[Chevelle-list] Vacum

[Dale]

Check the bottom of the lifter for abnormal wear with some others nearby.
It may indicate a bad lobe on the camshaft.  Personally I would not change
all the lifters as they've already taken a seat on their respective lobes;
same with pushrods, no need to replace them if they look alright.

 

Dale McIntosh

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From: chevelle-list-bounces at chevelles.net
[mailto:chevelle-list-bounces at chevelles.net] On Behalf Of Jim & Chris
Sent: Tuesday, August 14, 2007 9:12 PM
To: The Chevelle Mailing List
Subject: Re: [Chevelle-list] Vacum

 

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 <mailto:rickas at gmail.com>  

To: The <mailto:chevelle-list at chevelles.net>  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  <mailto:bad66chevelle454 at aol.com> 

To: chevelle-list at chevelles.net  <mailto: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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