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In street applications, people are usually more open on a
particular grind [how much lift, how much duration] of cam. In racing,
*most* people will tell you the lift, the smart ones will *not* tell you
the duration. Really, the argument that is going on is about the two
sides of the same coin. On turbo race cars you will not find instances
[at least none that I can ever recall] where the cam grinder increased
lift yet left duration alone or decreased it. Drag racing turbo cars
increase profile dramatically, but this is not what you want [unless your
desired power band is 5,500-9,000, or something similarly crazy.
Depending on your desired application, I would venture to say
lift on a blown motor is increased less [proportionally speaking] than is
duration. Not unusual for lift increase to be roughly half [or less] of
duration increase. But, you *must* be specific in your application
before any "rule" applies to this. Eric's application discussed was
rather specific [racing], Scott, your application is a bit cloudier to me.
Be nice kids!