305 = :tdown:
They are worthless, and like said above for the cost it especially isnt worth it, 350s are a dime a dozen and can be made fast for very cheap.
Like FASTMOFO said they can be made to scoot pretty good, i know his did back in the day but when he changed to the 350 is was night and day. Mine was decent as well but i didnt waste to much time with it other than bolts-ons.
There are a few guys that are dedicated to wasting their time to prove everyone wrong about 305s, they strapped a turbo on it, another strapped a procharger on it. I know the turbo car has seen 9s, but it will break for sure. The guy in the craigslist ad claiming 400hp? doubtful. $1000 bux is too much for a boat anchor.
Mike