How much horsepower does 305 Chevy motor have?

Answer 1

if its an emissions 305 (lots of rubber vacuum lines running every where) normally from the mid 70's to early 80's, that is stock and has the 2 barrel carburator, about 125hp. stock, they are horribly gutless motors, but an intake, carb, cam, and exhaust upgrade makes a lot of difference, also 305's are better torque motors than hp motors, since they have a smaller bore than a 350 but the same amount of stroke. so if your going to build one up, focus on torque not h.p. and you'll be happy with the end result!