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I recently had four different type cams measured on a Performance Trends Cam Analyzer - Stock TT Automatic, Stock TT Manual, JWT 400 and JWT Solid... pretty interesting data since JWT doesn't offer much more than a duration number and max lift to describe their cams while the Nissan numbers in the FSM are about as obscure. I'm tinkering with formatting it to show the timing events relative to crank position, until then here's the raw data in Excel if any of you want to play around with it. One noteworthy item is the intakes all seem to be dual pattern - in other words, one lobe opens minutely earlier than the other lobe and then at about mid lift they are equal. From what I can find on this, it seems to be aimed at inducing swirl into the cylinder by giving one side of the port a jump-start at initiating flow. I'm guessing this data is probably accurate to ±1° so small discrepancies from lobe 1 to lobe 2 might be explained here. Here's a rough graph of all lobes. The X axis is total duration in crankshaft degrees, the Y axis is lift in inches. 
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Lotsa camshaft timing data >>> - 
