Originally posted by robertchevy:

Holy crap that means your piston is 27 degrees ATDC ( after top dead center) when your spark plug fires.




No, the plugs will still fire at their normal timing respective of the crank.
The exhaust valves will just open and close late. This causes increased lobe overlap and poor cylinder clearing at low RPM.



"Those who cannot remember the past are condemned to repeat it" -George Santayana