That's a bad bitch, but with all that work, you'd think it would make more power. E85, meth, cams, & bolt-ons..That's alot of stuff. Isn't the stock ZL1 650HP? HHP uses a dynojet too..so their numbers don't read low.
Most stock cars are putting down between 550-580 rwhp on a dynojet. The stock 1.7L eaton is a real choke point. A procharger D1SC at the same boost levels picks up over 100HP at the wheels.