The cam's timing is entirely dependant on the crank's position. Timing is not set in any way if all of the components are not set at a matching degree. The distributor, cams and crank ALL must be at zero or your efforts are wasted. First go and ensure that the mechanical timing is properly set, then set the ignition advance (as detailed in the TSRM). Report back with any additional findings.
EDIT:
Ok, I re-read your post and am a little confused I suppose. Go over the thread linked to below and make sure everything is 100% correctly aligned. If you've removed the cam gears at any point make sure the dowels were installed in the center hole on each cam and likewise on the gears. If you're running adjustable cams dial them to 0? initially.
http://www.toyota-supra.info/forums/...-e-timing.html