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blown Head gasket plus!!

Discussion in 'The Hokey Ass Message Board' started by Jimv, Jun 11, 2012.

  1. Jimv
    Joined: Dec 5, 2001
    Posts: 2,924


    It seem that i blew a head gasket on saturday , but i made it home ok, I check compression & i had zip in #6.I pulled the head & found what is a crack in the cylinder head on the upper part of the part between the cylinders( see pics).It looks as though its been there a long time & it finally worked its way thru the gasket.
    I've seen flattys running with alot worse cracks but i'm not too cool on running it again.Its not in the combustion chamber at all.
    what do you all think ?
    Also what happen to "Mortec"? is there another site to get ID casting numbers? My buddy has a set of heads but i want to make sure they'll work.There off of a mid 70s 350, mines a 400.
    PS can't anyone "decode" these numbers?

    Attached Files:

  2. scrap that's a boat anchor.
  3. I wouldn't risk using a cracked small block chevy head unless it was a rare one. Too easy to find a replacement. IMO
  4. squirrel
    Joined: Sep 23, 2004
    Posts: 48,300


    882 head. made Dec 22 1977

    333882 70-80 1.94/1.50 150-180 76CC Chambers
    Intake flow 137.2 CFM
    Exhaust flow 95.4 CFM

    Joined: Nov 10, 2005
    Posts: 846

    from Holly

    X-2.. any 4-bbl 882 will replace it. Drill it for 400 steam holes. 882's are notorious crackers..
  6. Jimv
    Joined: Dec 5, 2001
    Posts: 2,924


    can anyone post were to drill the heads?
  7. drptop70ss
    Joined: May 31, 2010
    Posts: 1,172

    from NY

    lay a 400SB head gasket on the head and you will see where to drill the holes.
  8. One Finger John
    Joined: Mar 18, 2009
    Posts: 459

    One Finger John

    Do you drill straight down or at an angle?
  9. whiskerz
    Joined: Jul 7, 2011
    Posts: 148

    from Ga.

    drill straight in.
  10. Thirtycoup
    Joined: Jul 21, 2002
    Posts: 1,198


    Squirrell, any idea who assembled those heads so we can "pay him a visit" if ya know what I mean?? LOL Holy crap, you got waaaaay too much free time on your hands man!! :D
  11. Not that hard to do, its all inside that electronic doohickey you're using. :rolleyes:

    Head Guide

    Chevy cylinder head Identification - Small block casting numbers
  12. Jimv
    Joined: Dec 5, 2001
    Posts: 2,924


    Do i have to use a drill press? Or can i just wing it with a hand drill?

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