stumble

Mild build 318 when launched at 4500 it falls on face sounds and feels like its running on just a couple cylinders.
I just noticed a slight miss at higher rpm.
On launch when it stumbles it will regain power after backing off gas pedal then pushed to floor takes off at a loss on what it is.
Replaced coil and put on orange box still same results.
Have one cylinder that is a little oily on plug and running lower compression than other 7 by about 30 lbs.
Any ideas.