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Compression ratio, Edelbrock head
By P - 12/22/2003 11:34:19 AM; IP 66.89.75.42
Hi guys, I have to weigh in on this one.

I have a friend who had a 400-hp 390 as offered by Eaton Dearborn Marine in a Higgins speedboat. It was obviously a high performance 390, with "good" heads.

He wanted to make it go faster and got the aluminum Edelbrocks. Guess what? The boat went faster with the iron Ford heads. He was pissed. The aluminum Edelbrocks looked good, but "something" was not quite right.

My Guess, and it is only a guess, is the cc volume on the aluminum head was bigger than the iron Ford head. Therefore I would check this subject matter out very carefully.

regards, P
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Collapse <a href=../ForumFE/reply.aspx?ID=19500&Reply=19500><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor19500" onclick="return false;">cyl heads</a>&nbsp;-- <font color=#0000ff>russ, <i>12/17/2003</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=19500', contentMargin: 60, icon: $('anchor19500') }); </script>  cyl heads -- russ, 12/17/2003
Collapse <a href=../ForumFE/reply.aspx?ID=19508&Reply=19500><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor19508" onclick="return false;">RE: cyl heads</a>&nbsp;-- <font color=#0000ff>Gerry Proctor, <i>12/18/2003</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=19508', contentMargin: 60, icon: $('anchor19508') }); </script>  RE: cyl heads -- Gerry Proctor, 12/18/2003
Compression ratio, Edelbrock head -- P, 12/22/2003
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