Okay, looked it up in my '87 CSM:
Transmission-to-engine bolts: 35 lbs.ft.
Mount to transmission support: 25 lbs.ft.
I found that if your using a 1/2" ratchet, if you get the bolt as tight as you can with that, it works out to be right around 35 lbs.ft.
As said, everything has a torque spec, its just not crucial to torque everything. Suspension components, internal engine components like rods, main caps, head bolts, flywheel/flexplate, etc. are crucial pieces to be torqued.
Even the valve cover bolts of a torque spec but its pretty pointless to use a torque wrench on them.
That being said, I did torque my bellhousing bolts but I did it while the engine/trans was out of the car so it was easy enough to do.