SpeedTalk Store - Opinion Columns

Holley Heads

General engine tech -- Drag Racing to Circle Track

Moderator: Team

Postby automotive breath » Tue Sep 01, 2009 8:30 pm

I will post pictures and a few measurements in about a week and a half.
automotive breath
Guru
Guru
 
Posts: 1606
Joined: Sun Aug 28, 2005 10:54 pm

Postby Ron Miller » Wed Sep 02, 2009 11:19 am

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 .
Ron Miller
Ron Miller
Pro
Pro
 
Posts: 280
Joined: Tue Jun 21, 2005 12:41 pm

Postby EDC » Wed Sep 02, 2009 12:57 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!

:shock:
"Quality" is like buying oats. You can pay a fair price for it and get some good quality oats,
or you can get it a hell of a lot cheaper, when it's already been through the horse.

Ed Curtis
www.FlowTechInduction.com
EDC
Pro
Pro
 
Posts: 279
Joined: Wed Dec 29, 2004 7:33 pm

Postby automotive breath » Wed Sep 09, 2009 9:00 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.

Image

Image
automotive breath
Guru
Guru
 
Posts: 1606
Joined: Sun Aug 28, 2005 10:54 pm

Postby revolutionary » Wed Sep 09, 2009 9:33 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.
Daryl

Revolutionary Performance and Machine
revolutionary
Guru
Guru
 
Posts: 1397
Joined: Wed Feb 20, 2008 10:43 pm
Location: Colleyville, TX

Postby automotive breath » Wed Sep 09, 2009 9:56 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.
automotive breath
Guru
Guru
 
Posts: 1606
Joined: Sun Aug 28, 2005 10:54 pm

Postby EDC » Thu Sep 10, 2009 6:48 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! :D

Image
"Quality" is like buying oats. You can pay a fair price for it and get some good quality oats,
or you can get it a hell of a lot cheaper, when it's already been through the horse.

Ed Curtis
www.FlowTechInduction.com
EDC
Pro
Pro
 
Posts: 279
Joined: Wed Dec 29, 2004 7:33 pm

Previous

Return to Engine Tech

Who is online

Users browsing this forum: 41apache, cengles, Cid, Cubic_Cleveland, Exabot [Bot], Google [Bot], jim_ss409, roboto65, wrenchbender, Yahoo [Bot] and 33 guests