Do some research on the RPO L69 305 V8, this engine was inducted into the Small Block Hall of fame by Hot Rod Magazine. It is the only real performance version with a carburetor made with a 305 displacement. In stock form in Monte Carlo SS and Firebirds and Camaro's is made 190 net HP and almost 300 lb-ft of torque. This with all smog gear and catalytic converters in place. You might enjoy reading about this 307 build up as well.