I have a 73 challenger with a 440 and a single plane intake the engine turns over but really rough. I don’t really have time too take the spark plugs out so I’m wondering if I can just pour some oil down the intake manifold and turn the motor over to get it in the cylanders
I wouldn’t, if too much goes into one cylinder you could hydrolock it. You can use 2 cycle gas and try starting it, will provide some lubrication to the rings.