* TH350 (Turbo Hydra-Matic 350): This was a very popular automatic transmission used with Oldsmobile 307s. It's a three-speed automatic.
* TH400 (Turbo Hydra-Matic 400): A more heavy-duty three-speed automatic also frequently paired with the 307, though perhaps less common than the TH350.
* Powerglide: An older two-speed automatic, less common in 307 applications but possible, especially in older vehicles.
* Various manual transmissions: Oldsmobiles used various manual transmissions with their 307s over the years, but identifying the correct one requires knowing the specific vehicle model and year. These will vary significantly in bolt pattern and other specifics.
To determine the correct transmission, you must know the following:
* Year of the 307 Oldsmobile engine: This drastically narrows down the possibilities.
* Year and model of the vehicle: This helps determine what transmissions were originally offered as factory options.
* Transmission type (automatic or manual): This is fundamental to finding compatible options.
With this information, you can consult a parts catalog, a repair manual specific to your vehicle, or online resources dedicated to Oldsmobile parts and specifications. Using the vehicle's year, make and model is the best approach; relying solely on the engine alone may not be sufficient to guarantee a proper fit.