4.0L V6 Technical DiscussionsAny questions about engine, transmission, exhaust, tuners/CAI, or gearing can be asked here!
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My Mustang threw the timing chains so I have to replace the engine. Lot's of 06-09 engines available but will they fit in a2005 auto? I know the flex plate and torque converter are different but is that the only difference?
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My question is why would you replace it with another V6? Do a V8 swap if you can. You can probably find a 4.6 from a GT and drop it in. You won't even need to do much to it if you use a complete engine from a GT and you have an auto, and it would be even easier if you found a GT in a scrapyard with all the necessary parts, like the rear end, driveshaft, computer, etc.
The 05's were different in the TBI, but otherwise, other than 1 sensor, I don't remember anything else we switch when I helped out a friend with his engine. He blew out the rt side chain cassette, so it was remove the engine. While we had it out, he found another engine from an 08 from somewhere and we switched it out. I just don't remember us having any big problems with the exchange. Both were 4.0's, and automatics. We even updated his to the later TB so he didn't have the hose heater piece. Much cleaner setup and worked flawlessly. Good luck.
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