1980 Chevrolet Monte Carlo. 1981 Chevrolet Monte Carlo Submodel: Base; Engine: 3.8L V6 Naturally Aspirated; EngineVIN: K; FuelSystem: 2BBL;. Part Type: A/C Accumulator. 1981 Chevrolet Monte Carlo Submodel: Base; Engine: 3.8L V6 Naturally Aspirated; EngineCode: LD5; EngineVIN: A; FuelSystem: 2BBL;.