The Stovebolt Site Forums The Shop Area Engine Shop Engine issues: 1959 Canadian GMC 9400

I took a look inside. There are two stuck exhaust valves, two rusty combustion chambers. The exhaust ports are rusty, intake ports are clean. I’ll pop the valves out, I’m not sure of the next steps, the head is off, engine is still in the frame. The bottom assembly spins pretty well, despite the rusty top of the cylinders.