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Original Message

RE: Now that you have the distributor right..

By Tim - 04/16/2003 11:05:15 PM; IP 24.64.223.204

Hi James

I have the Holley 850 Sq Flange Mechanical secondaries
a 4150

It comes with a baseline 6.5" power valve

Today double checking my timing I had the idle about 900 to 1000 rpm. Without playing with my idle air mixture screws I had 13 to 14 inches vacuum.

Power valves should be 1 to 2 " below the idle vacuum and I think I have that easy.

My baseline jetting is (F) 80 and (R) 78

I have only just broken in the cam and done one oil change. I have not looked at the plugs

Would like to set the idle air mixture screws using my vac gauge looking for optimum idle vac.

Oh yeah I had 36 degrees all in by 2900 rpm

An email from Edelbrock said

"I would set the idle to around 750-850 RPM."

"Anything over 1000 RPM would be to high.
Also timing around 12-14 degrees BTDC with a total of 34-36 all in @ 3000 RPM. "

Tim

part of the reason it seems rich to me James is that the dang sidepipes outlet is under my nose sitting in the car!! LOL
Can't help but smell the exhaust though it is a tad "fat"

TY for the help...appreciate all I can get

This thread, so far...

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Collapse <a href=../ForumFE/reply.aspx?ID=16913&Reply=16913><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor16913" onclick="return false;">428 initial timing optimal??</a> -- <font color=#0000ff>Tim, <i>04/16/2003</i></font><script type="text/javascript">
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428 initial timing optimal?? -- Tim, 04/16/2003

Collapse <a href=../ForumFE/reply.aspx?ID=16914&Reply=16913><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor16914" onclick="return false;">You have left out a few things</a> -- <font color=#0000ff>james, <i>04/16/2003</i></font><script type="text/javascript">
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You have left out a few things -- james, 04/16/2003

Collapse <a href=../ForumFE/reply.aspx?ID=16918&Reply=16913><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor16918" onclick="return false;">RE: You have left out a few things</a> -- <font color=#0000ff>Tim, <i>04/16/2003</i></font><script type="text/javascript">
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RE: You have left out a few things -- Tim, 04/16/2003

Collapse <a href=../ForumFE/reply.aspx?ID=16924&Reply=16913><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor16924" onclick="return false;">Now that you have the distributor right..</a> -- <font color=#0000ff>james, <i>04/16/2003</i></font><script type="text/javascript">
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Now that you have the distributor right.. -- james, 04/16/2003

RE: Now that you have the distributor right.. -- Tim, 04/16/2003

Collapse <a href=../ForumFE/reply.aspx?ID=27228&Reply=16913><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor27228" onclick="return false;">RE: Now that you have the distributor right..</a> -- <font color=#0000ff>Bob P., <i>04/23/2006</i></font><script type="text/javascript">
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RE: Now that you have the distributor right.. -- Bob P., 04/23/2006

Sorry to say, but both types of floats have their problems. [n/m] -- Mr F, 04/23/2006

Initial timing is irrelevant. -- Gerry Proctor, 04/24/2006