Engine model numbers of jet engines are allocated by each manufacturer to their own style.
In contrast piston engines have an industrywide standard across all manufacturers. There are prefix letters which describe the engine layout, and a number suffix which gives the size in cubic inches.
Thus the Pratt & Whitney large engine that went in the Stratocruiser was an R-4360, R for Radial and 4360 for the total cubic inch displacement. If Wright or Lycoming or anyone else had built an equivalent engine it would have had the same designation.
It doesn't tell you anything about developments in the engine or its power (though 1 cu in = 1 hp is a very, very broad approximation).