Help! Need 5.0 Engine bolt sizes

[tcf26]

Okay I need the bolt sizes for the bellhousing to bolt to the block on a 96 5.0 Explorer engine, and I need the bolt sizes also for the Exhaust manifold, The timing Chain cover and the upper intake to bolt to the lower intake. Also if anyone know where I can get online engine diagrams that would be a great help as well. I thought the Bellhousing bolts were 3/8 but they do not hold for some reason. They thread in but just keep popping when trying to tighten.

 

[tcf26]

No one has put their block on an engine stand?? Anyone?? I just need the size of bolt to put the block on the stand and 3/8 is not holding.