delta881966 Oldsmobile Delta 88 for Sale. Classifieds for 1966 Oldsmobile Delta 88. Set an alert to be notified of new listings. 1 vehicle matched. Page 1 of 1. 15 results per page. ... Contact. Phone:This 1979 Oldsmobile Delta 88 Royale Sedan is finished in green over a matching velour interior and is powered by a 350ci V8 paired with a three-speed automatic transmission.