1971 Ford F-250 Engine: 3.9L L6; without 65 Amp Alternator; Position: Fan and Alternator;. 1971 Ford F-250 Engine: 4.9L L6; with Single Belt; Position: Fan and Alternator;. 1970 Ford F-250 Engine: 3.9L L6; w/Power Steering; Position: Fan and Alternator;.
