When is it too much power for the street?

To much power is when you leave your tranny or rearend at the stop light, but in reality thats still just to much for a given combo..

You mean like this? [ame="https://youtu.be/099douUPsOE"]https://youtu.be/099douUPsOE[/ame]

I warn you, turn your speakers down.

There's a guy local here who ran drag week last year, posted a 7.70, street legal. Dyoned a hair (as in 30hp under) 2000 horse at the tire.

Power like many things, is subjective.