The TH350 transmission, also known as the Turbo-Hydramatic 350, is one of the most popular and widely used automatic transmissions ever produced by General Motors. Introduced in 1969, the TH350 quickly earned a reputation for being durable, lightweight, and easy to modify, making it a favorite not only in factory vehicles but also in performance builds and classic car restorations.
In this article, we’ll explore what vehicles came factory-equipped with a TH350 transmission, why it was so popular, and why it remains relevant today.
What Vehicles Have a TH350 Transmission?
What Is the TH350 Transmission?
The TH350 is a 3-speed automatic transmission developed by General Motors. It was designed primarily for rear-wheel-drive vehicles and does not include overdrive. Despite that, its simplicity and strength made it ideal for a wide range of cars and trucks.
Key features of the TH350 include:
- 3 forward gears
- Hydraulic operation (no computer control)
- Lightweight aluminum case
- High torque capability for its size
- Easy maintenance and rebuildability
Because of these qualities, GM used the TH350 extensively throughout the 1970s and early 1980s.
Chevrolet Vehicles With the TH350 Transmission
Many Chevrolet cars and trucks were equipped with the TH350 from the factory. Some of the most well-known examples include:
Chevrolet Cars
- Chevrolet Camaro (1969–1981)
- Chevrolet Chevelle (1969–1977)
- Chevrolet Nova (1969–1979)
- Chevrolet Monte Carlo (1970–1980)
- Chevrolet Malibu (1973–1983)
- Chevrolet Corvette (early 1970s models)
These vehicles often came paired with small-block V8 engines, such as the 305, 327, and 350 cubic inch engines, making the TH350 a perfect match.
Chevrolet Trucks and SUVs
- Chevrolet C10 and K10 pickups
- Chevrolet Blazer (early models)
- Chevrolet Suburban (1970s models)
In trucks, the TH350 was commonly used in half-ton models and light-duty applications.
GMC Vehicles With the TH350 Transmission
Since GMC is closely related to Chevrolet, many GMC vehicles also used the TH350.
Common GMC applications include:
- GMC C1500 and K1500 trucks
- GMC Jimmy
- GMC Suburban
- GMC Vandura vans
These vehicles shared platforms and drivetrains with Chevrolet, making the TH350 a common sight across GM’s lineup.
Pontiac Vehicles With the TH350 Transmission
Pontiac also used the TH350 extensively, especially in performance-oriented models.
Examples include:
- Pontiac Firebird (1970–1981)
- Pontiac LeMans
- Pontiac Grand Prix
- Pontiac Ventura
The TH350 was often paired with Pontiac V8 engines, providing smooth shifting and reliable performance.
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Oldsmobile Vehicles With the TH350 Transmission
Oldsmobile relied heavily on the TH350 during the 1970s.
Vehicles include:
- Oldsmobile Cutlass
- Oldsmobile 442
- Oldsmobile Delta 88
- Oldsmobile Omega
Some Oldsmobile models used a variation of the TH350 known as the TH350-C, which included a lock-up torque converter for improved fuel efficiency.
Buick Vehicles With the TH350 Transmission
Buick also utilized the TH350, especially in mid-size and full-size cars.
Common examples:
- Buick Skylark
- Buick Regal
- Buick Century
- Buick LeSabre
Buick versions often used a “BOP” bellhousing pattern, which is important to know if you’re planning an engine or transmission swap.
Why the TH350 Is Still Popular Today
Even though the TH350 is no longer produced, it remains extremely popular for several reasons:
- Strength: Capable of handling moderate horsepower with upgrades
- Affordability: Parts and rebuild kits are widely available
- Simplicity: No electronics required
- Versatility: Fits many GM engines with minimal modifications
Because of this, the TH350 is commonly used in hot rods, drag cars, muscle car restorations, and off-road builds.
Final Thoughts
The TH350 transmission was used in a wide range of Chevrolet, GMC, Pontiac, Oldsmobile, and Buick vehicles from the late 1960s through the early 1980s. Its combination of reliability, simplicity, and performance made it one of GM’s most successful automatic transmissions.
Whether you’re restoring a classic car, building a performance vehicle, or simply learning about automotive history, the TH350 remains an important and respected transmission in the automotive world.