Is it possible to repair bent push rods?

when I first got my '65 Valiant, it had a poorly runnin slant in it. On diagnosis, I pulled the valve cover and found two bent pushrods. I took um out and hammered um straight as I could on the back of a vise and stuck um back in and readjusted the valves. It ran slick as a whistle for about a year til I slammed in the 12:1 360.