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RE: 428cj & Scj V 's GT 500, what's different?
By salid - 07/10/2002 12:22:07 AM; IP 216.190.108.222
The PI and the CJ are very similar. The real difference is the heads. The C80E-N CJ heads have larger valves and runners than the C8AE-H PI heads. The 67 GT500s used the C7AE-A heads, also small runner/ small valve. The blocks also have some minor oiling defferences and the CJs have extra webs on the main journals. The rotating assembly could have been the same for 68 CJs and 67 or 68 PIs. Same crank and rods ( but not the same as the SCJ). See Shoe's excellent post on 428 pistons. So, all that said, the difference in performance between the PI and the CJ is above 4000 rpm. Bigger valves and runners make better big end power and don't fall off so fast. 68 Shelbys also had glass trunk deck and rear quarter extensions. The convertible parts were also used on the California Special coupes. Even with glass tails the Shelbys still weighed more than the Mustang. The Shelby Registry says that the 68 GT500 weighs 3445 and the KR 3570. Add another 150 for typical weight. Add another 150 for convertible.
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Collapse <a href=../ForumFE/reply.aspx?ID=13556&Reply=13556><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor13556" onclick="return false;">428cj & Scj V 's GT 500, what's different?</a>&nbsp;-- <font color=#0000ff>pop428, <i>07/08/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=13556', contentMargin: 60, icon: $('anchor13556') }); </script>  428cj & Scj V 's GT 500, what's different? -- pop428, 07/08/2002
Collapse <a href=../ForumFE/reply.aspx?ID=13557&Reply=13556><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor13557" onclick="return false;">Nothing.</a>&nbsp;-- <font color=#0000ff>Royce Peterson, <i>07/08/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=13557', contentMargin: 60, icon: $('anchor13557') }); </script>  Nothing. -- Royce Peterson, 07/08/2002
Collapse <a href=../ForumFE/reply.aspx?ID=13559&Reply=13556><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor13559" onclick="return false;">Royce: Thanks for clearing it up!</a>&nbsp;-- <font color=#0000ff>pop428, <i>07/08/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=13559', contentMargin: 60, icon: $('anchor13559') }); </script>  Royce: Thanks for clearing it up! -- pop428, 07/08/2002
Collapse <a href=../ForumFE/reply.aspx?ID=13562&Reply=13556><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor13562" onclick="return false;">A base Mustang coupe would be quicker...</a>&nbsp;-- <font color=#0000ff>Royce Peterson, <i>07/08/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=13562', contentMargin: 60, icon: $('anchor13562') }); </script>  A base Mustang coupe would be quicker... -- Royce Peterson, 07/08/2002
Collapse <a href=../ForumFE/reply.aspx?ID=13567&Reply=13556><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor13567" onclick="return false;">RE: A base Mustang coupe would be quicker...</a>&nbsp;-- <font color=#0000ff>pop428, <i>07/08/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=13567', contentMargin: 60, icon: $('anchor13567') }); </script>  RE: A base Mustang coupe would be quicker... -- pop428, 07/08/2002
Collapse <a href=../ForumFE/reply.aspx?ID=13568&Reply=13556><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor13568" onclick="return false;">RE: A base Mustang coupe would be quicker...</a>&nbsp;-- <font color=#0000ff>Royce Peterson, <i>07/08/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=13568', contentMargin: 60, icon: $('anchor13568') }); </script>  RE: A base Mustang coupe would be quicker... -- Royce Peterson, 07/08/2002
Collapse <a href=../ForumFE/reply.aspx?ID=13572&Reply=13556><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor13572" onclick="return false;">A Good weight lose!</a>&nbsp;-- <font color=#0000ff>pop428, <i>07/08/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=13572', contentMargin: 60, icon: $('anchor13572') }); </script>  A Good weight lose! -- pop428, 07/08/2002
Collapse <a href=../ForumFE/reply.aspx?ID=13579&Reply=13556><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor13579" onclick="return false;">Shelby Cougar's</a>&nbsp;-- <font color=#0000ff>Royce Peterson, <i>07/09/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=13579', contentMargin: 60, icon: $('anchor13579') }); </script>  Shelby Cougar's -- Royce Peterson, 07/09/2002
 Outstanding, I'll look your site up :-) n/m -- pop428, 07/09/2002
Collapse <a href=../ForumFE/reply.aspx?ID=13581&Reply=13556><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor13581" onclick="return false;">428cj & Scj V 's GT 500, what's different?</a>&nbsp;-- <font color=#0000ff>Doug, <i>07/09/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=13581', contentMargin: 60, icon: $('anchor13581') }); </script>  428cj & Scj V 's GT 500, what's different? -- Doug, 07/09/2002
RE: 428cj & Scj V 's GT 500, what's different? -- salid, 07/10/2002
 RE: Super Cobra Jet is Different -- J. Wofford, 07/10/2002
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