I have a 77 f150 with a 78 351. After my last hunting trip it has started idling rough, when i start it up it runs just fine it doesn't start idling rough untill it warms up and it seems like it might be losing some power. I've also heard a slight knocking now and then. i've replaced the magnetic pickup, cap and rotor, I was also wondering if knows what it is suppost to time at, right now i THINK it is at 10 deg before dead center.
Any help would be great thanks.