Holley Heads

automotive breath · Post by **automotive breath** » Tue Sep 01, 2009 9:30 pm

I will post pictures and a few measurements in about a week and a half.

Ron Miller · Post by **Ron Miller** » Wed Sep 02, 2009 12:19 pm

BEARCAT wrote:THE CANFIELD ALUMINUM HEADS WERE CAST BY CANFIELD CYLINDER HEADS IN OHIO. BRODIX ONLY CASTED THE SMALL BLOCK CHEVY AND SMALL BLOCK FORD HOLLEY HEADS IN THE FIRST FEW YEARS THEY WERE MADE.

The BB Chevy head may have been casted at Canfield in Ohio, But . Where did the core and head design originate from

Mena, Arkansas .

EDC · Post by **EDC** » Wed Sep 02, 2009 1:57 pm

Ron Miller wrote:
BEARCAT wrote:THE CANFIELD ALUMINUM HEADS WERE CAST BY CANFIELD CYLINDER HEADS IN OHIO. BRODIX ONLY CASTED THE SMALL BLOCK CHEVY AND SMALL BLOCK FORD HOLLEY HEADS IN THE FIRST FEW YEARS THEY WERE MADE.
The BB Chevy head may have been casted at Canfield in Ohio, But . Where did the core and head design originate from Mena, Arkansas .

Whoa boy... this should get good once John Fenton finds out!

automotive breath · Post by **automotive breath** » Wed Sep 09, 2009 10:00 pm

I roughed in these ports for a 355 bracket engine. As I said earlier the
design is good. After removing ~ 0.100" of material from the port roof,
there is still ~ 0.450" left to work with. Also there is plenty of material to
work the short turn.

revolutionary · Post by **revolutionary** » Wed Sep 09, 2009 10:33 pm

I am doing a set of the Holley SBF heads right now and I wish you would have posted a 'before' pic. These Ford heads have a massive wing before the guides. Knocking that out and opening up the bowl to where it should be brought the heads from 234 to 264cfm. Still a really small runner with 2.02 valves.

Looks like your bowls are still small but it looks like you are in the 'work in progress' phase.

automotive breath · Post by **automotive breath** » Wed Sep 09, 2009 10:56 pm

I didn't think to get before pictures. The only place I removed a lot of
material is the port roof. I mentioned earlier the guide boss was huge, once
that was worked the port looked a lot nicer. These have a ways to go, my
own stuff always gets pushed aside.

EDC · Post by **EDC** » Thu Sep 10, 2009 7:48 am

Here's a set of unported, OTB Holley 575 small block Ford heads (left) versus the Brodix ST50 heads (right). The Holleys "look" like an Edelbrock casting they way the exhaust flange is molded and the rocker bosses but I am probably WAY OFF!