The turbo 400 transmition is widely used, it just depends on what motor it was originally bolted to.
Some Pontiacs came from the factory with Chevy engines. If this is the case on your 79 firebird, then the transmission will bolt up to a 350 Chevy. If the car came with a Pontiac engine, then the bolt pattern is different and would not bolt up.
Yes, assuming the TH350 has the Buick-Olds-Pontiac bolt pattern. A Chevy TH350 will also bolt up, but you will need an adapter from B&M or another supplier.
only a Buick, olds or Pontiac engine will bolt to a Pontiac tranny as Chevy blocks have a different bolt pattern.
Yes,
no
yes and no yes in that it can be made to fit no in that a Chevy transmission has a different bolt pattern than Oldsmobile's, Buick's, and Pontiac's. the motor mounts are also probably going to be different. However you can change the motor mounts and there are companies that make adapters to use a Chevy transmission with a Oldsmobile, Buick, or Pontiac engine. I have seen an adapter to use a ford transmission with a Chevy engine.
mostly any "old school' GM transmission that has the (BOP) bolt pattern will fit the 307 Olds motor. these (BOP) transmission have extra bolts holes so you can bolt to a Chevy and bucik, Pontiac, and Oldsmobile *** you can buy an adapter plate and bolt any engine you want to a 307***
Yes.
YES.
No it will not.
No, the tranny has to be out of a olds, Pontiac, or Buick to bolt up to a Pontiac engine.
Chevy, Buick and Cadillac shared the same bolt pattern as did Oldsmobile and Pontiac but, some transmissions had two bolt patterns to fit all GM blocks. If your Chevy Turbo 350 transmission has the dual pattern it will fit the Oldsmobile engine, if not it won't fit.