Quote: I don't know what these pumps are you guys run that are so loud. I put a walbro 255 in my brother's rampage. It's it's the hi-pressure version of the walbro 255, and an external in-line unit. It's the highest overall flowing 255 series pump made by walbro. And with the little dinky 2.2 running, I can't even hear the pump running. Someone has got to make a good flowing, low psi pump for carb apps that isn't overly loud. Run it with a return-style regulator and it'll both keep your fuel cold and evacuate any vapors out of your line. And it'll fill your carb bowls right back up before you even turn the key. Seems like a no-brainer to me if you've having evaporation and or vapor lock issues and cannot solve them.
The loud pumps are those holleys, But once the car is running you usually don't hear them over the engine.
