the horsepower on a 1969 Pontiac LeMans with 5.7 350 cu. inch engine?

The horsepower of a 1969 Pontiac LeMans with a 350 cubic inch (5.7 liter) engine varied considerably depending on the specific model and options. There wasn't just one horsepower rating. You could find engines ranging from approximately 255 hp to 325 hp in that year's LeMans with that engine size. The higher horsepower figures were typically associated with performance packages or options like the Ram Air system. To know the exact horsepower of a particular 1969 Pontiac LeMans, you'd need to look at its original build sheet or the data plate.