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RE: 428 cobra jet head shims

By Hi Rev 352 - 09/26/2005 1:38:27 PM; IP 69.107.79.130

Hi Jim, One thing you may also want to look at is your camshaft timming/duration. there are many diffrent cam designs for all sorts of aplications of the FE motor. Some intended for low compession applications only. I have seen a 390FE with 10.5 factory rated compression were someone had installed a R.V. type camshaft It had a cranking compression of 240psi! A switch to the right cam lowered this number down to 180psi. Curious to know what your engine cranking compression numbers are? Best regards Paul,

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Collapse <a href=../ForumFE/reply.aspx?ID=25841&Reply=25841><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor25841" onclick="return false;">428 cobra jet head shims</a> -- <font color=#0000ff>jim, <i>09/25/2005</i></font><script type="text/javascript">
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428 cobra jet head shims -- jim, 09/25/2005

RE: Is the engine audibly pinging? -- Gerry Proctor, 09/26/2005

RE: 428 cobra jet head shims -- Hi Rev 352, 09/26/2005

Collapse <a href=../ForumFE/reply.aspx?ID=25850&Reply=25841><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor25850" onclick="return false;">Lowering Compression</a> -- <font color=#0000ff>Royce Peterson, <i>09/26/2005</i></font><script type="text/javascript">
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Lowering Compression -- Royce Peterson, 09/26/2005

Collapse <a href=../ForumFE/reply.aspx?ID=25853&Reply=25841><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor25853" onclick="return false;">Cometic vs block & head surface finish</a> -- <font color=#0000ff>Wayne K., <i>09/26/2005</i></font><script type="text/javascript">
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Cometic vs block & head surface finish -- Wayne K., 09/26/2005

I didn't do anything special. -- Royce Peterson, 09/27/2005