By 1978 it was possible to find Chevy motors in other GM divisions cars. So you should look close, but there is no mistaking a Buick V8 for a Chevy V8. There was a point where an Olds buyer was trying to sue GM because he got a Chevy motor. After that, GM did not put the Chevrolet sticker on those motors. The GM started saying the motor was a "GM V8". Parts are cheaper for a Chevy V8, but the Buick is a pretty stout motor.
