Originally Posted by goinbroke2 (Post 565889)

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.

Originally Posted by Glenn Briglio (Post 565903)

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

Originally Posted by Jim Caughlin (Post 565906)

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.

Originally Posted by Jim Caughlin (Post 565906)

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.

Originally Posted by Glenn Briglio (Post 565914)

So is this a dished or domed piston?

Originally Posted by Jim Caughlin (Post 565918)

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