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Old 09-10-2005, 10:21 AM
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Lifter Valley

My new GM Performance block showed up this week and I noticed that in the front of the engine at the oil drain back holes that they are not level so oil can flow out and back into the crankcase. Is this normal I didn't even check my old block before asking there is a lot of stuff on it? I know in the rear I should grind them open a little more.

Should I leave it as it is or get out my die grinder and open up the flow
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