cutnitclose
LawnSite Member
- Location
- Somewhere out there in scrubville..
What are the symptoms if a set of heads don't match on a 400 small block?
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Heads dont' match....
- Thread starter cutnitclose
- Start date
xcopterdoc
LawnSite Senior Member
- Location
- Parkton NC
can we have a lil background on this one?
Metro Lawn
LawnSite Silver Member
- Location
- St. Clair Shores, MI
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.
OP
cutnitclose
LawnSite Member
- Location
- Somewhere out there in scrubville..
- Thread Starter
- #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....
xcopterdoc
LawnSite Senior Member
- Location
- Parkton NC
400's have a nasty habit of cracking between the intake and exhaust valves on the middle 2 cylinders on the left head
xcopterdoc
LawnSite Senior Member
- Location
- Parkton NC
That would be #3 and #5 cylinders. What is yours doing that is "crazy"?