[Magoo]

Shane your stock block can take most anything that 2.2 has to throw at it. There are plenty of guys running 18-20lbs making 620+ rwhp throught the stock motor on pump gas and having the motor live a long life. You just need to make sure you have enough injector, pumps, etc to support the power. Obviously you're not going to be able to maximize that kind of boost with pump gas as the timing is going to have to be turned down a bit to prevent detonation. You could also buy cases of torco to mix in with your pump gas to give you a little safety margin.