Ford F-100, F-150, F-250, F-350
I swapped out the 97 4.6 and put in one from a 1999 lincoln town car. I used my intake, timing cover, knock sensor, pulleys, etc. when i did. It has had pinging under a load every since. I took it to a ford dealer and they couldn't figure it out either. They said I could try using the intake...