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Bob Willard - 27 Jun 2006 14:43 GMT

I suppose everybody in the world except me knew, but I just noticed
from http://www.fordvehicles.com/cars/mustang/features/specs/ that
the 4.6L 3valve engine is OHV, instead of the SOHC used on earlier
4.6L Mustangs.

Anybody know why Ford went back to OHV? (Obviously simpler than DOHC,
but there must be some other reason, eh?)

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Cheers, Bob

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frank - 27 Jun 2006 18:41 GMT

the 4.6 3v heads are sohc here is a picture
http://www.suttonhp.com/images/upload/items/3v%20head.jpg

>I suppose everybody in the world except me knew, but I just noticed
> from http://www.fordvehicles.com/cars/mustang/features/specs/ that
[quoted text clipped - 3 lines]
> Anybody know why Ford went back to OHV? (Obviously simpler than DOHC,
> but there must be some other reason, eh?)

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trainfan1 - 28 Jun 2006 03:03 GMT

> I suppose everybody in the world except me knew, but I just noticed
> from http://www.fordvehicles.com/cars/mustang/features/specs/ that
[quoted text clipped - 3 lines]
> Anybody know why Ford went back to OHV? (Obviously simpler than DOHC,
> but there must be some other reason, eh?)

"OHV" does not exclude overhead cam(s), it's just kinda' redundant.
Non-Overhead cams should I guess be called "Cam-In-Block" motors, which
could be OHV or flathead designs.

Ford is methodically getting out of the cam-in-block engine business.

Except for the NorthStar architecture, GM is sticking with cam-in-block
/ "OHV" for V- engines, their Atlas series I-4, I-5 & I-6 OHC truck
engines are starting to show up with more & more problems, and are not
delivering the fuel economy hoped for(which is too bad - the 4.2L I-6
has a lot of potential). The I-4 & I-5 are getting increased
displacement & power for 2007.

Rob

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