When you order a turn key engine from Skip White Performance it is exactly that. My son and I opened up the crate and carefully put our stage 2-383 stroker into our c/10 Blazer with the bet on how quickly it would start. Well I said the first turn of the key he said the second. It was the second turn of the key that it stayed running at an idle .. it did fire on the first turn though.
As far as the power I can only say be careful shortly after a little drive time we twisted an axle right off! Wish I could show pics of the damage . Far and away Skip delivers the best product for the money. So happy with the engine.