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Old 11-15-2025, 07:54 PM
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Now, after driving it for over the recommended number of miles (for the clutch break-in), I started noticing an oil leak. I actually fixed one early on which just happened to be coming from the valve covers. This one, however, is coming from the back of the block. I snugged all the pan bolts, checked the valve covers again, checked the distributor and oil pressure sensor, but it didn’t stop the leaking!! I even saw a drip of oil on the oil pan flange at the back of the motor. At this point I’m trying to give my engine builder the benefit of doubt. He’s forgotten more about the SBC than I’ll ever know!! I sent him a text message but never heard back. I’ll be paying him a visit whenever I get a chance, to get his input.

In what little research I did, I was wondering if I could have a PCV valve that’s not keeping “pace” with the crankcase “pressure”, and allowing it to push oil past the pan gasket?? What’s in there now is just a stock type PCV for a stock engine.



I then found out about the M/E Wagner Dual Flow adjustable PCV valve, which has helped others with this problem. I’ve since ordered and received one, and am in the process of getting it dialed in. They also mentioned that it could even be adjusted so much that it might even pull oil out of the valve covers (depending on the baffling in the covers) and introducing it into the intake manifold under the carburetor. However, my valve covers do have adequate baffling and I'll be keeping my eyes on the plugs for fouling.


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For that problem though, they suggested installing an oil catch can between the PCV valve and the vacuum fitting under the carb. I found one on Amazon (of course!!) and am now in the process of making a bracket to bolt it in and make it look “factory!!” It might be “overkill”, but I don’t want any more issues! I might even invest in 02 sensors to be able to monitor the AFR in real time.

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