#1 on cap but ya gotta be at TDC #1
pull spark plug out on #1 cyl. (driver side front) hold your finger over the hole and have someone bump the starter till ya feel compression, now line the balancer mark up to 0 on the tab, your now at TDC#1 index the distributer rotor to point to # 1 on the cap and it should run, then set timing to specs......