Fuel Lines
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Car: 74 Nova prostreet 87 Iroc Z28
Engine: 427 671 blower 350 Built
Transmission: 700R4 both
Axle/Gears: Dana 60 an a 323 posi.
Fuel Lines
There are 3 lines that come from the tank 1 small 1 med. an 1 large does any one know what is what which is fuel which is return a which is the canister. thanks.
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Car: 74 Nova prostreet 87 Iroc Z28
Engine: 427 671 blower 350 Built
Transmission: 700R4 both
Axle/Gears: Dana 60 an a 323 posi.
Re: Fuel Pump Wiring
This is what Iam trying to do . The wires in the car some are gone I had to rewire some of the wires they told me the brown wire goes to the fuel pump ok but where can I pick it up at somewhere in the car the wires on the firewall I said some are gone is there a place where I can find it in the car along the trim by the door I need to wire a new relay to it to get it to work hope I didnt confused you guys Thank yous.
Last edited by mr z28; 03-07-2013 at 12:42 PM. Reason: wrong fourm
#4
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
If your two questions are unrelated, no. If they are related, then I'm thoroughly confused.
Hooking up a relay isn't too hard. If your wiring has been bastardized, it might be best to start from scratch. Is it fair to assume you aren't doing a factory-type computerized set-up?
The factory used a relay that had switched voltage (powered when the ignition is on) to the coil terminal. When the ECM wanted to turn on the fuel pump, it would ground the other side of the coil terminal. The switch terminals of the relay had battery power on one side and the fuel pump on the other.
For a non-computer set-up, do it the same, except have switched power on one side the coil and the other side grounded instead of going to the ECM. When you turn on the ignition, the fuel pump will come on.
Hooking up a relay isn't too hard. If your wiring has been bastardized, it might be best to start from scratch. Is it fair to assume you aren't doing a factory-type computerized set-up?
The factory used a relay that had switched voltage (powered when the ignition is on) to the coil terminal. When the ECM wanted to turn on the fuel pump, it would ground the other side of the coil terminal. The switch terminals of the relay had battery power on one side and the fuel pump on the other.
For a non-computer set-up, do it the same, except have switched power on one side the coil and the other side grounded instead of going to the ECM. When you turn on the ignition, the fuel pump will come on.
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Car: 74 Nova prostreet 87 Iroc Z28
Engine: 427 671 blower 350 Built
Transmission: 700R4 both
Axle/Gears: Dana 60 an a 323 posi.
Re: Fuel Lines
If your two questions are unrelated, no. If they are related, then I'm thoroughly confused.
Hooking up a relay isn't too hard. If your wiring has been bastardized, it might be best to start from scratch. Is it fair to assume you aren't doing a factory-type computerized set-up?
The factory used a relay that had switched voltage (powered when the ignition is on) to the coil terminal. When the ECM wanted to turn on the fuel pump, it would ground the other side of the coil terminal. The switch terminals of the relay had battery power on one side and the fuel pump on the other.
For a non-computer set-up, do it the same, except have switched power on one side the coil and the other side grounded instead of going to the ECM. When you turn on the ignition, the fuel pump will come on.
Hooking up a relay isn't too hard. If your wiring has been bastardized, it might be best to start from scratch. Is it fair to assume you aren't doing a factory-type computerized set-up?
The factory used a relay that had switched voltage (powered when the ignition is on) to the coil terminal. When the ECM wanted to turn on the fuel pump, it would ground the other side of the coil terminal. The switch terminals of the relay had battery power on one side and the fuel pump on the other.
For a non-computer set-up, do it the same, except have switched power on one side the coil and the other side grounded instead of going to the ECM. When you turn on the ignition, the fuel pump will come on.
#6
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
I wouldn't run a hot wire from the ignition power to the fuel pump. It may not hurt with an MSD box because it gets power from the battery (the ignition switch just turns the box on and off), but a relay is still the best way to power an electric fuel pump.
Be sure to include a proper fuse for both the pump and relay.
Be sure to include a proper fuse for both the pump and relay.
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