I rebuilt my 3.0 recently and got it bored .030 over w/ ross pistons for an 8:1 compression. When I got on it a little bit it would blow oil through the exhaust.... but only after I was done accelerating and slowed the engine down. It was bad at first when I started to get it (800-900 miles). Now that I have around 1,500 miles on it, I can get it up stronger into boost and I won't get the small oil cloud through the exhaust anymore. Now I only slightly get a smell on a very rare occasion. The engine get around 20 inches of vaccum at idle so I didn't think it was a mojor issue. This is the first engine I've rebuilt and was curious if this was normal. Any input would help.