A few timing gear questions

[PC/SR]

TDC is determined by the position of the crank, not the cam. The camshaft timing will be off if the dot in not in the right place. If, as seems to be the consensus, you are off by one tooth,; when your crank is at TDC the valve timing will not quite be where is it supposed to be, I think retarded here. The car will still run, but not well for a stock engine. Heavy duty racers play with retarding and advancing the cam timing depending on what results they want.