700R4 Transmission Specifications, Identification & Information
The 700R4 transmission is one of the most recognizable and sought-after GM overdrive automatics ever produced. Introduced in 1982, the 700R4 (along with the 200-4R) replaced the older TH350 three-speed transmission. The upgrade was significant — the new 4-speed design added a fuel-saving overdrive gear and improved gear ratios, making highway driving far more efficient.
You’ll find the 700R4 in a wide range of GM vehicles from the 1980s and early 1990s, including the Chevy Blazer, Suburban, Camaro, Corvette, Impala, and many Oldsmobile and GMC models. Its strength, parts availability, and versatility have made it a favorite among classic car owners and performance enthusiasts.
One of the biggest reasons for its popularity is durability. The 700R4 is known for handling daily driving, towing, and even moderate performance use when built correctly. Unlike later transmissions, the 700R4 is not electronically controlled — instead, it uses hydraulic pressure along with a TV (throttle valve) cable to regulate shift timing and feel. In 1991, the electronically controlled 4L60 replaced the 700R4, eventually evolving into the 4L60E series.
700R4 Transmission Specifications Chart
| Name | 700R4 |
| Type | 4-Speed Automatic with Overdrive |
| Applications |
GM Cars & Trucks (1982–1990) Chevy/GMC, Buick, Oldsmobile Blazer, Suburban, Camaro, Corvette, Impala and more |
| Gears | 3 Forward Gears + 1 Overdrive (Approx. 30% OD) |
| Weight | Approx. 170 lbs (dry) |
| Length | 23.5" |
| Gear Ratios |
1st – 3.059 2nd – 1.625 3rd – 1.000 4th – 0.696 Reverse – 2.294 |
| Case Material | Aluminum |
| Input Spline Count |
1982–1984: 27-spline 1984+ : 30-spline |
| Fluid Capacity | Approx. 11 Quarts |
| Recommended Fluid | DEXRON VI |
| Max Torque (Stock) | Around 350 Nm (varies by application) |
Why the 700R4 Remains Popular Today
The 700R4 continues to be a go-to choice for classic car restorations, hot rods, and daily-driven vintage vehicles. Its mechanical (non-electronic) design makes it simple to install, tune, and maintain — especially for carbureted engines. With proper upgrades, the 700R4 becomes even stronger and can handle higher horsepower builds reliably.
If you're swapping a 700R4 into a classic vehicle, always ensure the TV cable is properly adjusted. Incorrect TV settings can lead to rapid transmission failure, harsh shifts, or slipping. A quality rebuild and upgraded internal components can significantly extend transmission life.
Need a Fully Tested, Upgraded 700R4?
We build high-quality, USA-assembled 700R4 transmissions that are fully tested, upgraded, and ready for installation. Whether you're restoring a classic car, building a cruiser, or preparing a performance project, we can supply a 700R4 that matches your setup.
Looking for a conversion package instead? Check out our:
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