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my 390

By Dusty - 06/12/2004 9:18:02 PM; IP 205.188.117.15

that is on my 69 mustang stock has a comp. ratio of 10.5:1. You can use reg. gas but you'll need to back off the advance timing at least 2 degrees below stock specs so you don't have any problems with pre-ignition. To be honest your better off using premium cause you can keep the advance and get more power than with lower grade. Now about the rpm's, mine red lines at 4800. You'll have to get it balanced if you ever want to see 5500. The 390's were not ment to see high rpm's. They like the low rpm torque.

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Collapse <a href=../ForumFE/reply.aspx?ID=21672&Reply=21672><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor21672" onclick="return false;">390 build up ?</a> -- <font color=#0000ff>K-SKI, <i>05/30/2004</i></font><script type="text/javascript">
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390 build up ? -- K-SKI, 05/30/2004

Collapse <a href=../ForumFE/reply.aspx?ID=21689&Reply=21672><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor21689" onclick="return false;">RE: 390 build up ?</a> -- <font color=#0000ff>giacamo, <i>06/01/2004</i></font><script type="text/javascript">
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RE: 390 build up ? -- giacamo, 06/01/2004

Collapse <a href=../ForumFE/reply.aspx?ID=21695&Reply=21672><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor21695" onclick="return false;">RE: 390 build up ?</a> -- <font color=#0000ff>K-SKI, <i>06/02/2004</i></font><script type="text/javascript">
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RE: 390 build up ? -- K-SKI, 06/02/2004

Collapse <a href=../ForumFE/reply.aspx?ID=21707&Reply=21672><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor21707" onclick="return false;">RE: 10.5:1 C-ratio?</a> -- <font color=#0000ff>McQ, <i>06/03/2004</i></font><script type="text/javascript">
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RE: 10.5:1 C-ratio? -- McQ, 06/03/2004

RE: 805 degrees! -- McQ, 06/03/2004

Collapse <a href=../ForumFE/reply.aspx?ID=21714&Reply=21672><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor21714" onclick="return false;">RE: 390 build up ?</a> -- <font color=#0000ff>giacamo, <i>06/04/2004</i></font><script type="text/javascript">
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RE: 390 build up ? -- giacamo, 06/04/2004

Collapse <a href=../ForumFE/reply.aspx?ID=21792&Reply=21672><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor21792" onclick="return false;">RE: 390 build up ?</a> -- <font color=#0000ff>Tim P., <i>06/10/2004</i></font><script type="text/javascript">
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RE: 390 build up ? -- Tim P., 06/10/2004

RE: 390 build up ? -- giacamo, 06/12/2004

Collapse <b>my 390</b> -- <font color=#0000ff>Dusty, <i>06/12/2004</i></font>

my 390 -- Dusty, 06/12/2004

Collapse <a href=../ForumFE/reply.aspx?ID=21820&Reply=21672><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor21820" onclick="return false;">RE:390 not meant for high RPMs?</a> -- <font color=#0000ff>McQ, <i>06/14/2004</i></font><script type="text/javascript">
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RE:390 not meant for high RPMs? -- McQ, 06/14/2004

Collapse <a href=../ForumFE/reply.aspx?ID=21824&Reply=21672><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor21824" onclick="return false;">RE:390 not meant for high RPMs?</a> -- <font color=#0000ff>Dusty, <i>06/14/2004</i></font><script type="text/javascript">
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RE:390 not meant for high RPMs? -- Dusty, 06/14/2004

Collapse <a href=../ForumFE/reply.aspx?ID=21830&Reply=21672><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor21830" onclick="return false;">RE:390 not meant for high RPMs?</a> -- <font color=#0000ff>McQ, <i>06/15/2004</i></font><script type="text/javascript">
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RE:390 not meant for high RPMs? -- McQ, 06/15/2004

Collapse <a href=../ForumFE/reply.aspx?ID=21831&Reply=21672><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor21831" onclick="return false;">RE:390 not meant for high RPMs?</a> -- <font color=#0000ff>Dusty, <i>06/15/2004</i></font><script type="text/javascript">
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RE:390 not meant for high RPMs? -- Dusty, 06/15/2004

Collapse <a href=../ForumFE/reply.aspx?ID=21832&Reply=21672><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor21832" onclick="return false;">RE:390 not meant for high RPMs?</a> -- <font color=#0000ff>McQ, <i>06/15/2004</i></font><script type="text/javascript">
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RE:390 not meant for high RPMs? -- McQ, 06/15/2004

Collapse <a href=../ForumFE/reply.aspx?ID=21834&Reply=21672><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor21834" onclick="return false;">RE:390 not meant for high RPMs?</a> -- <font color=#0000ff>giacamo, <i>06/15/2004</i></font><script type="text/javascript">
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RE:390 not meant for high RPMs? -- giacamo, 06/15/2004

Collapse <a href=../ForumFE/reply.aspx?ID=21837&Reply=21672><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor21837" onclick="return false;">RE:390 not meant for high RPMs?</a> -- <font color=#0000ff>Dusty, <i>06/15/2004</i></font><script type="text/javascript">
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RE:390 not meant for high RPMs? -- Dusty, 06/15/2004

RE:390 rod bolts -- McQ, 06/16/2004

RE:390 not meant for high RPMs? -- giacamo, 06/17/2004