1968 GMC P/U.

1968 GMC
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JOHN FOX
  • MEMBER
  • 1 POST
My 1 1/2 year old, 305 CI long block, is starting to collect emulsified oil in the rocker arms. This is not being seen on dip stick, or in drained oil.

Is this a intake gasket, or head gasket problem?
Please don't tell me I might have a cracked block!

Thank you
Dec 15, 2006 at 6:14 PM
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MICKEY-D
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 304 POSTS
I believe what you are describing is sort of normal condensation buildup from a poorly vented engine. Make sure the valve cover vent is clean, and the PCV valve is working properly.
Jan 7, 2010 at 11:42 PM
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