Ron,
This is a nice article, but I disagree with their recommendation to connect
the vacuum advance to the "tuned port", which is located above the
carburetor butterflies. If connected here, the vacuum at idle and low
throttle is zero and increases progressively as the throttle opens. This is
how vacuum advances were hooked up years ago. What we need now on our motors
is more advance at idle, and less advance as we apply throttle. This is
especially true for high duration cams. To get this functionality, you
should hook the vacuum line to the carburetor below the butterflies, or
directly to the intake manifold. For an article that discusses this, follow
this link.
http://www.centuryperformance.com/timing.asp
Bob
-----Original Message-----
From: owner-tigers@autox.team.net [mailto:owner-tigers@autox.team.net] On
Behalf Of Ron Fraser
Sent: Wednesday, December 22, 2004 7:57 AM
To: 'Theodore Brown'; tigers@autox.team.net
Subject: RE: Fuel mileage, distributors, etc.
Theo
I refer you to one of my favorite articles; " Timing is Everything
".
http://www.fordmuscle.com/archives/2000/03/timing/index.shtml
This will guide you through the workings of the distributor and it will give
you a total advance vs compression ratio.
Excellent article, IMO.
Ron Fraser
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