Yes, the Babbit bearing 216 engine was used through the 1953 model year. The insert-type rods were used in 54-up 235 engines. I don't believe any of the 216's had inserts, with the possible exception of some of the 53 models. 53 was an oddball year, with some features of the later engines being used, such as the short pushrod cover, etc.
Jerry

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