drop the oil pump and rotate the shaft 180*. take of the distributor cap before you do and note the exact direction it points to you can get it to exactly 180*. put some cardboard down, it's messy.
EDIT - before you do, put your engine at TDC, pop the valve cover off (to verify that the cam is at TDC as well, both lobes on the #1 cam will be up), and pop off the dist cap. if the rotor is pointing where it would to fire cyl #1, then something else is the problem.