SirKnightTG

BTW, with a good tune the auto (5r55s) should be able to handle the 5.4. If it did fail somehow, then a level 10 built 5r55s would take it no problem.

tx_zstang

Ah, another swapper! There's a little more to it than just the engine/ecu.
I suggest you look at mustangcollective.com, as there's a lot of us on there who've done (or are in the process of ) v8 swaps.

As far as the auto tranny, if the bellhousings are the same, it'll bolt up (i'll found out in a couple of weeks). I'd use a different converter vs the stock v6 one (I have a tci 3000 stall for sale locally; sorry, shameless plug).
Otherwise just pick up a gt tranny.

You should use a 8.8 rear end and appropriate driveshaft. If you still have the stock v6 one, you can upgrade to a shaftmasters, and it'll fit both v6 and gt.

You'll need different a/c lines to the compressor (I know of a hookup in s.a. who has some).
And of course, a ecu and engine wiring harness, best if it matches your year car (07-09).

Where in tx are you? I'd be happy to offer whatever advice I can while I'm doing my swap.

tx_zstang

...try to stick with the discussion in one category... v6 or v8

themaverick19

so i just need the driveshaft to connect the trans with the motor then cool, also i hear the ac wiring is on the opposite or different on the gt is this true

themaverick19

am in the valley like mcallen,tx or brownsville deep south of texas lol but yea am interested in a swap but i hear its a bunch of work and i get told to just trade her in.....also one question were the shelby gt offer in automatic

FastDEW

Why not sell the V6 car and buy a used GT? Seems easier and probably less expensive.

howarmat

its not to hard to find a cheap 4.6 engine lying around but to me it doesnt really have any wow factor.

Now get rid of the 4.0 and put a 5.4 with 6 speed in it and that will be something a little more impressive.

Best idea yet is keep the 4.0 and put it into the 11s ....now that is something

pascal

Totally agree.

But someone needs to merge this thread with that one: https://mustangforums.com/forum/4-0l...onversion.html

ODDYSEY

Done.. and moved to Technical Discussion.

tx_zstang

Thanks Matt!

I must say, having a blower on a V6 that smokes a lot of V8's does get a lot of ooohs and ahhhhs. It IS different. But, it can't come close to a blown v8 of course.

If you're just only looking to do a swap and run mostly stock engine with soem bolt ons, and you get the parts for a reasonable price, yes, you can do it economically. If you care about resale value of the car, then sell the V6 and get a GT.

It does some ***** and gumption to go through with a v8 swap. It's not for the faint of heart, lol!