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Original Message
Pull the flywheel inspectiom cover.
By Dave Shoe - 03/19/2002 7:13:44 PM; IP 12.2.11.131
If you pull the flywheel/flexplate inspection cover while the engine is near TDC, you can tell by looking at the flywheel flange.

The flange on a 360 has a large, deep "half moon" cut out of it next the the small square notch. This "half moon" is necessart in order to drill out the rear throws on the short-stroke crank.

The 390 will only have a square notch on the flange, because the longer throw allows the drill bit to clear the flange. You will sometimes see some "roughning" of the flange next to the notch, but this looks nothing like a huge honking moon.

Shoe.
This thread, so far...
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Collapse <a href=../ForumFE/reply.aspx?ID=12106&Reply=12106><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12106" onclick="return false;">360/390 id</a>&nbsp;-- <font color=#0000ff>Elvis, <i>03/19/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12106', contentMargin: 60, icon: $('anchor12106') }); </script>  360/390 id -- Elvis, 03/19/2002
Collapse <b>Pull the flywheel inspectiom cover.</b>&nbsp;-- <font color=#0000ff>Dave Shoe, <i>03/19/2002</i></font>Pull the flywheel inspectiom cover. -- Dave Shoe, 03/19/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12126&Reply=12106><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12126" onclick="return false;">And the half moon slot</a>&nbsp;-- <font color=#0000ff>John M. Sutton, <i>03/20/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12126', contentMargin: 60, icon: $('anchor12126') }); </script>  And the half moon slot -- John M. Sutton, 03/20/2002
 352/360 cranks are the same casting. -- Dave Shoe, 03/20/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12169&Reply=12106><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12169" onclick="return false;">RE: Half-moon</a>&nbsp;-- <font color=#0000ff>Barry B, <i>03/21/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12169', contentMargin: 60, icon: $('anchor12169') }); </script>  RE: Half-moon -- Barry B, 03/21/2002
 I'd heard about them, now I've seen one. -- Dave Shoe, 03/21/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12109&Reply=12106><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12109" onclick="return false;">RE: 360/390 id</a>&nbsp;-- <font color=#0000ff>Bob, <i>03/19/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12109', contentMargin: 60, icon: $('anchor12109') }); </script>  RE: 360/390 id -- Bob, 03/19/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12130&Reply=12106><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12130" onclick="return false;">RE: 360/390 id</a>&nbsp;-- <font color=#0000ff>Elvis, <i>03/20/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12130', contentMargin: 60, icon: $('anchor12130') }); </script>  RE: 360/390 id -- Elvis, 03/20/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12133&Reply=12106><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12133" onclick="return false;">RE: 360/390 id</a>&nbsp;-- <font color=#0000ff>Bob, <i>03/20/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12133', contentMargin: 60, icon: $('anchor12133') }); </script>  RE: 360/390 id -- Bob, 03/20/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12182&Reply=12106><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12182" onclick="return false;">352/360 crank differences...</a>&nbsp;-- <font color=#0000ff>kevin, <i>03/22/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12182', contentMargin: 60, icon: $('anchor12182') }); </script>  352/360 crank differences... -- kevin, 03/22/2002
 I believe there are two different 360 cranks. -- Dave Shoe, 03/22/2002
 RE: Long rod 390's? -- Barry B, 03/22/2002
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