Thread: Roush 342 Switch to QuickFuel carburetor Vacuum question
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Old 08-28-2012, 01:50 PM
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Cobra Make, Engine: Backdraft 874 solid red Roush 427 small block 515 hp
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Yep, the draft tube was the precursor to the PCV valve.
The PCV is not that bad and may actually help rings seal better.

Why don't you see what Roush says?

Russell
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Last edited by rpatton3; 11-28-2012 at 09:14 AM.. Reason: typo
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