So I am cruising up a hill on the highway near my house and suddenly I hear a big bang from under the hood. then a rapping noise and it seems like the engine is only firing on 7 cylinders. Fearing the worst I took the valve covers and
oil pan off. I find nothing wrong so far. the rods and pistons look ok from below and the valve train looks ok from above. I removed all of the rockers and there appears to be no damage there. Could I have lost a lifter?? I plan to pull the webers tonight and see what lays beneath but if anyone has any ideas at things to look at I would be much appreciative. I have built a few engines, this is my first one to go kaboom.