Register now to get rid of these ads!

Toasted Cam Bearings

Discussion in 'The Hokey Ass Message Board' started by Shawn M, Nov 11, 2009.

  1. Shawn M
    Joined: Sep 10, 2008
    Posts: 408

    Shawn M
    Member

    This past Sunday an idiot who looks just like me was driving my '68 Buick and overrevved the engine causing a collision between some intake valves and some pistons. Odometer reads 79,500 miles. Upon disassembly I discover a perfect engine other than the aforementioned valve and piston issues which were right foot issues that I intend to address later and the mystery, totally destroyed cam bearings. I had difficulty getting the cam out, they looked like they had been run w/o oil for quite some time. But, the rod and main bearings looked excellent, hardly any wear indicated at all, the crankshaft is perfect, doesn't even need polishing. I hardly noticed any cylinder wear either. I was thinking with the cam bearings in their condition, that I would find other components with some damaged as well. Unless I have a blockage of oil flow between the crank galleries and cam galleries, I know of nothing else that makes sense. The engine is a 430. Any ideas?
     
  2. LADYPK
    Joined: Aug 4, 2009
    Posts: 15

    LADYPK
    Member
    from Washington

    Hi Shawn,

    What side of the bearings were toast. Inside or out. How many miles were on them. Is it stock. (2) Your test is Leave the cam out, Run the oil pump with a drill to see if the oil comes through the galleys. If it does then I would think the oil hole alignment between the bearing and block was bad. UGOTPK
     
  3. 69fury
    Joined: Feb 24, 2009
    Posts: 1,419

    69fury
    Member

    i've heard that later buicks do that (455 mostly). the new blocks have redesigned oil passages- i'm not buick expert by any means though- i just have a friend that races buicks.
     

  4. 430 BB Buick?

    The gang over at the Buick V8 board has the answer.

    www.v8buick.com
     

  5. Shawn M
    Joined: Sep 10, 2008
    Posts: 408

    Shawn M
    Member

    Folks, I appreciate the input. C9, I checked out the v8 buick website and it appears they have seen this many times before. They explain in detail what mods are needed to alleviate the concern. This is my first buick v8 build and it is quickly becoming a learning experience. Thanks again everyone
     

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.