No, GM abandoned the computer controlled carb on the 3.8 V-6 after about 2 years because they could not get it to run right & reliable. They moved to fuel injection afterwards on those cars.

Another source might be any magazines in which Buick may have advertised your car...anything from car mags to National Geographic, Ladies' Home Journal, Playboy, etc. Many ads, especially up into the early '80s, touted fuel economy and gave EPAs figures (your mileage may vary, California mileage will be less).

yea i had to use figures from an 85 vette, mines fully carbed the 85's had some electronic controlled A/F ratio but they got close mpg.

Well, nevermind PMing me, I remembered on my own. There's no MPG figures in my book.

The other way to do it, is go into your doctors waiting room, pick up a couple of 1980 Readers Digests and flip through them until you find the car advertised with the EPA figures in a little box.

Except that half the doctors out there were barely born in 1980...

LOL, my best friend became a doctor. He was born in 1979... I can't raid his office for old magazines though as his specialty is emergency medicine.

-Jay

Jay, what kind of Buick model was it and what engine does it have? I'll get you the info. :)

Thanks, I haven't had time to go to the library. Its a 1981 Buick Regal Limited. Engine code A. It came stock with a 3.8 V6, 2bbl carb, and a 3 speed TH350 tranny.

Thanks again, Jay

Haa haa you beat me to it, I had read your profile and saw that you have a 81 Buick Regal so I looked it up and according to EPA ratings in 1981 it was as follows:
EDIT: This is the only information I found...it did not indicate a Regal Limited so take it for what it's worth. :)

Make: GM Regal
Model ID: B50105
A/C: YES
ACT. Dyno HP: 11.2
City MPG: 18
HWY MPG: 24
AVG MPG: 20

California Smog Info City (grams/mile):
HC: 0.309
CO: 2.15
CO2: 490
NOX: 0.66
California Smog Info HWY:
HC: 0.048
CO: 0.0
CO2:377
NOX: 0.58