Plenum was fixed before we dropped motor in which was about 700 miles ago. I guess i will look at it again. Same with coil. I will rplace cap and rotor just to rule it out. I have a round 10" air clraner on it. Could the engine not be getting enough cold air?

"Think of all the Ford owners who will someday want an automobile." John Dodge

57 dodge sierra wagon
03 chrysler 300m
10 dodge charger