Just had to put this out there!
I bought the engine used from a friend who built it for his 83 Camaro. It's the anemic 305 but has been mildly hopped up. 9.5 pistons, nice (not radical) cam, aluminum intake, new Vortec heads. I added the inexpensive 625cfm carb and off the self shorty headers and side pipes. I paid $600 for the engine with all accessories, fly wheel and clutch. My friend had only put 1200 miles on it. He pulled it to put in an LS engine. I estimate HP to be around 270 at the flywheel. Even so in my 1912lb (with all fluids and fuel) its quick enough to be really fun. It has a nice idle and great throttle response. Surprising, but true.