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48 dif?
By 390 ranger - 09/28/2003 6:46:28 PM; IP 141.151.153.126
I have a standard bore 390 with reinforced crank webs and skirt ribs the only markings are the standard 352 on front and and upside down 48 dif were casting number usually are.
I believe it is just a heavy durty truck block. i plan on boring it to 4.13 and hard blocking any comments or info would be appreciated.

thanks
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Collapse <b>48 dif?</b>&nbsp;-- <font color=#0000ff>390 ranger, <i>09/28/2003</i></font>48 dif? -- 390 ranger, 09/28/2003
Collapse <a href=../ForumFE/reply.aspx?ID=18487&Reply=18485><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor18487" onclick="return false;">Get it sonic checked but first do the drill test.</a>&nbsp;-- <font color=#0000ff>Royce Peterson, <i>09/28/2003</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=18487', contentMargin: 60, icon: $('anchor18487') }); </script>  Get it sonic checked but first do the drill test. -- Royce Peterson, 09/28/2003
 RE: Get it sonic checked but first do the drill test. -- 390 ranger, 09/29/2003
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