Originally Posted by RunNgun

The only other potential "old wives tale" might have to due with failing to stress the components of the engine during break-in so they mold with proper load bearing capacity. I'm not a car guy, but I think it's recommended that you redline it at least once in 6th gear after a few thousand miles just to let those parts set in before they sort of conform to weaker driving conditions. Like stretching out a rubber band. Basically if you take 2 identical Z's, one used for racing and the other used for driving to work at 45mph every day, the Z who's seen some track time will outperform the cruiser who's never hit 150mph.

I dunno if any of this is true or not, so feel free to chime in.