'86 & '87 Regals were RWD. They didn't get front drive until '88.Elvis said:Mr. 1953 is correct. Come to think of it, since 1967, there haven't been anything BUT FWD Eldorados.
The 79-85 Eldos were the same platform as the Buick Riviera and Olds Toronado. They started with the Olds 350 engine (79-80), followed by the 368ci V8-6-4 (1981), and finished up with the HT4100 (82-85). There was also a very rare 4.1L V6.
From '86-'90 I think they were pretty much a plush version of the Buick Regal, just like the Seville was a plush Buick LeSabre.