i found a 1979 camaro today for $700. it has a 305 with a automatic.p/s, p/b bucket seats, spoiler, interior was ok, driver seat was torn up a little. a little body damage. white vinle top. is it worth it? i have a 4 barrel for it and a set of 1.94 1.150 heads off a 350.
The price doesn't sound that bad but it's hard to say without seeing the car.
Most 305 heads have very small combustion chambers, around 58cc I think. You are going to kill what little compression the motor has if you put the 350 heads on it.
Yes the 350 heads have bigger valves, but unless you plan on changing the cam I don't think you will gain anything, and you might kill some of your low end torque. The 305 has a small bore size that shrouds the valves. You could benefit from some port and bowl work though.
Do you have the rest of that 350? If you do why not put it together and bolt it place of the 305? There is no replacement for displacement!
Don't know for sure on the compression, probably somewhere around 8:1. Go to your local parts store and browse through the Chilton's manuals to find out.
I changed the cam in a 77 camaro I had in high school with the engine in the car. Pulled the radiator and loosened the AC condenser to tilt it out of the way. I guess a 79 is the same.