[GradeZ28]

the main thing that will "blow" your engine on a dyno is detonation.. this can be caused from a combination of timing too advanced, too much heat, and/or too much compression (which usually will only detonate if its too hot)... make sure you have a fan blowing on the front of your car when you have it dyno'd and "remind" the guy that will be in your car to pay attention to the temp gauge to make sure it doesn't get too hot... if you have nitrous or forced induction, make sure your tune is good and that your running correct plugs