Reply To: $20 mystery motor.

[frankr]

Those are part numbers, not model numbers. By Scott’s tradition, the prefix is the first model number that particular part was used on. It may have been used a number of successive years. The rest of the number says it is a manifold, or whatever. So 465-xxxxx was first used on a model 465 (1946). Motor itself might be a 1946, 47, 48, or whatever.