2002 Chevrolet Corvette Z06: Dyno Tested
April 26, 2010
I've been wanting to take our long-term 2002 Corvette Z06 to the dyno since day one. A certain detonation issue sort of sidetracked our plans, though, as you really need to avoid full throttle in those circumstances... unless you like engine salad.
But that's all behind us now. We've since been relishing the ability to hoon the Z06, which we've found has an aptitude for powerslides and can slither its rear end on a straight road with nothing more than a third-gear roll-on.
This car certainly feels strong. Always has. Without further ado, here's what we learned at the dyno.
Hit the jump for the dyno chart and photos. And pardon the video quality above, which was done not by our usual crack video team but by some hack with a tempermental and sub-par point-and-shoot.
When new, the Z06's 5.7-liter pushrod V8 churned out 405 horsepower at 6,000 rpm and 400 lb-ft of torque at 4,800 rpm. That's as measured at the crank.
Here's what we found at the wheels of our silver long-termer, as measured on a Dynojet 248 chassis dyno:
The rev limiter intervenes at 6,500 rpm, which is just the same as the engine has long since stopped increasing power at this point. Still, it's worthwhile to shift this car at redline since you'll maximize average power this way.
Peak power of 382 horsepower arrived at 6,200 rpm and its peak of 375 lb-ft of torque was produced at 4,900 rpm. This was the stabilized output achieved after four fourth gear runs on the dyno. A 1% SAE weather correction was applied.
Not bad, eh? When you consider that the driveline saps some 13-15% of the engine's output, I'd say time has been kind to this car when it comes to its ability to turn ol' Dino into heat, noise and forward motivation.
Either that, or all LS6s are similarly stout. Anyone know how well these Dynojet results stack up against other bone stock Z06's with similar miles on the clock?
Jason Kavanagh, Engineering Editor @ 46,013 miles.