I stopped by a local machine shop yesterday to pick up a donation for our show this fall. "Hey, what's next on the dyno?" "We have a 496 going on tomorrow afternoon". Ok, I'm in. Chevy Rat motor or not. It should be fun!
I stopped down to the shop. The Rat was on the dyno. It put out almost 600 horse and as much torque. It idled fairly smooth. It will be fun in a 4wd. truck.