did a cam and engine swap last summer. v6 to v6, 2800. the "newer" engine gets better oil pressure, but for some reason it's blowing motor oil out the tail pipes. (plural, dual exhaust) it only happens over 2100 rpm, and I think it might have fouled the plugs. now that I have some time to get it going again, what could it be that I goofed on? if it was a bad gasket cleaning, then it would be water and antifreeze, right? someone told me it could be the valve rubbers in the top of the engine. any help would be appreciated.