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how quiet (or noisy) are the fuel pumps that come with the kit?



Noisy enough to hear if you have a quiet exhaust. If outside the tank, I recommend insulating the mount.



can an inside the tank pump be used? how about using a stock GM efi pump?



Any one know if you can mount the "kit" pump in the tank? I have the 307502 kit.

Thanks,

64.............



the pump that comes in the kit can only be externally mounted.

I have a full TTI exhaust system on my car and can only hear the rail mount pump that comes in the kit when the car is not running , in contrast the Holley blue pump I used to have on the car I could hear all the time.

The pump that comes in the kit does have an insulating sleeve and rubber coated mounts.