How can I make my 350 Chevy go faster than Ninety before the rev limiter hits 5200 rpm?

Best thing to do, is change the gear ratio in the axle. Depending on what gear ratio you have now, go to a lower numerical axle ratio. For instance, if you have a 3.73 gear ratio now, try using a 3.55, or 3.23. You will be going faster, before the engine hits the chip.