3.5L ecoboost turbo's on the 3.7L

Osie · Jun 1, 2016

Hello everyone! long time lurker here, finally registered after a year of holding out :crazy:

. Anyways! I came across a post the other day, a video, talking about modified exhaust manifolds tailored for the 3.7L to fit the 3.5L takeoff turbos... SuperSixMotorsports is fabricating the kit, with an unofficial estimates of the kit at $750ish... for the first kits,considering how cheap the oem 3.5l turbos are, this might be a kit worth looking at. Too early to tell at this point but Im very interested on this build.

Osie · Jun 1, 2016

I also forgot to mention that according to SSM, the turbos do indeed fit the 2015 and up V6's.

Drugdealr · Jun 1, 2016

I might wait on ProCharging my v6 if this kit actually does come out. Any more info or a link to SSM?

DR_ · Jun 1, 2016

I don't think you would be able to run all that boost on 93 octane on the 3.7. If you don't mind being tethered to E85 then that makes it a much better (safer) option.

Osie · Jun 1, 2016

I'm emailed Tom from SSM asking for more info, but yeah DR you're right, the ecoboost motor has a lower compression ratio than the 3.7L so boost might not be that high, but as opposed to the procharger the turbos produce more torque.

Fuse · Jun 1, 2016

This is something I am interested in if the overall price isn't high.

six_shooter · Jun 1, 2016

Seems cost effective to be sure, really excited to see it on a car and just how difficult the build is. Even if someone does it on an 11-14, I'd be interested to see the results.

Procharger seems like it would be an easier build though, no oil lines to plumb.

DR_ · Jun 1, 2016

Yep the Procharger is the easy button on our car. So simple yet very effective.

zackmd1 · Jun 1, 2016

DR_ said:
I don't think you would be able to run all that boost on 93 octane on the 3.7. If you don't mind being tethered to E85 then that makes it a much better (safer) option.

The 3.5 turbos are not much boost at all. A stock 3.5 is only under about 8lbs of boost. How much boost is the procharger running? And did they replace the MAP sensor to handle boost readings?

Hell if this kit is sub $1000 which I highly doubt, I might just attempt it.

DR_ · Jun 1, 2016

I believe stock the 3.5 EB in the F150 runs 12 PSI. I run 8 PSI on my Procharger and yes I had to replace MAP to read boost.

BmacIL · Jun 1, 2016

I'd consider getting the 3.5 EB pistons before attempting this to lower the compression ratio. The oil line ports for the turbo might also be blocked off in the block.

Nick · Jun 1, 2016

The exhaust manifold would be the easiest part. Oil Return lines, downpipe, intercooler piping..............TUNING. Sounds like a rabbit hole. Unless of course you are a pro tuner and fabricator, then I'd like to see it. ;)

BmacIL · Jun 1, 2016

Nick said:
The exhaust manifold would be the easiest part. Oil Return lines, downpipe, intercooler piping..............TUNING. Sounds like a rabbit hole. Unless of course you are a pro tuner and fabricator, then I'd like to see it. ;)

You'll also run into a problem with the mounting the standard oil cooler from the 3.5L EB. It'll run into the EPAS. A remote one would be required.

If you have a lot of money, time and expertise, I'd love to see someone do it. Otherwise, go Procharger.

Fuse · Jun 1, 2016

Sounds like I'll need to commission a shop if I attempt this. Way out of what I can do on my own.

Nick · Jun 1, 2016

You really need a vendor to build a full kit from the intercooler back to at least the down-pipe to mate to the stock exhaust. Then give a plug and play (tested) tune to load at probably around 8 psi on stock internals. With the R&D cost I bet the kit would be at least in the $5-6k range if made with quality parts.

The major reason EB's can do this is because there is tuning support for their platform. I don't think any of the traditional turbo kit vendors have shown an interest in tuning a turbo kit for the V6 S550. Even ones that have turbo kits for the V6 S197.

3.5L ecoboost turbo's on the 3.7L

Osie

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