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FE cyl.head flow #'s
By Stanley Superior - 12/16/2000 9:54:24 PM; IP 209.95.192.18
Ive tested many cyl.heads and the exauhst ports are not that great. at 28",the C8 casting CJ 428 head (in unported form),only mustered a weak 165 CFM @ .500" lift. After porting,it jumped to 216 CFM with the same lift value. An engine this size should have had the port flowing 216 CFM to begin with,then able to improve upon it from there. A 427 MR head C5 casting was a little better,but not much. At the same lift,the MR head was showing only 188 CFM (due to the larger exauhst valve). After porting the MR head showed a jump to 232 CFM,better,but still not very good considering the displacement of the motor. Dove heads are much,much better on the ex. side. A typical BB Chevy head is already in the 240+ range in unported form. Fords have always suffered from poor exauhst flow,although they are better than Buick,Olds,and Pontiac heads. The BB Ford (385 series) heads have exauhst flow,thats in the 200+ range in unported form,but this is the 1968-1972 heads Im reffering to,not 73 and later (those heads have very clogged up ports because of the air injection bosses cast inside the port). The 427 FE heads are the better flowing heads of all the FE's,and all the "garden variety" FE's are suffering from the same thing as all other Fords,they're choked!
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Collapse <b>FE cyl.head flow #'s</b>&nbsp;-- <font color=#0000ff>Stanley Superior, <i>12/16/2000</i></font>FE cyl.head flow #'s -- Stanley Superior, 12/16/2000
Collapse <a href=../ForumFE/reply.aspx?ID=3653&Reply=3652><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor3653" onclick="return false;">RE: FE cyl.head flow #'s , SO</a>&nbsp;-- <font color=#0000ff>RC Moser, <i>12/16/2000</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=3653', contentMargin: 60, icon: $('anchor3653') }); </script>  RE: FE cyl.head flow #'s , SO -- RC Moser, 12/16/2000
 I believe Ed F. asked about his flow-bench results, earlier. [n/m] -- Mr F, 12/17/2000
Collapse <a href=../ForumFE/reply.aspx?ID=3654&Reply=3652><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor3654" onclick="return false;">Neat data, but isn't it old news that 427 ports are best? [n/m]</a>&nbsp;-- <font color=#0000ff>Mr F, <i>12/17/2000</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=3654', contentMargin: 60, icon: $('anchor3654') }); </script>  Neat data, but isn't it old news that 427 ports are best? [n/m] -- Mr F, 12/17/2000
Collapse <a href=../ForumFE/reply.aspx?ID=3656&Reply=3652><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor3656" onclick="return false;">RE: early 429 ports are best</a>&nbsp;-- <font color=#0000ff>Stanley Superior, <i>12/17/2000</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=3656', contentMargin: 60, icon: $('anchor3656') }); </script>  RE: early 429 ports are best -- Stanley Superior, 12/17/2000
 Well, sure - but I just meant among the FEs. [n/m] -- Mr F, 12/17/2000
Collapse <a href=../ForumFE/reply.aspx?ID=3657&Reply=3652><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor3657" onclick="return false;">Which head?</a>&nbsp;-- <font color=#0000ff>Will, <i>12/17/2000</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=3657', contentMargin: 60, icon: $('anchor3657') }); </script>  Which head? -- Will, 12/17/2000
Collapse <a href=../ForumFE/reply.aspx?ID=3659&Reply=3652><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor3659" onclick="return false;">Incomplete data.....</a>&nbsp;-- <font color=#0000ff>Hot Rod Lorenzen, <i>12/17/2000</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=3659', contentMargin: 60, icon: $('anchor3659') }); </script>  Incomplete data..... -- Hot Rod Lorenzen, 12/17/2000
Collapse <a href=../ForumFE/reply.aspx?ID=3660&Reply=3652><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor3660" onclick="return false;">RE: Incomplete data.....</a>&nbsp;-- <font color=#0000ff>Stanley Superior, <i>12/17/2000</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=3660', contentMargin: 60, icon: $('anchor3660') }); </script>  RE: Incomplete data..... -- Stanley Superior, 12/17/2000
 RE: Incomplete data. and not running heads up! -- RC Moser, 12/17/2000
 RE: Incomplete data..... -- Will, 12/17/2000
Collapse <a href=../ForumFE/reply.aspx?ID=3665&Reply=3652><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor3665" onclick="return false;">Don't Lose Your Head</a>&nbsp;-- <font color=#0000ff>Ed Foral, <i>12/17/2000</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=3665', contentMargin: 60, icon: $('anchor3665') }); </script>  Don't Lose Your Head -- Ed Foral, 12/17/2000
 RE: Don't Lose Your Head -- Will, 12/18/2000
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