Can anyone tell me what the individual numbers for the model of an engine stand for?
Another resource is to go directly to the manufacturer’s website for the model code number. For example www.lycoming.textron.com/support/publications/keyreprints/maintainence/modelcode that gets you a list of all of the meanings of the prefixes and suffixes. If you’re interested in turbine engine model codes I’d recommend the Encyclopedia of Jet Aircraft Engines.