Walbro GSS307 255L/hr or GSS340? - Ford Mustang Forums : Corral.net Mustang Forum
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post #1 of 3 Old 04-18-2002, 12:16 AM Thread Starter
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Walbro GSS307 255L/hr or GSS340?

Do I need the GSS340. The high pressure above 60 psi pump?


Subframe Connectors: Steeda, Lower control Arms: Global West, Coil Springs Steeda, Caster/Camber Plates: Steeda, Shocks & Struts: Tokico 5-WayAdjustable, Front Sway Bar: Steeda, Back Sway Bar: Stock, Pan Hard Bar: Granatelli Motor Sports, Off-Set Rack Bushings: SVO, Gears: 3.73 Shifter: Pro 5.0, Exhaust: Flowmaster 50 series, X-pipes: Bassani, Auburn Differential, Clutch: Centerforce Dual Friction, Clutch Cable: SVO adjustable, Transmission: T-45 Tremic (Replaced Under Warranty)Spark Plugs: NGK TR55VX .035 gap Fuel Pump in tank: Walbro 255 gph Auxiliary Fuel Pump: T-Rex Fuel Pressure Regulator: Areo Automotive Super Charger: Vortech, Fan Switch with thermostat, Front Brakes: Brembo 4 piston calipers & 13" Rotors, Rear Brakes: Stock, Ignition: MSD DIS-4, Wheels: 18x9.5, Tires: Bridgestone Potonza 730 Front: 245/40/18, Back: 265/35/18
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post #2 of 3 Old 04-18-2002, 01:25 AM
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let me give you an analogy. on the 99+, the corresponding part nunmebrs are the GSS 317 and the GSS 342..BOTH rated at 255lph, the 342 is the "high pressure" the 317 actually flows more perlower voltages (i have tested both on my car). i am not sure about for your year though, my guess is either will work, if it fits.

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post #3 of 3 Old 04-18-2002, 02:00 AM
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I was told by Muscle Motors that GSS340 was best for supercharged 96GT's.

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