1990 chevy 2500 2 wheel drive, stalls out on take off

It sounds like fuel starvation. When was the last time you changed the fuel filters? Check and see if they are clogged or not. Have the fuel pressure at the injectors or before checked for proper pressure. Clogged or dirty injectors? If you can, get the injectors checked, cleaned and bad one replaced. Air filter clean after the long winter months. Male sure the timing of the injectors and spark plugs are right on. Start from the easiest and cheapest and advance to the more complex and expensive looking for the issue solution. 87.4% of the time, it is the simple solution that is creating the problems.