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Large port 390 heads - Anyone know the REAL story?
By Derek - 03/20/2002 3:46:55 AM; IP 207.102.191.57
We've all read and heard stories over the years, about where the 428CJ heads originated from. Most prominent is that Ford 'dipped into their parts bin' and chose low-riser 427 heads for this new motor, based on prompting from Bob Tasca, a major impetus behind the engine's development.

Unfortunately, there's something missing in this story, since according to Ford's info, these low-riser 427's from '63-'64 were outfitted with heads having only 1.34" x 1.93" intake ports. We all know the CJ heads have 1.34" x 2.34" intake ports. Medium-riser heads are different again, listed as having 1.34" x 2.06" ports, and Hi-risers are 1.34" x 2.72".

Years ago, I helped pull apart a '66 390 for a rebuild, and found that it had heads with big 1.34" x 2.34" intakes, although it had only the 2.03" & 1.56" valves. Since this was over two years before the release of the CJ, as well as being a specification that supposedly hadn't existed before, I'm wondering what prompted Ford to enlarge the ports, but do no other significant work on these heads?

Further, there is now an auction on eBay for a set of..."Early Ford 390 Hi-port heads. Casting # EDC-6090-E. Intake ports are 1.34 x 2.34 inches. Valves are 2.02/1.55. Early machined combustion chambers."
[http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=1813960472]

Aside from the later 427's, and the early ('58-'60) 352 heads, the only 'machined chambers' I've seen on FE heads were on some of the Edsel ones, so does this casting number jive with that?
This thread, so far...
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Collapse <b>Large port 390 heads - Anyone know the REAL story?</b>&nbsp;-- <font color=#0000ff>Derek, <i>03/20/2002</i></font>Large port 390 heads - Anyone know the REAL story? -- Derek, 03/20/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12118&Reply=12116><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12118" onclick="return false;">Here's my opinion.</a>&nbsp;-- <font color=#0000ff>Royce Peterson, <i>03/20/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12118', contentMargin: 60, icon: $('anchor12118') }); </script>  Here's my opinion. -- Royce Peterson, 03/20/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12127&Reply=12116><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12127" onclick="return false;">RE:Head games...</a>&nbsp;-- <font color=#0000ff>Mike McQuesten, <i>03/20/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12127', contentMargin: 60, icon: $('anchor12127') }); </script>  RE:Head games... -- Mike McQuesten, 03/20/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12132&Reply=12116><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12132" onclick="return false;">Small runner FE heads first appeared in 1966.</a>&nbsp;-- <font color=#0000ff>Dave Shoe, <i>03/20/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12132', contentMargin: 60, icon: $('anchor12132') }); </script>  Small runner FE heads first appeared in 1966. -- Dave Shoe, 03/20/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12153&Reply=12116><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12153" onclick="return false;">Other questions...Other myths.</a>&nbsp;-- <font color=#0000ff>Derek, <i>03/21/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12153', contentMargin: 60, icon: $('anchor12153') }); </script>  Other questions...Other myths. -- Derek, 03/21/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12154&Reply=12116><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12154" onclick="return false;">CJ versus MR</a>&nbsp;-- <font color=#0000ff>Royce Peterson, <i>03/21/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12154', contentMargin: 60, icon: $('anchor12154') }); </script>  CJ versus MR -- Royce Peterson, 03/21/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12161&Reply=12116><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12161" onclick="return false;">RE: CJ versus MR</a>&nbsp;-- <font color=#0000ff>Joel, <i>03/21/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12161', contentMargin: 60, icon: $('anchor12161') }); </script>  RE: CJ versus MR -- Joel, 03/21/2002
 RE: CJ versus MR -- Royce Peterson, 03/21/2002
 RE: Other questions...Other myths. -- Bob, 03/21/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12168&Reply=12116><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12168" onclick="return false;">RE:early '52/'32 solid engines</a>&nbsp;-- <font color=#0000ff>Mike McQuesten, <i>03/21/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12168', contentMargin: 60, icon: $('anchor12168') }); </script>  RE:early '52/'32 solid engines -- Mike McQuesten, 03/21/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12173&Reply=12116><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12173" onclick="return false;">RE:early '52/'32 solid engines</a>&nbsp;-- <font color=#0000ff>Bob, <i>03/21/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12173', contentMargin: 60, icon: $('anchor12173') }); </script>  RE:early '52/'32 solid engines -- Bob, 03/21/2002
 Info from the grey matter zone.... -- kevin, 03/22/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12224&Reply=12116><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12224" onclick="return false;">RE:'Shell' vs. 'Dumbbell</a>&nbsp;-- <font color=#0000ff>Derek, <i>03/25/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12224', contentMargin: 60, icon: $('anchor12224') }); </script>  RE:'Shell' vs. 'Dumbbell -- Derek, 03/25/2002
 RE:Dazed & Confused -- Mike McQuesten, 03/25/2002
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