jthorn9

It's a bad enough swap. Having owned a 302 and a 3.8L they aren't similar at all. The swap is extremely complicated because very little is similar on the 3.8L to the 5.0L. The 94/95 5.0 (which is what you would have to swap to) is a very unique setup, even in 5.0 terms. While the basic motor swap isn't hard, its the wiring harness and electronics that gets people.

Largest kit I've seen is the 4.3L kit. Which even that I havn't seen much of. I'm assuming it might be because the larger strokes, just like with the 5.0s, have a problem with the rings over time. But then again I'm just guessing.

YoungMinor

[QUOTE=jthorn9;8084224]It's a bad enough swap. Having owned a 302 and a 3.8L they aren't similar at all. The swap is extremely complicated because very little is similar on the 3.8L to the 5.0L. The 94/95 5.0 (which is what you would have to swap to) is a very unique setup, even in 5.0 terms. While the basic motor swap isn't hard, its the wiring harness and electronics that gets people.



I totally agree the wiring for this swap would be extremely complicated!

LilRoush

Not to mention not street legal in the US due to EPA regs and swapping an older motor into a newer car.

YoungMinor

You could always upgrade you 3.8 to a 4.2 with some longtube headers with a new exhaust... that should get you some more hp and tq


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Juan Lopez

Why is everyone always overlooking the potential of just spending the money on building the 3.8? Maybe add some intense Nitro afterwards? I mean, you could spend the money on a swap first and then wait until you can afford to sink another few grand building that, but the truth is you already have a pretty decent starting point under your hood. If you want more displacement specifically GET A V EFFING 8

EHardy1971

I've done a few of these swaps, and they're not THAT hard, providing you get the correct wiring harness and computer. The fuel lines also have to be swapped. The SN95 is easier to do than going from a 2.3 to a 5.0 on a Fox. Ask me how I know.

Ironhandx

http://www.supersixmotorsports.com/

They have the stroker kit that you are looking for. They even have various components broken down into seperate kits so you can replace the heads and then replace the cam, rods and pistons later if cost is an issue.

Beyond that SSM and Morana make stroker engines that'll beat the new 3.7L and have forged internals for boosting. As long as you can drop 7.5-8k on it.

Ironhandx

A lot of people look at building the 3.8 to a 4.2L because the 4.6 is a piece of **** as far as V8s go until you've put more than enough money into it to have built the 3.8 to a 4.2L times over(This can be done cheaply due to the windstar and F-150 motors that share the same block, if your goals aren't in the 600+ horsepower range). Plus then you have something a little more unique with 500+ hp anyways. I'd be less critical of this point of view if you were looking at a 3.7L to 5.0 coyote swap because the new 5.0 is a thing of beauty.

Then you're building your 3.8 and getting more displacement and (IMO) having more fun with it

Juan Lopez

I totally agree the 4.6 is a piece of crap for V-8 performance. Part of why I went with the 3.8, as the 3.7 and 5.0 were completely out of my price range. All I'm saying is this though: most people are looking at roughly 1500-2k after it's all said and done (who pays 5k for a 4.2 stroke?) just to get the 4.2 swap done, and in the end you're up from 190bhp to like 210 or 215 was it? Torque goes up about the same if I remember correctly. $1500 is a good start on saving for boost/nos/tune, or good old fashioned engine overhaul. I think it would be sweet to bang out a 3.8 with 300 hp or so, and it has been done. I paid 6500 for my mustang, so unless I spend more than 10k getting there (unlikely), it is still cheaper and more manageable for me than to have financed a new 3.7 outright, though I would consider the latter a more preferable car.

Ironhandx

A 5k 4.2 swap is going to be making a lot more than 215 RWHP. You'll be in the ~290 range.

A 8k stroker gets you 320+ NA. If you put 20k into the car which gets you into the range of the 3.7's total price though, you can have it turbo'd to ~500 RWHP(plus suspension and all sorts of extra goodies that will be better than the new car) and smoke the new GT's. By a fair margin because you're so much lighter

500 is a fairly easily achieved figure btw. You can pick up an entire cobra fuel system, injectors to tank, fairly cheap(less than $500 some cases). Brakes for another $1400. Suspension $1500(or 5k if you're like me and go with a very-built IRS), engine for 7500-8k, MAF etc and used turbo for around another 3k... and you've got ~4-5k left over for various other oddities and labour before you reach your 20k.

The figure on how much lighter is ~4-600 lbs, which is enough to make your 500 horse equivalent to ~600 horse on the GT, which only actually has 420.

The ability to smoke a 2013 GT in a 2003 V6 is almost priceless however.