98 fuel pump

Discussion in 'SN95 4.6L Mustang Tech' started by vitoGT, Aug 27, 2009.


  1. vitoGT

    vitoGT New Member

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    I want to go to a Walbro 255lph High Pressure pump,I have found for kits go up to 1997. Model # GSS340 is the pump to use, is it also direct fit for 98 ?I think I have returnstyle-car build date 08/1997 and model year 1998. This is photo from my car. Is it difficult to change fuel pump basket to make it work with Walbro GSS340?
    [​IMG]
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  2. Blackone51

    Blackone51 Member

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    Yes that looks like what I have (return style). I think they only go to 1997 because some 98's have the returnless style.:shrug: I know 98cobra281 put that pump in his car, maybe he'll chime-in. I also know I'm putting in an external fuel pump in my 1998 but when a get my built block and can up the boost, I'm going with that same Walbro in combination with the external Anderson pusher pump (same as T-rex).
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  3. soupnutz

    soupnutz Member

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    Been a few years since I changed my fuel pump and I can't remember everything, but the difference on the 98 is that the sender and pump are in the same unit whereas on the 96,97 they are seperate, and the 98 has a fixed non-adjustable fpr on the fuel rails. heres alink discussing it.
    Need help! 98 GT fuel system - What's so different? - Modular Depot Forums

    The walbro should fit with modifications to the basket.

    I installed a focus svt pump, no modifications whatsoever.
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  4. vitoGT

    vitoGT New Member

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    Thaanks for answers, did you install focus svt pump with return-style system? I think i buy this pump Ford Racing Performance Parts [M-9407-D46*]
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  5. Blackone51

    Blackone51 Member

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    How, the svt focus pump is for a returnless style system??
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  6. soupnutz

    soupnutz Member

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    quick question on fuel pump - Modular Depot Forums
    Hers the original thread I wrote asking Randy Stinchcomb, (who is a mustang expert and parts guru) about the pump I installed. Bought it as a vortech pump #8f001-265, the part stamped on it was a ford part #3s4u-9350-aa, which according to him and every google search I've done is a SVT focus pump, (http://forums.corral.net/forums/showpost.php?p=2989676&postcount=6). Installed withoug modifications and has worked flawlessly for 2 years now. Unless vortech actually changes something, (which I doubt they did), from what I've read they just tested it at a higher voltage rate to get the 255 lph and resold it as their own.
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  7. soupnutz

    soupnutz Member

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