I was wondering if you can get a Ramp ID (ramp escort ID at Miami airport), if you have been in prison doing hard time for serious crimes in the late 80's.
Please, let me know guys.

What is the title and location of the job? The SIDA zones all require a TSA (FBI) background checks and some felonies are disqualifying, but not all. See the first thread linked below. We have had this discussion here many times before, use the search window at the upper right to locate more discussions. It does not change much as a topic, but this is a pilot forum so obviously most (all) replies have to do with pilot background checks. Certain areas of major airports are called GA (General Aviation) ramps, and some do not comply with TSA-SIDA screening, but most or all do. I do know that some or many smaller airports, namely Class C and D towered airports, will often have zones that are not SIDA- compliant to keep the security fuss to a minimum since airlines are a smaller portion of the total traffic they handle.

Can you be an airline pilot with a felony?

Felony conviction

SIDA and/or sterile area access will depend on what type of felony you were convicted for. If it is one of the 20 deadly crimes for aviation chances are not good.