trippett

Where should the cam be for TDC I took the head apart without marking it. I have heard that the two front lobes should be pointing straight up, but that makes no sense being as the lobes are on different points on the cam. Where should I put the cam to line up for TDC? Is it possible to get the head 180 degrees off? im doing a head gasket do you guys have any tips for me, this is my first time tearing apart an engine? 1982 280zx l28 engine f54 head Ryan