LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Crankcase pressure

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Old 11-04-2011, 05:34 PM
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Default Crankcase pressure

I just finished my v6 to v8 swap and drove my car for a short time. After about 30 minutes of normal driving i got into it and it runs like a champ. On my way back home it started huffing white smoke and i got very worried. When i got home i opened the hood and realized that the smoke was coming off my headers. My valve cover gasket blew out part of the way and the pcv tube on the passenger side was out of the valve cover as well. Any advice on how to help evac this pressure would be awesome.
Old 11-04-2011, 06:13 PM
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is the engine completely stock/rebuilt/performance built?
pcv valve funtional?
Old 11-04-2011, 06:17 PM
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that's a lot of pressure...on the pass side valve cover try seeing if you have slight suction, or pressure coming out.


you sure the motor is good? that much blow by can't really be fixed by PCV.
Old 11-05-2011, 01:09 PM
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the motor was fine when it was in my z. All i did to it was replace timing chain, water pump and put headers and exhaust on it. Then had it tuned. It runs strong and everything i will check everything today when i get a chance. I really hope i don't have to tear it apart. I am a poor college kid
Old 11-05-2011, 05:18 PM
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that tube should be sucking in and not blowing out.
+1 on checking the PCV

when mine was stuck shut my tube kept comming loose and leaking all the time.



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