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Thread: What's my vacuum
          
   
   

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  1. 02-19-2005 06:52 PM #1
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    Doughnut
    Doughnut is offline CHR Member
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    What's my vacuum

     



    I have a chevy 400. I don't know all the specs on the motor because I just bought it. I put a vacuum guage on it it's very steady at 23 in. is that good ? I left my shop manual at work!

    Thanks
    Ralph
    It's not the miles per gallon. It's the smiles per gallon.
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  3. 02-19-2005 07:01 PM #2
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    dr_bowtie
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    that is very good....
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  4. 02-19-2005 08:12 PM #3
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    Thanks! I wasn't sure

    Thanks again,
    Ralph
    It's not the miles per gallon. It's the smiles per gallon.
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  5. 02-19-2005 10:25 PM #4
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    Does that mean it has a mild cam?
    It's not the miles per gallon. It's the smiles per gallon.
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  6. 02-19-2005 10:36 PM #5
    Jeep_406
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    If you're talking 23 inches at idle I suspect it's a stock cam. With that kind of compression you don't have a lot of overlap between the intake and exhaust.
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  7. 02-20-2005 03:47 PM #6
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    Yea that makes sense. Thankyou for your reply

    Ralph
    It's not the miles per gallon. It's the smiles per gallon.
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  8. 02-20-2005 08:03 PM #7
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    yep she's a stocker....but thats a strong economy cam...I'd stick with it....with that kind of vacuum reading it's showing your engine is pretty efficient......
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  9. 02-21-2005 07:37 PM #8
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    Thanks for asking. I need to get a timing light. What kind do u suggest. Also, what is the timing for a chevy 400?

    Thanks
    Ralph
    It's not the miles per gallon. It's the smiles per gallon.
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