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Old 07-29-2009, 11:57 PM
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Valve Cover Breathers

I'm looking at a set of Dart Aluminum valve covers for my small block Chevy. From what I see they have no breather holes in them and I was wondering if its safe to use them on a street driven car?

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Old 07-30-2009, 04:36 AM
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you need to let the crankcase breath.
no breather and youll find yourself chasing oil leaks etc.
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Old 07-30-2009, 05:12 AM
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Are these easy to drill into aluminum covers? One or two?


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Old 07-30-2009, 06:47 AM
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machine shop can drill them for cheap
you need 2 holes one for PCV on drivers side and 1 for breather or oil fill on passenger side.
make sure you have a baffle on the PCV side or else youll suck oil.
heres how i got mine
PCV to front drivers side.
breather on rear passenger side.
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