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82 GT 05-11-2005 07:39 PM
vacuum readings
 
Tonight I hooked up a vacuum gauge on my engine.
When the car was at operating temp, the needle bounced between 14-15. I know the needle should be steady but what does the bouncing indicate?
What other tests can I do with the vacuum gauge that will tell me different things about my engine?
FIW, my cam specs are 274*/284* .519/.523 lift 110 LSA

Dark_5.0 05-11-2005 08:43 PM
Re: vacuum readings
 
Lopey idle equals bouncing needle. Mine does the same thing.

HotRoddin 05-12-2005 03:35 AM
Re: vacuum readings
 
Quote:
Originally Posted by Dark_5.0
Lopey idle equals bouncing needle. Mine does the same thing.
Yep, the more overlap, the more the tendency to bounce.

Rod

Rev 05-12-2005 02:09 PM
Re: vacuum readings
 
I'm surprised you can get 14-15 with that cam. With my 268/274 I get about 10 in. HG at 700 rpm idle.

Rev


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