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 <[EMAIL PROTECTED]> 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:* [EMAIL PROTECTED] > *To:* chevelle-list@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 <[EMAIL PROTECTED]> > To: The Chevelle Mailing List <chevelle-list@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.* > ------------------------------ > AOL now offers free email to everyone. Find out more about what's free > from AOL at *AOL.com* <http://www.aol.com/?ncid=AOLAOF00020000000437>. > > > -- Rick Schaefer 72 TPI El Camino
