The TH350, short for Turbo Hydra-Matic 350, was a popular three-speed automatic transmission produced by General Motors from 1969 to 1981. Its robust design and relative simplicity led to its widespread use across a vast array of GM vehicles. Pinpointing every single model is impossible due to the sheer number, but we can explore the types of vehicles and model years that commonly featured this transmission.
What Makes the TH350 So Common?
The TH350's popularity stems from several factors: its durability, relatively straightforward design (making it easier and cheaper to repair), and its efficiency for its time. These characteristics made it a cost-effective choice for a wide range of applications, from compact cars to larger trucks and vans.
Which GM Vehicles Used the TH350?
The TH350 was fitted to a broad spectrum of General Motors vehicles, including:
- Chevrolet: Many Chevrolet models, including Chevelles, Camaros, Novas, Impalas, pickups, and vans, incorporated the TH350 across various model years (generally 1969-1981, but some variations extended beyond). Specific model years and trim levels would need to be researched further based on the individual vehicle.
- Pontiac: Similar to Chevrolet, Pontiac vehicles like Firebirds, GTOs, Le Mans, and others utilized the TH350 during this period. Again, precise model year and trim information needs specific model research.
- Oldsmobile: Oldsmobile Cutlasses, 442s, and other models frequently featured the TH350 transmission.
- Buick: Certain Buick models also utilized the TH350 transmission.
- GMC: GMC trucks and vans often used the TH350, leveraging its robust construction for heavy-duty applications.
- Cadillac: In some earlier Cadillac models, the TH350 might have been a factory option.
Important Note: While the above list covers many common applications, the specific models and years vary considerably. To determine if a particular vehicle used a TH350, you'll need to consult a vehicle-specific repair manual, parts catalog, or online resources like a vehicle identification number (VIN) decoder.
How Can I Identify if My Vehicle Has a TH350?
There are several ways to identify if your vehicle has a TH350:
- Check the Identification Tag: The transmission itself typically has an identification tag with the model number.
- Consult a Repair Manual: Your vehicle's repair manual will specify the transmission type.
- Online Resources: Many online forums and resources dedicated to classic car restoration or repair contain databases and information on vehicle specifications.
- Visual Inspection (with caution): While not always reliable, a visual inspection of the transmission housing might reveal markings or features that indicate a TH350.
Warning: Never attempt to perform any work on your vehicle's transmission unless you are properly trained and equipped to do so. Incorrect procedures can lead to serious injury or damage to your vehicle.
Was the TH350 Used in Non-GM Vehicles?
No, the TH350 transmission was specifically manufactured by General Motors and was almost exclusively used in their vehicles.
What are the Common Issues with TH350 Transmissions?
Like any transmission, the TH350 is subject to wear and tear over time. Some common issues include:
- Low Fluid: Regularly checking and maintaining the correct transmission fluid level is essential.
- Worn Clutches and Bands: These components are subject to wear and may need replacement.
- Problems with the Valve Body: Internal valve body issues can affect shifting performance.
This information provides a comprehensive overview. However, always consult reliable resources specific to the vehicle in question for definitive information regarding its transmission. Remember, working on automotive transmissions requires expertise and caution.
