1980 Ford E-350 Econoline Engine: 5.8L V8;EngineVersion: Modified; Position: Air Conditioning and Idler;. 1980 Ford E-350 Econoline Engine: 6.6L V8; Position: Air Conditioning and Idler;. 1981 Ford E-350 Econoline Engine: 5.8L V8; Over 8500 GVW; Position: Air Conditioning and Idler;.