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Old 07-31-2010, 09:32 AM
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fuel pump

i have a electric fuel pump in my 66 nova 355, its a mister gasket pump i want to put a manual pump in the car can i leave the electric one in and just disconnect it for backup if needed thanks

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Old 07-31-2010, 10:45 AM
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I wouldn`t leave it connected as it will be a restiction to the mechanical pump which may result in little fuel pressure. Leave the electric on, install your mechanical and simply run a bypass fuel line around the electric, then cap off both sides of the electric so no debris can get in the pump. Make sure you pack the mechanical pumps cavity with moly lube or break in lube before installing it.
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Old 07-31-2010, 01:13 PM
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I had an electric pump mounted in my 73 455 Lemans trunk in-line to the mech. pump with an on-off toggle switch and no problems. The car ran fine either way. I turned on the pump at the track and off on the street. Saved my butt once on a road trip when the mech. pump gave it up 150 mi. from home.
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Old 07-31-2010, 01:58 PM
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I have a electric pump mounted near the tank that i only turn on to prime the fuel system if it doesn't want to prime with the mech pump alone. It doesn't restrict it at all and is nice to have incase the mech pump stops working.
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