1984 Oldsmobile 98 Regency Sedan 307 cid (5.0 L) V8 from North America


The best of the best


Carburetor choke pull-off (the car ran bad on its first start of the day initially).

Cruise control doesn't work (the servos are usually the culprit here).

Rear bumper filler quarters needed to be replaced and painted.

C-pillar opera light bulbs needed replacing.

Power seat motor gear needed replacing (motor worked but the seat didn't move).

Tires didn't look great so I replaced them all.

Tire alignment and balancing done.

Air cleaner intake hose replaced (these always get chewed up over time).

General Comments:

Bought this car in extremely good condition (which inevitably needed a few odds and ends like any other car from the era) for $3,000. Not a bad deal considering that all the power stuff and even the A/C works good.

I have previously owned a 1984 Lincoln Town Car and a 1989 Cadillac Brougham, so some comparisons are inevitable. However, in my opinion, this is a superior car to either of them.

Handling is okay for a car of its size. It drives exactly like the Brougham (under the skin they are the same car), although the steering is a little tighter. However, my previously owned Town Car had superior handling to both of them, but it lacked a lot of the big, substantial feeling that the 98 and Brougham deliver.

Ride quality is extremely good. The 98 seems to ride on a little softer springs because it rides smoother/softer than the Brougham. I'd say it's almost neck and neck with the Town Car (the Town Car was slightly softer).

This is one of the most comfortable cars I've ever owned. It tops my old Cadillac, which is quite a compliment considering that Oldsmobile was essentially a "mid-range" division.

This car uses the same 4-speed THM200-4R transmission that the Brougham uses. A lot of people don't like them because they're not seen as very durable and can't handle a lot of power in their stock form. However, for everyday driving and cruising the highway, it's a fine transmission. You do have to change the fluids a bit more often than usual and can't beat on them for maximum lifespan. They are smooth transmissions and get the job done in my opinion.

This particular model comes with the Olds 307 engine, which a lot of people have mixed feelings about (especially the 1985+ version). On one hand, it's tough as nails and delivers decent fuel economy. On the other hand, power is a bit short (it's only got 140 HP) for an almost 4,500 lb car. The way I see it, the Olds 307 is an OK motor; it delivers everything I need and hasn't left me stranded yet. Being a 1984 model, this has the flat-tappet motor, which will have a tad more oomph over the later motors, despite their power ratings being the same on paper. However, compared to the Ford 302 TBI motor in my old Lincoln, the Olds 307 is noticeably slower (again despite very similar power ratings).

As I previously said, gas mileage isn't bad at all. I get around 15-18 MPG around town and 21-23 MPG on the highway. Some people say the Olds 307s are hard on fuel. In reality, they're not, especially with the overdrive transmission.

Compared to both the Lincoln and Cadillac I've owned previously, the 1984 Olds 98 Regency sedan is the finest of them all. The interior is much better and more elegant than either of the other big luxury cars I've owned and it has a very well-executed exterior style (one of the best looking big luxury cars ever in my opinion). It has the lines and substance of a Cadillac, but without the bling and the gaudiness. Hands down, this is the best car I've ever owned.

Would you buy another car from this manufacturer? Don't Know

Review Date: 15th January, 2016

16th Jan 2016, 14:26

Fantastic review! It comes at a great time because I'm going to go look at an 83 Olds 98 2 door coupe for sale. I've heard that feedback carbs on the 307 can be troublesome due to their complexity and I wonder if this is really a common problem?

Hemmings did a nice review of the 83 Ninety-Eight: http://www.hemmings.com/hcc/stories/2014/01/01/hmn_feature5.html

1984 Oldsmobile 98 Regency 307 from North America


I see 13 second quarter mile times in the future


Power windows got a little sluggish.

Headliner sags badly.

Starting to get a little rusty.

General Comments:

I've always had an appreciation for GM B-Bodies, including this one.

With the 307 it was slow, very slow, that's why I'm putting a 350 Rocket in it.

I'm putting it on the road this spring after the drivability issues (brakes, driveline) are situated, and I will repair or replace other parts that need attention as I drive it (body, paint, performance) to make it like new again.

Would you buy another car from this manufacturer? Yes

Review Date: 19th February, 2010

20th Feb 2010, 11:01

You want that car to run 13 second quarter miles? It can be done very easily. Don't use the 350. Use the 455 and a TH400 trans.

Also go to http://www.mondellotwister.com/; a site which has a vast amount of speed parts for the 455. You can very readily build a 455 with a minimum of 500 HP with the items there.

21st Feb 2010, 22:55

I'm the guy who wrote the review, and I hear ya with the 455; love 'em, but I've got the 350 (Oldsmobile) laying around, and I've got a soft spot for those too, plus that 350 has sentimental value. You know what I mean?

13th Apr 2015, 03:07

The Olds 455 is a solid engine. But it's a huge gas hog, whereas the Olds 307 and 350 really aren't. As much as such a transfer could be nice, I know that it wouldn't be logical at all. For a car like this, I wouldn't bother wasting time and sinking money into engine/trans swaps, just enjoy it the way it was built to be.

Yes, the Olds 307 is a wheezy motor, but it is reliable and gets decent gas mileage for what it is. A great highway cruising engine too, especially with the overdrive. Around town... it's not the best, but it gets the job done.