Just finished a v6 to v8 swap with blower and cam set up with new fuel pump. Just started today while driving the motor cuts off with no warning. Go to check the fuses and fuel pump fuse blown twice today any ideas guys thank you.

 

What pump and what amp fuse? The aftermarket high flow fuel pumps draw a lot more current than factory pumps.

 

It's an aem pump and fuse is a 20 amp.

 

This is too easy... Volt meter or if you're brave a test light?? What am I missing here? Someone just posted a how to test the pump to ensure no electrical failure there and then the wiring independently.

These trucks use Fuel Pump Relays. Maybe during the higher duty demand on the pump relay, the one that used to support the stock one sufficiently,, now goes into arrest. Swap'em around, (Horn is a good test subject participant), and see if drivability improves. If yes, buy a new relay. If no..., find source of short "blowing fuse?" It could be the pump itself. Check grounds!