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Discussion Starter · #1 ·
Just started up my 3800 series II SC motor in a 91 Cav swap

The motor devolpes an whistle during after a few min. of running
Pulled the dip stick out and the motor vented though the
dip stick tube.

Mod list
3.4 inch pulley, TB spacer, colder plugs, colder T-stat, Ram air, 3 inch exhaust and DP, DHP ECM

any help
 

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Either your PCV system is blocked or you have a vacuum leak ( broken gasket, missing screws in lower intake manifold, etc. ).
 

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Is your throttle body spacer custom?
Does it seal the PCV inlet with RTV or anything?

Your PCV inlet tract is blocked somewhere, you just need to figure out where, or just get a breather.

Mat
 

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Discussion Starter · #5 ·
Yep the glue or gasket maker that the sent me squezzed into the holes for the pvc

thanks for giving me a place to start
 

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make sure theres an o-ring on the PCV valve, it will do that if its missing
 
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