440 power gains/ aluminum head advantages?
Generally, if the cam is too big for the intended use, advancing the cam can claw back some lost low end which is the usual result of the 'bigger is better' syndrome.
The other extreme, the cam is too small, retarding it can give a little more top end, 'little' being the operative word. Dozens of exceptions apply. That is why it is pretty useless trying to get a cam dialled in to the Nth degree, unless it is duplicating an exact, known combination.
Generally, if the cam is too big for the intended use, advancing the cam can claw back some lost low end which is the usual result of the 'bigger is better' syndrome.
The other extreme, the cam is too small, retarding it can give a little more top end, 'little' being the operative word. Dozens of exceptions apply. That is why it is pretty useless trying to get a cam dialled in to the Nth degree, unless it is duplicating an exact, known combination.