Could be a pump problem or broken planetary. Regardless, the transmission will need to be disassembled.
A Chevy 305 is not a transmission it is a motor. If you mean a Chevy turbo 350 then the answer would be 3 different forward speeds and reverse.
turbo 350 or 700r4 turbo 350 or 700r4
The typical turbo 350 has three speeds forward and one reverse.
4l80e
Turbo Hydra-Matic 700.
That should be the 400 turbo.
turbo 350
one of the valves in the valve body may be stuck
Yes, as long as it has the Chevy bolt pattern.
350 turbo automatic
That should be a 4L80E transmission.
Some automatic cars does have Turbo(s).