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Old 05-10-2015, 09:57 PM
jhv48 jhv48 is offline
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Cobra Make, Engine: SPF 2932 with 438 Lykins Motorsports engine. Previous owner of FFR 5452.
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I believe a Roush 427 SR engine has a 7 quart oil pan. Mine does.

If yours does, than filling it with ten quarts is overfilling it and could result in the symptoms you describe. The excess oil is being churned by the crank and splashed into the pistons overwhelming the rings.
Could be the cause of your crankcase pressure.
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Last edited by jhv48; 05-10-2015 at 10:13 PM..
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