The 360 is the largest of the LA small blocks, introduced for 1971 to fill the gap between the 318 and the soon-to-be-rationalized big-block lineup. Period 1971 rating: 255 hp gross / 175 hp net (the year SAE net ratings were standardized). It became one of the longest-lived V8s in Chrysler history, soldiering through to the late 1990s in Magnum form behind multi-port injection.
For plenum decode purposes, the 360 shows up in 1971-on Coronet, Charger, and 'Cuda/Challenger sheets where the 340 had previously lived; on B-body trucks; and in late-spec 1974 cars where Net ratings make the on-paper power look small but the engine itself remained robust.