack up the whole rear of the car and put a carbed olds toronado setup back there, find a subaru FWD auto setup and put everything in. Or find a VW passat FWD setup and put everything in.


Your limitations on automatics are going to be pushing beyond factory hp will either blow the trani or will require an expensive build on the trans and wont be guaranteed to work. I suggest running close to stock power. My preference would be a subaru fwd for fit or audi 2.8v6 for more tech and a killer sound.

[zach914v8]

This is not a winter type project.... there is an extreme. Amount of work involved here.

My suggestion is either hack up the whole rear of the car and put a carbed olds toronado setup back there, find a subaru FWD auto setup and put everything in. Or find a VW passat FWD setup and put everything in.


Your limitations on automatics are going to be pushing beyond factory hp will either blow the trani or will require an expensive build on the trans and wont be guaranteed to work. I suggest running close to stock power. My preference would be a subaru fwd for fit or audi 2.8v6 for more tech and a killer sound.

GM TURBO 425 out of a 70's era Eldorado. It's is mega heavy but is bullet proof, and you could bolt a big block to it. It would probably pop wheelies, and that would be super sick!

[Mike Bellis]

Toronado tranny is transverse and would mount the motor sideways...

[falcor75]

Theres a guy in Denmark making a box so that you can run a Mercedes/996 tiptronic box as a standalone unit connected to whatever engine you want. Theres a guy here in Sweden running one connected to a TDI engine in his old VW Buss.

http://boxerville.se/forum/viewtopic.php?id=42970 (in swedish)

https://ofgear.dk/index.html

[zach914v8]

Toronado tranny is transverse and would mount the motor sideways...

Are you talking about the th425 or th325? It keeps the motor inline has a diff under the engine.

[zach914v8]

here is a th425 in a fiero...

[Mike Bellis]

I guess you are right. I have seen it mounted transverse in a 914. possibly a different transmission... But in this case, it puts the axles in the wrong location so the engine would need to sit in the rear trunk.

(IMG:http://www.914world.com/bbs2/uploads_offsite/image.motortrend.com-10496-1472840329.1.jpg)

[zipedadoo]

What about a Fiero trans axle? I have seen v8's in Fieros with the manual transmission don't know if anyone has done one with a automatic. I'd guess it would all fit in a 914????

[jd74914]

I believe the controllers for newer Subaru automatics are relatively decoupled from the engine and chassis controllers which would make them easier to swap. One of those coupled with it's factory motor might not be too bad. It really comes down to how hard it is to remove the RWD portion.

Alternatively, you can also run an ECU which has the capability for automatic transmission control. I believe MegaSquirt has a standalone unit for AT control and some others (Syvecs, MoTeC) have all of the controls for the transmission pumps, etc. built in. Of course tuning drive-ability is another story...

[Mueller]

The smartest and easiest choice would be a Subaru n/a 6 cylinder with mating automatic transmission from the same car.

No silly engine adapters or special flywheels/flex plates.

Plenty of power, no need for the bragging rights just to say you have V8 as much as I like some of those conversions.

[zach914v8]

I guess you are right. I have seen it mounted transverse in a 914. possibly a different transmission... But in this case, it puts the axles in the wrong location so the engine would need to sit in the rear trunk.

(IMG:http://www.914world.com/bbs2/uploads_offsite/image.motortrend.com-10496-1472840329.1.jpg)

On the th425 and maybe even the th325you can flip the diff upside down. then run the engine facing the rear. that would put the axles in the correct spot. If you wanted to get fancy with it you could install a tail housing from a th400 and run a short drive shaft to a 4x4 front diff or flip rwd upside down and seal vent hole.

[Mike Bellis]

I guess you are right. I have seen it mounted transverse in a 914. possibly a different transmission... But in this case, it puts the axles in the wrong location so the engine would need to sit in the rear trunk.

(IMG:http://www.914world.com/bbs2/uploads_offsite/image.motortrend.com-10496-1472840329.1.jpg)

On the th425 and maybe even the th325you can flip the diff upside down. then run the engine facing the rear. that would put the axles in the correct spot. If you wanted to get fancy with it you could install a tail housing from a th400 and run a short drive shaft to a 4x4 front diff or flip rwd upside down and seal vent hole.

Still not in the correct spot but closer. Still need to chop out the trunk.

Mueller has the winning idea. Subaru 6 from an SVX FWD. Just need motor mounts and axles. Wire it up and go.

[Chris H.]

here is a th425 in a fiero...

That's an unusual swap. The Fiero trans is transversely mounted in stock form. There is a tiny, very deep trunk at the rear that has been cut out of that car. I know because I.... Cough..cough... ownedafierogtonce (IMG:style_emoticons/default/hide.gif) What? Nothing. Let's move on.

You JUST MISSED ThePaintedMan's SVX trans... he sold it with the car I think. It was FWD. Rare bird.

[Mike Bellis]

Not exactly a donor car, but this is what you need to find...

http://www.ebay.com/itm/Subaru-SVX-L-/1723...em=172324219259