Television Squad Cars

A 383 super commando was Adam-12 1969 powerplant.

From IMDB:
The patrol cars in the series were not real LAPD cruisers but were purchased by Universal from Chrysler Corporation and American Motors, and outfitted by the prop department to LAPD cruiser specs. In order, the cars were: 1: 1967 Plymouth Belvedere 383 V8 ("pilot" only); 2: 1968 Plymouth Belvedere 383 V8 (season one); 3: 1969 Plymouth Belvedere 383 V8 (season two); 4: 1971 Plymouth Satellite 383 V8 (season three); 5: 1972 and 1973 AMC Matador 401 V8 (starting in season four).