How much horsepower does a stock 1979 Chevy 305 have?

A stock 1979 Chevy 305 small-block V8 had a horsepower rating that varied slightly depending on the application (what vehicle it was in and the specific options). However, it generally ranged from 130 to 170 horsepower. You'll need to look at the specific vehicle's documentation (owner's manual, build sheet, etc.) to find the exact horsepower for that particular engine.