He answered back. It is a 1978 Firebird engine. That would make it a 3.8 231 buick engine which was the base engine for the Firebird. Formula stepped up to the 305 Chevy.

88 Raider- sitting on a full size Chevy frame with 35.5x11.50x16 Dyna Torque II tractors
89 Montero- stock 2.6 M/T 30-9.50 BFG all terrains on American Racing Wheels
99 2500 Ram- 285-75-16 Uniroyal all terrains,straight pipes with no cat (yes its loud)