How much oil

50 pass on motor. the evac is at a 45 to the collectors with about 6-7" from the end. 7qts oil i'm thinking there is to much oil in the motor. i never had run a dipstick untill just recently when i changed the oil ii had been putting in 6qts. it took 7 1/2 to fill it to the full mark. it is a factory bb dipstick. thanks for input.