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Old 08-11-2012, 11:51 PM
johnaiello johnaiello is offline
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Blown bbc too much crankace pressure

I have a 454 HO crate motor, fresh rebuild chrome moly rings with 24 thousand ring gap,10/71 with (2) HP 4150 carbs, comp cam blower cam, solid roller lifters, roller rocker, I have moroso evac system from the breathers run down into the headers. I am pushing my dip stick out and pushing oil. when I put my foot in it it will blow the breathers out of the valve covers. Compression is 95lbs per cylinder. cam is a custom blower cam 650 lift not sure duration don't have spec sheet now, 114 separation. 400 turbo, 456 gear. I am stumped I don't want to run it and break any rings or worse. I NEED HELP Why all the pressure. Engine runs great doesn't smoke was broken in properly, plugs look OK still a little lean with 90 jets in back and 86 in front.

Thanks John

Last edited by johnaiello; 08-12-2012 at 12:18 AM.
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