86 camaro motor?

i just bought a 86 camaro with a 2.8 and it had a missfire.
i brought it to a local repair facility and he told me i had a bend valve he concluded by telling me it's not worth fixing and said if i wanted to he could remove the valves on that cylinder and it would make it run better.
i told him to go ahead and i picked it up last monday and it misses worse than it did.
what is wrong with the car????

if you take out the exhaust valve it should cure your rough idle