In 1975 the Arab Oil Embargo was in full swing, and Chevrolet standardised on their smaller 350ci V8 as standard equipment for all Caprice models (except that Station Wagon).
Except California - who received a 4-barrel Carb. (Chevrolet made things difficult for themselves, didn't they?)
With the standard 2-barrel carburettor, the 350 made only 145hp (109kW). With the 4-barrel, 155hp (116kW).
You could option a 400ci, or a 454ci (except in California).
GM's "High Energy" ignition system and Radial tyres were standard.