How much hp does a 1968 430 buick engine has?

The horsepower of a 1968 Buick 430 engine varied depending on the specific application (car model and options). There wasn't a single horsepower rating. However, it generally ranged from approximately 290 to 360 horsepower. To know the exact horsepower for a particular 1968 Buick with a 430, you would need to consult the vehicle's original documentation or a Buick parts catalog for that year.