How much horse power will a S and S intake?

The horsepower increase from an S&S intake can vary significantly based on the specific model and engine setup, but many users report gains in the range of 5 to 15 horsepower. Factors such as the engine's displacement, tuning, and additional modifications also play a crucial role in determining the exact performance improvements. It's best to consult specific dyno results or manufacturer specifications for the most accurate information.