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If you are referring to the position of peak cylinder pressure, then the answer is, it depends on a lot of different factors and is only a generalisation. Cam timing, Rod to Stroke ratio, combustion speed and many other things come into play that affect the torque generated.
This is why you are learning to tune on a dyno, where you can measure the torque directly produced at the wheels, and and adjust ignition timing to produce the best possible torque.
Cheers,
Matt
You can't measure the actual location of peak pressure without cylinder pressure sensors, and they cost a lot of money.
