all you big horsepower guys.... look at these
 

www.araoengineering.com/Chevy/chevybb.htm - 82k - Cached - Similar pages

looks like a lot of moving parts, the more parts, the better percentage rate of failure, imo................

Also a lot of custom parts are required to make the heads fit. Sheet metal intake, custom headers dual magnetos. If you're a gear head maybe it would be fun to build this. I'd just supercharge.

Several years ago Feuling had some 3 valve heads for te BBC that were bolt on and very impressive. I can't find them now though. Does anyone have any info on these?

i just thought for all you blower guys, your days of port restrictions would be OVER

Stevesxm,
Some comments on the performance of these heads:

We built two engines with the Dominion/Arao heads. The push rod angle was, well, stupid to say the least. The ports flowed less than a decent set of Dart Pro1s and the turbulence was nothing short of ear shattering. They don't make a lick of power. They make less power than a standard set of off the shelf CNC ported 23 degree heads. I don't know where they get the claims they publish but I could not back any of them up or even get close. They are one of those heads that street rodders love because its something no one else has and they are cool. Not powerful mind you, just cool.

The 23° SBC is not the correct platform to work from if you wish to design a three or four valve head. Its just silly.
_________________
Darin Morgan
R&D-Cylinder Head Dept.
Reher-Morrison Racing Engines

Cobra Marty,

Jim Feuling, engineer and innovator, passed in 2002.
I believe that his patents are the property of one of the OEM's.

http://www.454ss.com/gallery/JimD/Jim_D.htm
http://www.overdrive.in/forum/viewtopic.php?t=1817
http://www.speedace.info/feuling_streamliner.htm

Thanks, that is right he had the center fire heads but someone ?edelbrock had 3 valve BBC heads. Does anyone remember?

Wasn't there an twin overhead cam version of 4V heads built on an Olds platform a while back? Seemed to recall external serpentine belts to drive the cams.

Yea Batten I think.

i like the way there thinking.
However there flow numbers are less then a set of big chiefs.

Didnt I read something in Powerboat few years back
in regards to overhead cam motors that a company called Millennium Motors was working on?


Gerry