What motor is better to run in a 84 silverado 305 with a 488 cam or 350 vortec?

For an '84 Silverado, a 350 Vortec engine would generally be a better choice compared to the 305 with a 488 cam. The 350 Vortec offers more displacement, which translates to greater torque and horsepower potential, making it more suitable for various driving conditions. Additionally, the Vortec heads provide improved airflow and efficiency, enhancing overall performance. If you're looking for a balance of power and reliability, the 350 Vortec is likely the superior option.