Changing oil pan gasket

[03BlkZ]

My 70 C10 with a 350 and 3 speed transmission has developed and oil leak from the pan. I decided to try and change it so I bought the 1 piece felpro gasket and went to work. I removed the flywheel cover and the pan bolts. It was obvious at that point that I needed to jack the engine. I cautiously jacked the engine using a 4x4 on the balancer like others have said to do. After taking the mount bolts out and loosening the transmission bellhousing mount bolts I was able to get the engine jacked approximately 2 inches. It still would not come out. I need the front to come up another inch to be able to get the rear of the pan to clear the flywheel. How high do most people jack their engine. I was afraid to take the transmission bellhousing bolts all the way out because what would keep the engine from wanting to lay over. Maybe I am over thinking it. Thoughts?