What cylinder is number 3 on 1985 mercury capri 5.0?

If you are standing in front of the car it will be the 3rd one from the front on your left. 1 thru 4 is on the passenger side and 5 thru 8 are on the drivers side. Just in case you are need the firing order it is 1-3-7-2-6-5-4-8.