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Original Message
Size isn't all that matters
By Dan Davis - 12/19/2001 7:28:53 PM; IP 202.135.223.111
Put simply, an engine is only an air pump. The more air that can go into the cylinder will make that much more power. Every little bit helps.

However, port shape has as much to do with it as size. Air doesn't like to turn corners, so big ports with a dog leg are virually useless (look at a 429CJ or 351C-4V exhaust port for extreme examples).

Ford's intake ports are historically very good. The weakness is on the exhaust side. It's not that the engineers didn't know what they were doing. The problem was the chassis configuration. The use of a spring on top of the control arm lead to narrow engine compartments. This lead to limitations for the exit angle of the exhaust port. In turn, this lead to the unbalanced heads we have to deal with -- much more intake flow than exhaust. FYI, unbalanced means that the exhaust flow is less than ~85% of the intake flow.

I'll stop now as I could go on for about an hour, but that would bore everybody.

Cheers,
Dan
This thread, so far...
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Collapse <a href=../ForumFE/reply.aspx?ID=10119&Reply=10119><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor10119" onclick="return false;">What is the major componet to making power</a>&nbsp;-- <font color=#0000ff>mikeb, <i>12/19/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=10119', contentMargin: 60, icon: $('anchor10119') }); </script>  What is the major componet to making power -- mikeb, 12/19/2001
Collapse <b>Size isn't all that matters</b>&nbsp;-- <font color=#0000ff>Dan Davis, <i>12/19/2001</i></font>Size isn't all that matters -- Dan Davis, 12/19/2001
 RE: Size isn't all that matters -- mikeb, 12/19/2001
Collapse <a href=../ForumFE/reply.aspx?ID=10127&Reply=10119><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor10127" onclick="return false;">Bore us Dan,,,,,PLEASE n/m</a>&nbsp;-- <font color=#0000ff>Jim, <i>12/20/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=10127', contentMargin: 60, icon: $('anchor10127') }); </script>  Bore us Dan,,,,,PLEASE n/m -- Jim, 12/20/2001
Collapse <a href=../ForumFE/reply.aspx?ID=10129&Reply=10119><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor10129" onclick="return false;">OK, what subject? [n//m]</a>&nbsp;-- <font color=#0000ff>Dan Davis, <i>12/20/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=10129', contentMargin: 60, icon: $('anchor10129') }); </script>  OK, what subject? [n//m] -- Dan Davis, 12/20/2001
Collapse <a href=../ForumFE/reply.aspx?ID=10131&Reply=10119><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor10131" onclick="return false;">RE: OK, what subject? [n//m]</a>&nbsp;-- <font color=#0000ff>Bob, <i>12/20/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=10131', contentMargin: 60, icon: $('anchor10131') }); </script>  RE: OK, what subject? [n//m] -- Bob, 12/20/2001
 High lift / low lift air flow -- Travis Miller, 12/20/2001
Collapse <a href=../ForumFE/reply.aspx?ID=10134&Reply=10119><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor10134" onclick="return false;">Good Subject...What about triple cuts too? n/m</a>&nbsp;-- <font color=#0000ff>Jim, <i>12/20/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=10134', contentMargin: 60, icon: $('anchor10134') }); </script>  Good Subject...What about triple cuts too? n/m -- Jim, 12/20/2001
Collapse <a href=../ForumFE/reply.aspx?ID=10138&Reply=10119><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor10138" onclick="return false;">RE: Good Subject...What about triple cuts too? n/m</a>&nbsp;-- <font color=#0000ff>Bob, <i>12/21/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=10138', contentMargin: 60, icon: $('anchor10138') }); </script>  RE: Good Subject...What about triple cuts too? n/m -- Bob, 12/21/2001
Collapse <a href=../ForumFE/reply.aspx?ID=10174&Reply=10119><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor10174" onclick="return false;">RE: Good Subject...What about triple cuts too? n/m</a>&nbsp;-- <font color=#0000ff>Mario428, <i>12/23/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=10174', contentMargin: 60, icon: $('anchor10174') }); </script>  RE: Good Subject...What about triple cuts too? n/m -- Mario428, 12/23/2001
Collapse <a href=../ForumFE/reply.aspx?ID=10184&Reply=10119><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor10184" onclick="return false;">RE: Good Subject...What about triple cuts too? n/m</a>&nbsp;-- <font color=#0000ff>Bob, <i>12/23/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=10184', contentMargin: 60, icon: $('anchor10184') }); </script>  RE: Good Subject...What about triple cuts too? n/m -- Bob, 12/23/2001
 RE: Good Subject...What about triple cuts too? n/m -- Mario428, 12/24/2001
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