How much horsepower in a 350 engine with domed 11-1 pistons?

The horsepower of a 350 engine with domed 11:1 pistons can vary significantly based on various factors such as the engine's configuration, intake and exhaust systems, and tuning. Generally, a stock 350 engine produces around 250-300 horsepower, but with high-compression 11:1 pistons and proper modifications, it can potentially reach 400-450 horsepower or more. To achieve optimal performance, it's essential to consider the entire engine setup, including the camshaft, carburetor, and ignition system.