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Original Message
RE: what year block?
By Ed Foral - 12/30/2000 2:41:22 PM; IP 152.163.204.179
The casting date is viewed from the bottom on the drivers' side front of the block below about where the oil filter housing is mounted.
No matter what the vintage, you should have the block sonic tested, as even the "105" truck blocks are subject to core shift.
I have had a HD 391 truck block checked to find only a .095 wall thickness in spots.

Ed
This thread, so far...
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Collapse <a href=../ForumFE/reply.aspx?ID=3990&Reply=3990><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor3990" onclick="return false;">what year block?</a>&nbsp;-- <font color=#0000ff>406Custom300, <i>12/30/2000</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=3990', contentMargin: 60, icon: $('anchor3990') }); </script>  what year block? -- 406Custom300, 12/30/2000
Collapse <b>RE: what year block?</b>&nbsp;-- <font color=#0000ff>Ed Foral, <i>12/30/2000</i></font>RE: what year block? -- Ed Foral, 12/30/2000
 RE: what year block? -- 406Custom300, 12/30/2000
Collapse <a href=../ForumFE/reply.aspx?ID=3994&Reply=3990><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor3994" onclick="return false;">Its my understanding these are late '70s svc. blocks [n/m]</a>&nbsp;-- <font color=#0000ff>Mr F, <i>12/30/2000</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=3994', contentMargin: 60, icon: $('anchor3994') }); </script>  Its my understanding these are late '70s svc. blocks [n/m] -- Mr F, 12/30/2000
Collapse <a href=../ForumFE/reply.aspx?ID=4007&Reply=3990><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor4007" onclick="return false;">RE: Its my understanding these are late '70s svc. blocks [n/m]</a>&nbsp;-- <font color=#0000ff>406Custom300, <i>12/30/2000</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=4007', contentMargin: 60, icon: $('anchor4007') }); </script>  RE: Its my understanding these are late '70s svc. blocks [n/m] -- 406Custom300, 12/30/2000
 Beats me. I'm told they're somewhat spotty, casting-wise. [n/m] -- Mr F, 12/31/2000
Collapse <a href=../ForumFE/reply.aspx?ID=4010&Reply=3990><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor4010" onclick="return false;">RE: what year block?</a>&nbsp;-- <font color=#0000ff>kevin, <i>12/31/2000</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=4010', contentMargin: 60, icon: $('anchor4010') }); </script>  RE: what year block? -- kevin, 12/31/2000
Collapse <a href=../ForumFE/reply.aspx?ID=4011&Reply=3990><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor4011" onclick="return false;">RE: what year block?</a>&nbsp;-- <font color=#0000ff>kevin, <i>12/31/2000</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=4011', contentMargin: 60, icon: $('anchor4011') }); </script>  RE: what year block? -- kevin, 12/31/2000
 RE: Oil passage mods -- Steve Gundlach, 01/01/2001
 RE: what year block? -- 406Custom300, 12/31/2000
 RE: what year block? -- macx, 01/01/2001
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