Assuming "hold" means compatible, yes
turbo 350, TH350. but its a BOP TH350 not a chevy, same tranny, different mounting holes
probably a th350.
The bolt pattern on Chevy engines is unique. There are TH350 transmissions with both the Chevy bolt pattern and the BOP (Buick, Olds, Pontiac) pattern, but they are becoming somewhat rare.
As long as the TH350 is from a Chevy....yes.
YES As long as the flexplate is the same size or has additional mounting holes. To add to this answer in depth. i changed from a 350 to a 454. the 454 had a th400 transmission and the 350 had a th350 transmission. (This was a 4x4 so we had to use the th350 transmission because it had a married transfer case)the th400 flywheel did NOT match the th350 torque converter. We installed the th400 converter and it fit perfect in the th350 transmission. I would make sure torque converter bolts to flywheel and as well fits into trasmission before attempting to install in vehicle. It is a huge pain to make the swap half way through the install.
Automatics would include th350, th400, or the 700r4, if you want a overdrive.
Th350 is a three speed transmission, where as the 700r4 is a four speed automatic fourth gear being an overdrive.
The Turbo-Hydramatic 350 (TH350) was standard and I think the only one available. 3 Speed automatic.
Most people with this motor go with a th350, th700r4, or a th200r4. The th350 does not have an overdrive gear, so if your driving on the highway, your gas milage will suffer.
Nope.
A 350 Oldsmobile engine has a different bolt pattern than the Chevrolet engine. The 350 Olds and 350 Pontiac engines have the same bolt pattern. The 350 Chevrolet and the 350 Buick engines have the same bolt pattern. Unless you have a dual bolt pattern transmission (there are some out there) in that Chevy, the Olds engine won't bolt into the Chevy transmission.
None, TH stands for turbo-hydromatic, hence th350 or 350 turbo.