I recently Purchased a 1980 Oldsmobile cutlass 442 W-30, Or soo it appeared. Not really knowing a whole lot about the vehicle, and with some minor research, I concluded the deal for $1000 dollars would be worth it, even though I know the car needs some work. With that being said, the owner claimed it was a 350/350. The car has all the 442 badging, except for the 442 emblems on the inside of the doors above the pull handle. Also, after the engine quit, (to my luck) and my mechanic has been scratching his head about the actual engine size, contemplating if it is a 403. I have tried to look up the vin, and have been unsuccessful with only one vin decoder site claiming it's a calais with the 350, but not clarifying if it's a 442, W-30. I have also sent a request to GMheritagecenter.com, with the option to pay for that information but haven't had a response. The car is a Canadian Car, purchased in Alberta where I live, and I have contacted the dealerships with no such luck as well. If anyone has any more help/ideas, it would be greatly appreciated.