I wouldn't think so it'd be possible to generate too much vacuum.  Both my cars (396 and 327) pull about 17/18 at warm idle, 15/16 cruising at steady throttle and jumps to 24/25 range when decelerating.
 
You problems sound like lack of vacuum - bleeding off somewhere.

Dale McIntosh
ACES #1709/TC #92 Gold
67 SS/67 Elky
http://www.dalesplace.com
http://www.team67.com
http://www.midwestchevelles.com

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Craig A. Ellis
Sent: Tuesday, September 03, 2002 8:37 AM
To: Chevelle (E-mail)
Subject: [Chevelle-List] Vacuum problem?

Is it possible to generate too much manifold vacuum and, if so, how does one diagnose the problem and remedy??? My cowl induction has stopped working and my vacuum secondaries appear to be malfunctioning. I'm wondering if the problems are related...
 
CAE

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