04-26-2008, 04:28 PM
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CC Member
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Join Date: Apr 2007
Cobra Make, Engine: # 757 ERA 427 SC , 482 Al. big block
Posts: 898
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Not Ranked
Another suggestion to check if your secondaries are opening is a trick I learned years ago when racing . Take a piece of vacuum line slightly smaller in diameter than the secondary vacuum shaft ... about 1/8 " long and split it lengthwise and then put it on the shaft up as far up as it will go . Drive the car wide open and then look at the tubing . This will tell you not only if the secondaries are opening , but how far . Think of this as a travel indicator like is on a shock .
I also like all the other suggestions .... something like this can drive you crazy ... or in my case , crazier !!
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