I just bought my Z about 2 months ago, so i am still new to the z and learning about it day by day. I was checked the cam timing on my z , I put the compression stroke at TDC, and by the look of the cam shaft it looks like my cam timing is off but i am not 100% sure. http://s290.photobucket.com/user/coldxwar12/media/Mobile%20Uploads/280z%20photo/0206141718-02.jpg.html?sort=3&o=0 Here some pictures i took