Engine Identification Needed

Hello The following is 1990 sierra that I am interested in buying as a runner, can someple please help me identifty it's engine / specs

Regards
Tim

http://hosting.satlan.com/~tim/sv300038.jpg

send me engine code ,-see what i can do.

All I have to go on is that photo, owner sounds like a older guy who doesn't know things like engine codes

Regards
Tim

righto--send your email addy and will send info on mech ident.