When to shift/set shift light?

[Paul Workman]

Experimenting a bit, I discovered that my shift light might be set a little high (or maybe my reaction time is waning...NAH!). I got better times shifting closer to 6800 rpm than at 7200 (shift-light setting).

Short story: I came across an article discussing this very topic. Open for discussion: (what the hey...its below zero in my garage and there's snow and salt on the roads! I'm going crazy!)
Anywayz... author - a physics guru - recommended shifting up at the point where the descending engine power in the lower gear is equal to the ascending power in the next higher gear, i.e., maintaining MAX AVERAGE ENGINE POWER** was the drift.

**except in one case where wheel torque after the upshift would result in a reduction of wheel torque in spite of engine torque being higher (due to overdrive gearing, in this case).

The "test mule" in this case is not a ZR-1, but the concepts are transferable, no?

Have a look. (And, in fact I MAYBE do have my shift light set too high...AND NO WISE CRACKS ABOUT OLD AGE AND REACTION TIME!!)

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