Walbro GSS307 or GSS340?
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Old August 22nd, 2009, 07:45 PM   #1
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Walbro GSS307 or GSS340?


I bought a fuel pump from summit - a Walbro 255lph GSS307, however im reading that the GSS340's are better at higher pressure, anyone know if they are fine for a 400~ hp turbo setup? Or should i have gotten the 340?
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Old August 23rd, 2009, 05:17 AM   #2
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It's fine. the difference is only at high fuel pressure. Unless you're running over 60 psi then no need for a high pressure pump. I'm also using the 307.

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Old August 23rd, 2009, 03:06 PM   #3
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Thanks man, what I wanted to hear.

At 40psi base and 1psi for every 1 pound of boost i should never even see over 50.
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Old August 23rd, 2009, 04:19 PM   #4
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i have the 340 but i think your golden
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