[Chevelle-list] Vacum

[Jim & Chris]

I just found the problem .It seems the intake lifter on #7 must have failed causing the push rod to bend like a slight "S" and break off . so now I'm going to take the manifold off to retrieve the lifter and bottom piece of the push rod and look for damage. is there anything else I should do while I have it apart ie.change all the lifters and pusrods ? Thanks again Guy's, Jimmy C.
  ----- Original Message ----- 
  From: Rick Schaefer 
  To: The Chevelle Mailing List 
  Sent: Tuesday, August 14, 2007 9:20 PM
  Subject: Re: [Chevelle-list] Vacum


    I second the blown out header gasket theory.   At least check it before doing a lot of other work.  Its easy to check...Been there, done that, got the T-shirt.


  On 8/14/07, Jim & Chris <colgan at warwick.net> wrote: 
    oil pressure is fine, the tapping noise is comming from what seems to be driver side maybe #7. I'm going to drop the oil and look for particles. thanks, Jimmy C. 
      ----- Original Message ----- 
      From: bad66chevelle454 at aol.com 
      To: chevelle-list at chevelles.net 
      Sent: Tuesday, August 14, 2007 3:18 PM
      Subject: Re: [Chevelle-list] Vacum

       
      How is your oil pressure? 

      I had a knock in my 454...Oil pressure was fine, so I knew it wasnt a rod knock. LONG story short, it flattened out the cam...which is notorious in BBC's from what I hear. I would check your valve lash...if one is really lose, there's your problem. It would most likely be the number 7 or 8 cylinder. 


      -----Original Message-----
      From: Jim & Chris <colgan at warwick.net>
      To: The Chevelle Mailing List < chevelle-list at chevelles.net>
      Sent: Tue, 14 Aug 2007 11:59 am
      Subject: [Chevelle-list] Vacum

       
      I am  finally getting back to my Chevelle , rookie question but here goes. which is the best port to measure the vacuum and what should the vacuum be ? I have a knock and its not running on all cylinders . The motor is a 454ci , with a stock rebuild with a mild cam. 915 miles after rebuild..with a few hard ones squeezed in. Thanks for any help, Jimmy C. 

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  -- 
  Rick Schaefer
  72 TPI El Camino

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