[rob]

looking to run the quantum hanger with 450 walbro; will this drop right into a factory fuel tank?

how should I go about upgrading the factory wiring to run this pump?

looking to make 600 to 700 rwhp.

 

[Impetuous]

I would upgrade the wiring with anything over 255. I have an AEM 340 and just ran new wire (10/12ga) directly from the starter solenoid positive point with a good relay (think 30a) and used the factory connection at the back to trigger the pump. Relay is sitting inside rear steel bumper support.

 

[Leadsled Coupe]

What’s a quantum hanger? Sorry I’ve been out of the fuel pump improvements for 15 years and need some education here. I am blown away by the fact they make a 450lph that fits in stock tank/system now. Do these work with stock fuel lines too or does one need to upgrade to larger IDs for a pump this large? Thanks.

 

[rob]

You could find a way to make stock lines work, but likely won’t be big enough on the return. I will run 8an and 6an to aftermarket rails using the quantum.

Quantum 450LPH Fuel Pump Hanger -8AN/-6AN Fittings Ford Mustang 4.6L, 5.0L, + Walbro F90000274 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997

HFP # HFP-AN274 - Quantum 450LPH Fuel Pump Hanger -8AN/-6AN Fittings Ford Mustang 1986-1997 4.6L, 5.0L +Walbro F90000274 - <p style="margin-top: 0; margin-bottom: 0"> <span style="color: rgb(34, 34, 34); font-family: Arial; font-style: normal; font-variant-ligatures: normal; font-variant-caps...

www.highflowfuel.com

 

[Leadsled Coupe]

Ah HA! Thanks that sure provides all the info I needed. Looks great and I see AN lines cleanly adapt here forward.

 

[JFraser27]

Quantum also sells their “hotwire” kit for these pumps. Might be worth getting it from them when you order the pump. I was looking into buying the same kit.

 

[Leadsled Coupe]

Thanks I was mostly curious about it. I have enough fuel delivery for my meager current needs. I did all that relay and wiring work 17 yrs ago to optimize my (then new & improved!) 255lph pump.

 

[Blackfive0]

Heavy Gauge Fuel Pump Pigtail For 1986 - 1997 Mustangs

The Pro-M Racing Fuel Pump Pigtail is intended for use with high volume “In Tank” fuel pumps, and heavy duty wiring kits for those pumps. The pigtail uses 12 gauge wire which allows you to use the proper gauge wire to power your fuel pump, rather than splicing large wire to the small wires used...

www.promracing.com

This is what I use when I swaped to a prom hanger and wired it to relay that was triggered by the factory fuel pump wiring in trunk.

 

[Leadsled Coupe]

Nice. They didn’t have that years ago and I spliced in 10 gauge wires up close to the OEM connector. So I do have a small length with small gauge wire. Perhaps an inch if memory serves. I’ll keep this in mind and may upgrade too.

My battery/ solenoid/ relay are all back in the trunk so it was an easy job to do it right.

 

[RekeHavoc]

@Blackfive0, @Leadsled Coupe - I have the Ron Francis version of that pigtail. Did you guys just pass the wires through the existing grommet into your hatch/trunk? I have been toying with the idea of trying to de-pin/re-pin this into the OEM harness connector (since I will be snipping those wires and running to the relay), but I'm not sure it's worth it.

 

[Leadsled Coupe]

I snipped the wires close to the connector and soldered in 10 gauge as I recall. Ran those large wires to the relay etc.

I still have a small bottle neck but mine is sufficient for the needs I’ve had so far these last 20 years.

 

[Blackfive0]

I used a weather pack connector in place of the factory. And it was a big Pain but was able to fish the wires through the factory seal and the truck pan.