Original Message
The cam bearing spun first.
By Dave Shoe - 11/23/2001 7:11:12 PM; IP 216.243.158.61
A spun camshaft bearing will break a cam due to the wobble. It happens.

Also, I've noticed that, contrary to popular belief, the "105" block is only truly heavy duty if it's part of an FT361/391 engine assembly. FE360/390 versions of it don't seem to get all the same reinforcements.

Ford apparently used the same "105" mold to make light truck and heavy truck blocks, but they swapped in the mission-specific cores when it came time to select the cylinder walls and cranksaddle bulkhead. Sometimes you'll find a light truck with some heavy duty features (such as reinforced cranksaddle), but I believe the extra thick cylinders of the FT are not common in FE blocks.

As all FE blocks are good and strong, you can build this up, just so long as you don't go overboring it without sonic info.

JMO,
Shoe.
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Collapse <a href=../ForumFE/reply.aspx?ID=9533&Reply=9533><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor9533" onclick="return false;">FE 390 (?) block question</a>&nbsp;-- <font color=#0000ff>John M. Sutton, <i>11/23/2001</i></font><script type="text/javascript">
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 FE 390 (?) block question -- John M. Sutton, 11/23/2001
Collapse <b>The cam bearing spun first.</b>&nbsp;-- <font color=#0000ff>Dave Shoe, <i>11/23/2001</i></font>The cam bearing spun first. -- Dave Shoe, 11/23/2001
 RE: The cam bearing spun first. -- John M. Sutton, 11/24/2001
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