Forged (or machined) steel cams need to run steel or bronze distributor gears. A steel cam will machine away the teeth of a cast iron gear, not cause the teeth to break. Check the undamaged teeth (if any) on that broken gear and look to see if they're heavily worn. If not, something has locked up either the distributor shaft or the oil pump. I'm betting on the pump. However, something in the centrifugal advance system under the breaker plate could have come adrift and jammed the distributor.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
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