just joined and am having a problem with one of my many fords. I have a 4.9 on the engine stand and have pulled the pan and checked the bearings they all show a lot of copper engine runs good but because of low oil pressure after 20 minutes of driving sprk plugs are clean. can I just put...

1994 ford f150 flareside 4.9I have about about 10 fords and 3 with the 4.9. I have just pulled the motor in the 1994 4.9 and was going to do a underhaul but after checking the main and rod bearing I question without turning crank and boring. all bearings are showing a lot of copper but spark...