Overview: How much fuel pump power does your motor need? This time on Engine Masters presented by AMSOIL, we investigate the limits of four budget, mechanical pumps on our very streetable, 500 horse 372 Chevy. Can these budget pumps keep enough pressure and flow to support our power numbers? What about the power that you’re making? If you’re anything like us, this might motivate you to take a second look at your own fuel system.