Although there's not a lot of information on these, from what I can find, it points to being a GM Target Master "over the counter" crate engine. The last 4 digits (in your case 9800) are the last 4 digits of the GM part number for that particular engine. Another example, VF292800, is another "over the counter" crate engine with "2800" being the last 4 digits of the GM part number for that particular engine. Another example of a Targetmaster engine (p/n 14009800) built in 1985 could have a code stamped as A0198005 (A = January, 01, 9800 = P/N and 5 = 1985).
A lot of these were made in Mexico so it may have "Hencho en Mexico" cast into it somewhere.
Ed