Trans | 1st Gear | 2nd Gear | 3rd Gear | 4th Gear | Reverse |
Powerglide | 1.76/1.82 | 1.00 | --- | --- | 1.76/1.82 |
TH350 | 2.52 | 1.52 | 1.00 | --- | 1.94 |
TH400 | 2.48 | 1.48 | 1.00 | --- | 2.07 |
TH200-4R | 2.74 | 1.57 | 1.00 | 0.67 | 2.06 |
TH700-R4 | 3.06 | 1.62 | 1.00 | 0.70 | 2.29 |
4L80E | 2.43 | 1.49 | 1.00 | 0.75 | 2.07 |
For the 1981 model year, the 200-4R (sometimes called 200R4) was introduced. The components which were prone to failure in the THM200 were improved, and this transmission was used with high-power applications — primarily the Buick Grand National. The 200-4R was configured with several different torque converters and gear ratios depending on the vehicle application.
Unlike the 700R4, most 200-4Rs have a multicase bellhousing for use with Chevrolet, Buick/Olds/Pontiac (BOP), and Cadillac engines. However, 200-4Rs share mounting locations with the TH-400. Since the external dimensions are similar to the TH-350 (overall length, drive shaft yoke spline count/diameter and general size), 200-4Rs are often swapped in place of TH-350s in older vehicles to provide an overdrive gear.
Early models had PRND321 on the cluster, while later models had PRN(D)D21, with the left D identified as the overdrive gear by a square or oval ring.
The THM200-4R can be found in the following vehicles:
The THM200-4R was phased out after 1990; its final usage was in the GM B-body vehicles.