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2005 mustang engine swap from V6 to V8

73686 Views 29 Replies 23 Participants Last post by  billthecougnut
I have a 2005 Ford Mustang V6 5 speed. I would like to know what parts besides a transmission, and rear end I would need to complete a engine swap. Where might I locate all these parts as well? I have been using E-bay but cannot seem to find what I need. My buddy says I need a new wiring harness. Any suggestions, comments, I would greatly appreaciate it. this is the first new car I am building. I'm not so good with the computer aspect of it. Thanks
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Welcome to the site. Lets move your thread and see if we can get you a quick answer.
I would find a totaled GT

you going to need, engine, tranny, harness, PCM, Complete rear end, fuel pumps, lines, etc.
G
i would trade it for a gt
trade it in devil dog for a GT. The cost of labor and getting every thing right is not worth it and if you want to do it your self its going to give you the biggest head ache and wont be worth it.
if its your daily driver, then it would be much easier to just trade it in for a gt. however, a v8 swapped v6 could be very stealthy on the street and at the track(to the insurance company as well...cough cough wink wink). if this isnt a daily driver, go with a totaled gt.. take out the rear axle (get 1piece driveshaft please), the tranny(along with mounting brackets), the engine (v8 mounts may be in different spot..welding might be involved--not sure), cooling system, everything under the hood. and the wiring harness( i heard spanish oak is a bit tricky).. its a large headache, and most people say its not worth the trouble(and i agree), but if its something you set your mind to, it can be done

i havent done this to a s197, but i did swap a 4banger to a v8 in a fox, and helped do a v6-v8 swap in a sn95.. get owners manuals to both cars, as well as a chilton to both cars..you need to make sure that all the connections are in their proper place. ect...

and this is something that alot of people forget until last minute..make sure your neighborhood is okay with a totaled car and a car that doesnt run sitting around in a driveway(even in the back yard)..alot of the newer subdivisions wont allow things like that.. and make sure you have ALOT of friends that "owe you a favor" as it will take more than two hands

if you do go thru with it, keep us posted.good luck:bigthumbsup
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Engine, transmission, driveshaft, rear axle, PCM, wiring harness, mounts, some cooling changes. Like Jeo said, really need a donor car!
Our best bet for this thread is none other then 5twenty
Logically speaking, if your current V6 is fair or better condition, trade it in for a GT. Even at a loss (assuming you take a loss on a trade) you will be in your V8 sooner, with less headaches and enjoying it NOW!

Fooling the insurance wont last. As long as you never have an accident, yes, the insurance company will be fool and you will get lower rates. However if you have an accident and the insurance has to fix your car, then the story comes out and the nasty word "fraud" comes into play.
Logically speaking, if your current V6 is fair or better condition, trade it in for a GT. Even at a loss (assuming you take a loss on a trade) you will be in your V8 sooner, with less headaches and enjoying it NOW!

Fooling the insurance wont last. As long as you never have an accident, yes, the insurance company will be fool and you will get lower rates. However if you have an accident and the insurance has to fix your car, then the story comes out and the nasty word "fraud" comes into play.
its not fraud, they will just pay to replace a v6 engine as opposed to a v8, same with turbo cars, if i got in an accident they wouldn't replace my turbo or anything else that wasn't claimed on the insurance
as if there werent enough on this page to overwhelm you, you might need to change out front shocks/springs..im not as savvy with the s197, but with the fox, they needed beefed up front suspension parts to handle extra front end weight. the more i think about it, the more i would get a GT in any circumstance.
I'm no gearhead but from what I have read on this forum I would have to go with making the trade, the labor just doesnt sound worth it.
2005mustang engine swap from v6 to v8

hi, just as stlwagon says all this has to be done. Also the exhaust has to be changed along with the mufflers. As a previous post I asked the same question,as My friend got a good deal on a gt motor and transmission. After all he didnot realize what had to be done, he admitted he would have been better off if he traded for a GT.
I'd like to see a thread where someone actually swaps, with pics and everything. Then, when someone asks if they can do it, we can just show them the 80 page document and the $9000 receipt pile.

"That's all you need to do."

Or you could trade for a $5000 more expensive car.
as if there werent enough on this page to overwhelm you, you might need to change out front shocks/springs..im not as savvy with the s197, but with the fox, they needed beefed up front suspension parts to handle extra front end weight. the more i think about it, the more i would get a GT in any circumstance.
Now your making some real sence.
Or you could be $3000 away from paying off your car, sell it for $14,000, put $11,000 down on a new GT that will cost you $28,000 and end up owing $17,000 which is what you started out with when you bought the first car 3 1/2 years ago. :happyhapp

Total loss: $13,000.

For some of us its not worth it to trade in for a GT. :nogrinner
Now your making some real sence.
well, thats what i was thinking from the beginning...get a GT. but he needed info..
Or you could be $3000 away from paying off your car, sell it for $14,000, put $11,000 down on a new GT that will cost you $28,000 and end up owing $17,000 which is what you started out with when you bought the first car 3 1/2 years ago. :happyhapp

Total loss: $13,000.

For some of us its not worth it to trade in for a GT. :nogrinner
Ah, try buying a used GT. $17,000-$19,000. Minus $11,000 and you owe $6-8,000, instead of $3000.
Ah, try buying a used GT. $17,000-$19,000. Minus $11,000 and you owe $6-8,000, instead of $3000.
I'm not into buying other peoples problems.

With our cars in particular there is the possibility that the car may have had the **** beat out of it by the previous owner. The car could look great but God only knows what kind of punishment its seen.

Sorry but if I was going to buy another mustang, it'd be brand new again. :bigthumbsup
Hi. New here. Sorry to drag this up but I stumbled upon this thread because I found a complete 05+ 4.6 with 11k miles and the owner wants $1200, so I was thinking of buying it and just dropping it in using the current stock drivetrain (except I already added rear gears and T-Lok). I figured I'll replace the drivetrain as it becomes necessary. Oh, I have a loaded V6 auto with Pony pack.

So I need to know, has anyone done this, and what else would I need to get from the scrap yard. I figured ECM, but what about wiring harness, radiator, etc. I'd really like to get some facts, because this might actually be cost effective, or at least a ton more cost effective than spending $4000 on a sc kit.

Thanks!
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