I own a 1993 stock Z28 LT1 w/120,000 miles. Well kept car. One day I was driving and I felt the engine "Hiccup" then smelled oil and saw grey smoke coming from under the passenger side of the car. I got out and looked only to find oil dripping off of the passenger side of the back of the engine and exhaust. The funny part is after letting it set awhile, it wont do it until its at operating temp. Then it frequently cuts out and blows oil. Anyone experience this before? Please reply.