Heads dont' match....

Discussion in 'Trucks and Trailers' started by cutnitclose, Apr 18, 2004.

  1. What are the symptoms if a set of heads don't match on a 400 small block?
     
  2. xcopterdoc

    xcopterdoc LawnSite Senior Member
    Posts: 752

    can we have a lil background on this one?
     
  3. Metro Lawn

    Metro Lawn LawnSite Silver Member
    Posts: 2,112

    You could find yourself with the same symtoms of bad head gaskets. You may find coolant in the oil as well as smoking from the exhaust.
     
  4. I found out they have matching casting numbers after all... I have a 400 small block tat is acting crazy in my work truck....
     
  5. xcopterdoc

    xcopterdoc LawnSite Senior Member
    Posts: 752

    400's have a nasty habit of cracking between the intake and exhaust valves on the middle 2 cylinders on the left head
     
  6. xcopterdoc

    xcopterdoc LawnSite Senior Member
    Posts: 752

    That would be #3 and #5 cylinders. What is yours doing that is "crazy"?
     

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