Skip Navigation Links
Setup
New Post
Search
Forum Home
Home
Decoder

Original Message
Someone else woulda said that.
By Dave Shoe - 10/23/2001 11:29:15 PM; IP 12.2.11.131
The 427 cylinder cores were entirely different than the other FE blocks. With only 0.39" between cylinders in a standard bore 427 block, an a specified 0.21" of water between the bores (a dimension which will allow the sand cores to hold together during handling and pouring), the cylinders are only .09" thick to start with. Because of this, Ford engineers moved the parting line of the cylinder jacket below the ring travel area to keep the thin portion of the cylinder away from the stress center. No other FE has the parting line in this position.

Also, 427s frequently got cloverleafed cylinder walls. This allowed the head-bolt torque to be transmitted to the cranksaddles with minimum cylinder wall distortion. This definitely strengthened things up.

Technically, I've noted that 428CJ/PI and 361/391FT blocks also have .21" between the cylinders (I use a drill bit set to measure the gap), just like the 427 supposedly does (I'll dissect my first busted 427s this winter to be sure my info is correct ). Note again, the "weak spot" of non-427 FE cylinders is 2" from the deck, not below the ring travel area as in the 427.

Opinion-wise, I'm gonna sit this discussion out. As I mentioned before, I'm gonna inspect some exploded 427 blocks this winter and determine for myself what a thin cylinder looks like, and what the water jacket design looks like as well.

For now, you should determine whether you feel safe driving around in a thin-cylindered engine. Also, do you know about offset boring and sonic mapping?

I'll report when I find something.

Shoe.
This thread, so far...
Skip Navigation Links.
Collapse <a href=../ForumFE/reply.aspx?ID=8840&Reply=8840><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor8840" onclick="return false;">352-427</a>&nbsp;-- <font color=#0000ff>Tom, <i>10/21/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=8840', contentMargin: 60, icon: $('anchor8840') }); </script>  352-427 -- Tom, 10/21/2001
Collapse <a href=../ForumFE/reply.aspx?ID=8843&Reply=8840><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor8843" onclick="return false;">RE: No poor boys 427s</a>&nbsp;-- <font color=#0000ff>R. Shannon, <i>10/22/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=8843', contentMargin: 60, icon: $('anchor8843') }); </script>  RE: No poor boys 427s -- R. Shannon, 10/22/2001
Collapse <a href=../ForumFE/reply.aspx?ID=8851&Reply=8840><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor8851" onclick="return false;">RE: No poor boys 427s</a>&nbsp;-- <font color=#0000ff>Mike McQuesten, <i>10/22/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=8851', contentMargin: 60, icon: $('anchor8851') }); </script>  RE: No poor boys 427s -- Mike McQuesten, 10/22/2001
Collapse <a href=../ForumFE/reply.aspx?ID=8857&Reply=8840><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor8857" onclick="return false;">RE: No poor boys 427s</a>&nbsp;-- <font color=#0000ff>Tom, <i>10/22/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=8857', contentMargin: 60, icon: $('anchor8857') }); </script>  RE: No poor boys 427s -- Tom, 10/22/2001
Collapse <a href=../ForumFE/reply.aspx?ID=8858&Reply=8840><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor8858" onclick="return false;">RE: No poor boys 427s</a>&nbsp;-- <font color=#0000ff>Tom, <i>10/22/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=8858', contentMargin: 60, icon: $('anchor8858') }); </script>  RE: No poor boys 427s -- Tom, 10/22/2001
Collapse <a href=../ForumFE/reply.aspx?ID=8860&Reply=8840><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor8860" onclick="return false;">RE: No poor boys 427s</a>&nbsp;-- <font color=#0000ff>Travis Miller, <i>10/22/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=8860', contentMargin: 60, icon: $('anchor8860') }); </script>  RE: No poor boys 427s -- Travis Miller, 10/22/2001
Collapse <a href=../ForumFE/reply.aspx?ID=8862&Reply=8840><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor8862" onclick="return false;">RE: No poor boys 427s</a>&nbsp;-- <font color=#0000ff>Tom, <i>10/23/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=8862', contentMargin: 60, icon: $('anchor8862') }); </script>  RE: No poor boys 427s -- Tom, 10/23/2001
 Sorry To Hear About You Having To Wait -- Rollie H, 10/23/2001
 RE: No poor boys 427s -- Reagh, 10/23/2001
Collapse <a href=../ForumFE/reply.aspx?ID=8866&Reply=8840><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor8866" onclick="return false;">RE: No poor boys 427s</a>&nbsp;-- <font color=#0000ff>Randall Horn, <i>10/23/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=8866', contentMargin: 60, icon: $('anchor8866') }); </script>  RE: No poor boys 427s -- Randall Horn, 10/23/2001
Collapse <a href=../ForumFE/reply.aspx?ID=8867&Reply=8840><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor8867" onclick="return false;">RE: No poor boys 427s</a>&nbsp;-- <font color=#0000ff>Tom, <i>10/23/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=8867', contentMargin: 60, icon: $('anchor8867') }); </script>  RE: No poor boys 427s -- Tom, 10/23/2001
 RE: No poor boys 427s -- Tom, 10/23/2001
 RE: No poor boys 427s -- Randall Horn, 10/23/2001
Collapse <b>Someone else woulda said that.</b>&nbsp;-- <font color=#0000ff>Dave Shoe, <i>10/23/2001</i></font>Someone else woulda said that. -- Dave Shoe, 10/23/2001
 RE: Someone else woulda said that. -- Tom, 10/24/2001
 RE: Someone else woulda said that. -- Randall Horn, 10/24/2001
 427 Correction. -- Dave Shoe, 11/03/2001
Post A Response
Name:
Email Address:
Subject:
Post:
Upload Image:
Human Check:   Enter the code 2024133157 in the box