URGENT: Transimission Trouble

[black heartbeat]

ok I finally found a way to get my car up on jackstands, I have everything disconnected, I 'm still on a slight incline and I cannot get the transmission out of the trans am, my father and I pulled for a half hour tried different angles with the 3 ton floor jack and two people pulling at one time cant get it to budge! I've pulled transmissions at school but it was always on a lift of on a stand and never when I only have maybe a foot at the most of space to work in. I cannot get this thing to budge. Any ideas?