Done it dozens of times and you CANNOT put the engine and trans in at the same time with a deep pan! You must put the engine in first, then put the bellhousing on, then the trans, there is NO OTHER WAY to do it! The Lakewood bellhousing is part of the issue too, I quit using them in A-Body's 30 years ago! Also, B-Body headers will not fit, unless you have a flame hammer handy. You should have asked a few questions here before trying that combination.
The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.
