4.0 Stroker Kit - Mustang Evolution

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Old 07-25-2014, 09:30 PM   #1
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Arrow 4.0 Stroker Kit

What kind of horsepower to the wheels will the 4.0 stroker kit from supersixmotorsports give you?? Does anyone on here have it?
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Old 07-26-2014, 11:16 AM   #2
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Anyone lol?
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Old 07-26-2014, 11:23 AM   #3
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no one I know of has it. I think you will be hard pressed to find anyone willing to spend 3K and pat least another 1K to have it installed. I've tossed around the idea but haven't decided where I wanna go with my six. Your best bet is to contact SSM directly to see if they have any numbers for you.
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Old 07-26-2014, 02:15 PM   #4
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You won't see a HUGE gain in power with this stroker kit/forged internals. For a completely stock engine (with 255 rwhp), I believe this kit will land you around 290 rwhp range.

Now if your goal is to stay N/A, I'd say spending 4k out of the door in your car with this kit is a huge waste of money.

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Old 07-26-2014, 04:27 PM   #5
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You will gain an increase in torque proportional to your increase in displacement.




The equation for horsepower = (torque x rpm) /5252


So lets assume your 3.7 makes a peak 300 whp @ 6500 rpms. That means you're making about 242 WTQ at peak whp.

So, lets take our 3.7 and increase it to 4.0, that's an increase of about 8%.
So, 242 WTQ x 1.08 = ~261 WTQ. At the same 6500 rpms, that now gives us a peak RWHP of about 323 whp.

So, obviously the more power you have, the more it will help. However, keep in mind drivetrain loss is a percentage as well, so I don't know that there will necessarily be diminishing returns, but it is a factor to keep in mind. Keep in mind also, the RPM at which you're making peak rwhp will effect things as well, I simply pulled 6500 rpm out of my *** for the sake of example.

More importantly however, I would not slap a stock top end onto this motor, this thing will want to breathe, the stock intake manifold and generic CAI will likely hold it back a tad. However, this is all just ricer math until the rubber hits the road.
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Old 07-26-2014, 04:51 PM   #6
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Good example Voltwings. To help it breathe SSM will probably tell you to let them port your heads and intake manifolds but that will cost another 3K roughly so really it's not worth it in the end.
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Old 07-26-2014, 05:27 PM   #7
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Just forge it and boost it, you won't regret it haha

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Old 07-26-2014, 06:06 PM   #8
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No doubt the engine needs at least a 3.7" stroke. FORD error. I don't think it will fit in the block though. The V6 just isn't set up to work on and build something from. It's a use as is type deal and for 99% of us it's good enough. Find a wrecked late model, take the V8, ecm and trans out, and there you go. Is it worth doing? Probably not. I wish Ford had a Drag Package that owners could install worth say 40HP & 40TQ. That would be nice. If priced right it would sell like crazy. Maybe head / intake swap with aftermarket cams etc. Aftermarket just isn't interested in this deal.
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Old 07-26-2014, 10:35 PM   #9
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Stroke it, then nitrous. Te nitrous is where you see gains and the stroker is for the reliability of forged internals.


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Old 07-26-2014, 11:32 PM   #10
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Think im just going to get forged internals and turbo it, seems the best way to go. Already have the one piece driveshaft so the stock one wont fail on me.
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