I use to fight one hole summer of vaporlock from fuel warming. Where running multiple pumps at my customer '67 Camaro. 750hp (+1500ftlbs ) 615cid EFI na -motor. Run with two Bosch 040 pumps. Then changed to Walbro 475. Can't drive highway with just one pump, starts to shoot at pipes, need to switch other on too. Then its smooth ride.
Now I'm about to turn it to twin screw charged with 4.7L Kenne Bell and custom intake. Going with Aeromotive mechanic belt pump, same as my Plan Bee.
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