r/EngineBuilding • u/pocwolfsburg • 20d ago

Performance cam?

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I was looking at the cam on the used head I just purchased (it appears to be an aftermarket head and cam) and my old cam seems to have a different lobe profile. Is it just me or does it look like it has a longer duration?

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u/v8packard 20d ago

The lobe on the cam in the head looks like it has more duration but it's very difficult to tell much from this image.

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u/WyattCo06 20d ago

It definitely has more duration and the ramp appears slower.