TDC has nothing to do with an engine being two or four stroke. TDC is when the piston is at the Top Dead Center, and that will happen twice for each full four stroke cycle.
How To Find Top Dead Center On A Chevy 327?
Mar 01, 2009
21 Replies
I call it TDC when the piston is at the top of its stroke. The question that was asked was not about how the crank aligns with the camshaft. To determine where TDC is on the crankshaft you don't need to know how the cam is oriented.
For all I know the person asking the question hasn't even installed the camshaft yet. He wants to know how to find TDC that's got nothing to do with the camshaft - the camshaft and distributor may be still sitting on his bench.
-jim
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