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Original Message
Don't Lose Your Head
By Ed Foral - 12/17/2000 10:52:17 PM; IP 152.163.207.206
Will
If your Edelbrock heads are in good shape, then stick with them.
There are two issues here. One being real world performance, and the other being bench racing with head flow readings.

On the first issue, I have helped a friend with putting together a 390 with unported Edelbrock heads in a Falcon, and he is shifting not much over 5000RPM and running near 12.0 in the 1/4. Now I have been trying to convince him to shift at a little higher RPM to make more use of his cam, but he is shy of blowing his engine, because of his friend who can't get a Chevy 350 to hold together.
My point, is that the same combo with 428 cubes would be even more potent, and the Edelbrock heads are just fine.
When we move on to the second issue, I have to ask you where you are getting your flow bench specs for the Edelbrock FE heads and others, because what I have shows the Edelbrock #6006 heads out flowing factory MR heads from .100 to .600 lift.
When the comparison to Windsor heads is made, they outflow even Victor Jr's from .100 to .600 lift.
Also stock MR heads out flowed them up to .500, then the Vic Jr's creaping ahead on the intake side at .600 lift.
I can not comment much on stock 428CJ heads, because I have no flow data on them.
Dove shows their Canadian CJ heads flowing 330CFM@700 lift on the intake, and 210CFM@600 lift on the exhaust. If the Edelbrocks were opened up to .700, I would expect them to close the gap on the intake side, even if they do not out flow them. They flow comparable on the exhaust side to the 6006's.
I have never seen claims that a stock CJ head outflowed a stock MR head, so I would expect that an Edelbrock head would outflow a stock CJ head.
I have been compiling a spreadsheet with head comparisons with flow data, and the sources which I found the data. I am willing to E-Mail a copy to anyone, I just request that you E-Mail me first and ask for it, so that I am assured to have your correct address to send it to.

Ed
This thread, so far...
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Collapse <a href=../ForumFE/reply.aspx?ID=3652&Reply=3652><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor3652" onclick="return false;">FE cyl.head flow #'s</a>&nbsp;-- <font color=#0000ff>Stanley Superior, <i>12/16/2000</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=3652', contentMargin: 60, icon: $('anchor3652') }); </script>  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 <b>Don't Lose Your Head</b>&nbsp;-- <font color=#0000ff>Ed Foral, <i>12/17/2000</i></font>Don't Lose Your Head -- Ed Foral, 12/17/2000
 RE: Don't Lose Your Head -- Will, 12/18/2000
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