The TH700-R4 automatic overdrive was also available on the base coupe and Berlinetta, but was not available with the L69 H.O. engine in the Z28 for 1983.
The TH700-R4 automatic overdrive was a feature available on certain Chevrolet models, including the base coupe and Berlinetta, but it was not compatible with the high-performance L69 H.O. engine in the Z28 for 1983.