2015 Mustang Ecoboost K/SA?

[6130]

Originally Posted by goinbroke2

With regards to the aluminum block/heads, 4 valve per cyl, double overhead cam 3.7 v6;
The three I've drove (one being my daily driver in a f150) works fine, floor it and at 3000rpm it starts to pull hard. It doesn't "nose over" on its way to the factory shift point of 6750RPM!! This is a pick up motor! I thought it was a fluke but have driven two new transit vans with the same motor and same results.

So, in a mustang with loose converter and some gear? I can't imagine it NOT being a rocket. First gear in the 6spd is quite low so 4.56 would probably be as low as you need otherwise the 1-2 shift would be before the first revolution of the tire. lol.

Bottom line, I see a ton of potential in this engine, good flowing heads/strong bottom end and the throttle valve seems to be a good size too although I've never actually measured it. Love to see one run.

Don't know if the engine is tuned the same in trucks as it is in the Mustang, but it feels pretty peppy in the Mustang too.

Ford lists the power peak at 6,500 rpm and the torque peak at 4,250 rpm, so it would need a pretty loose converter and some gearing.

The Stock Classification tool lists the throttle body as being 2.913" (74mm).

And first gear in the 6R60 transmission is 4.171.

[Glenn Briglio]

Anyone look at NHRA engine blueprint specs ? Max compression 15.52 to 1. Are there any errors in those specs?

[Jim Caughlin]

Originally Posted by Glenn Briglio

Anyone look at NHRA engine blueprint specs ? Max compression 15.52 to 1. Are there any errors in those specs?

I wish someone could tell me how to do that! I'm building a NA version of this motor and there isn't enough dome and head milling to get that under any condition.

[Tom Broome]

Originally Posted by Jim Caughlin

I wish someone could tell me how to do that! I'm building a NA version of this motor and there isn't enough dome and head milling to get that under any condition.

The Specs say a chamber volume of 39cc, how big are your heads?
If you follow the Specs and do the math, it comes up at 13.98. Not sure where the max compression of 15.52 comes from.


I'm with you, I don't expect you will get 15:1 with around stock bore and stroke. To get there would require a TDC volume of around 40cc. Tough to do with a deck clearance that seems more workable than the Spec of .023.

[6130]

Are you guys building 2.3 engines for Stock Eliminator?

[Glenn Briglio]

Originally Posted by Jim Caughlin

I wish someone could tell me how to do that! I'm building a NA version of this motor and there isn't enough dome and head milling to get that under any condition.

So is this a dished or domed piston?

[Jim Caughlin]

Originally Posted by Glenn Briglio

So is this a dished or domed piston?

No, this is a motor for SS/Modified. Pretty much all of the dome and smallest combustion chamber and still getting enough valve relief gets you in the 15:1 range. I currently run the 2.3 Ford single cam engine but am in the process of building a Duratec motor which is an Ecoboost without the turbo.

Jim Caughlin
6019 SS/ES

[Glenn Briglio]

Originally Posted by Jim Caughlin

No, this is a motor for SS/Modified. Pretty much all of the dome and smallest combustion chamber and still getting enough valve relief gets you in the 15:1 range. I currently run the 2.3 Ford single cam engine but am in the process of building a Duratec motor which is an Ecoboost without the turbo.

Jim Caughlin
6019 SS/ES

Is the stock piston from Ford a dished or domed piston ?

[Bobby Lundholm]

We just got a 2018 Ecoboost 6 speed in today at work. K/S?

[Dan Fahey]

AND this Mustang is one of the whole new generation of Stockers.

More to come..

D