General Motors must have bought up the entire world's supply of blue velour around this time, because you'll see this stuff in just about every car they made for the following decade or so.
By this time, GM was doing a lot of mixing-and-matching with engines from its various divisions, which meant you could buy an Oldsmobile 88 with a Chevrolet 350 V8 engine, a Chevrolet Monza with a Buick 231 V6 engine, or— as in this case— a Buick Electra with an Oldsmobile 350 V8 engine. Do you want to know how many horses this engine delivered to this 3,631-pound car?
155 horsepower out of 5.7 liters of engine displacement. Times were tough during the Malaise Era.