The rods were Probe 5140 steel. There was NO valve float. There was 270 plus pounds of seat pressure, it pulled insanely hard all the way, never laying over to lack of valve train, it was definatly the chip it was bounsing off.

It's apart at the machine shop now, it sheered the cam pin and spun the number two rod bearing, I don't know what order this happened in, but I imagine the spun bearing happened first.

The theroy is: we were loosing oil pressure at the end of our runs and didn't know it, we have a guage and no light on the oil pressure.

The machinest told me he had a guy grenede three big inch Windsor drag motors to lack of oil at the end of his runs, once he installed a accumulator
he has had no more problems.

What do you guys think?