Means at least one of the valves collided with its piston with enough force to damage the tappet, break the camshaft, and at least one camshaft journal cap (clamp as you call).
Terminally dead? Depends on your skills, tools, desire, energy, and finances. Further in you may find bent valves, damaged pistons, bent rods, etc.
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1985 744 gle d24t
1985 745 gle d24t
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