So far this is where I am. Motor is still stuck. The evaporust got rid of the rust, so now I can see some pitting in a couple cylinders. Jerry's experienced eyes saw the pitting right away. Also I found that at one point the #6 intake valve hit the #6 piston. Though rusty the current intake valve does not apear to have damage like the piston. From the casting numbers the head apears to not be the original. So maybe the head was changed after the valve strike.
Since I can't get the bell housing off with the engine stuck the next step is do what Jerry recomended and drill the pistons. or. Drain the oil and flip the motor and take it apart on the garage floor.
Attached are pics of #6 piston and valves.
Chris
Rock49 aka C-Rodg work in progress 1956 Chevy 3100 261 engine
