It sounds wild when you hit the throttle. It is just a bone stock LS1 out of a Camaro. The sound might get some help from headers and a more freeflowing intake and airfilter.
When in idle it doesn't sound much and driving it normally it behaves like any normal car. So its nice to drive around in and if you need it the power is there.
I have an 270 degree offramp where I live and it feels like I can go faster through it now than with the bigblock. One day I will make a video of that.
For those of you that have considered a swap to LS-series engines I can only say GO FOR IT!