[Bob Carriere]

Next time we need to add your video recorder....particularly the sound track
which ...hopefully... will capture the low frequency rumble..... of the engine running as if out of balance. Rob do you have a provision for plugging a remote microphone into your video recorder.....?

The engine almost felt and sounded as if a large chunk of something was attached (frozen) to the crankshaft and rotating out of round.....

In reviewing an old Chilton manuals last night, I confirmed that the setting should be TDC for the 235.....

Also..... the 1958 GM manuals talks baout a cylinder balance test to determine if one cylinder is being dragged by the rest of the engine. It calls for systematiclly grounding four of the 6 cylinders with the engine running in a particularly paired order..... and recording rpm drop and vacuum drop.....

Something to consider for the next mild day.....

Bob