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  1. #1
    casual poster STOKESY77's Avatar
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    Default What fuel setup for VK 355, carby or efi?

    Hi all,

    Just after some advice on fuel system setup for a VN headed 355 I'm building. If carby I was going to use a QFT Brawler 750cfm mechanical secondary or if efi I was going to use a Holley Sniper set up as it is self learning. Decisions decisions... I already have a VN Statesman 80L tank in the VK with return line setup.

    Thanks in advance, Stokesy

  2. #2
    Senior Member BasicQ's Avatar
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    Default What fuel setup for VK 355, carby or efi?

    Would the Brawler be a money saving decision?

    What I am getting at is if you are willing to spend the coin on a Sniper system then there are better carb options but more dollars than the Brawler. Initial outlay still less than Sniper system, in fact probably enough dough left over for an AFR meter to tune on the carby. A fully adjustable annular of the right size becomes a better conversation than Sniper v Brawler. Annulars are the most underrated and underutilized carbies out there for the type of cars most of us drive.

    If you want best fuel economy, lowest emissions and drivability then the Sniper is a no brainer.

    When it comes to power a well sorted carb can match and slightly have the WOT edge over fi, plus it comes with the nostalgia.

    If your a set and forget guy then Sniper. Hands on and like to tune guy then carb.

    Want car meet cred, Sniper. More period correct, carby.

    Iíll leave it there as there will be a lot more pros and cons to come from others.

    But first give some info on your engine build and driveline set up.


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    Last edited by BasicQ; 24-05-2021 at 05:56 PM.

  3. #3
    casual poster STOKESY77's Avatar
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    Block is a VS 304, heads were shaved. 020", ferrea 6000 series valves with pocket port and tidy up, Yella Terra pro street roller rockers, Crane f-280 solid with matching lifters, springs, retainers and collets, scat Chev journal 355 crank, scat 6" forged I-beam rods, srp forged flat tops, asr high volume sump and pavtek girdle, Harrop single plane high rise manifold. Th350box and 9" lsd diff. Getting 3.9:1 gears for diff soon as only has 3.0:1 ATM. Have genuine Bosch hei dizzy that will need recurve. Pacemaker PH5700 extractors, twin 2 1/2" into single 3" exhaust. Just a weekend cruiser with a little strip action here and there.

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    Last edited by STOKESY77; 24-05-2021 at 10:52 PM.

  4. #4
    Senior Member BasicQ's Avatar
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    Default What fuel setup for VK 355, carby or efi?

    Nice.

    I am a carby guy so that is what I would go for. However, if it were to be a regularly driven car even somewhere in between a daily and every other weekend car I'd lean to the Sniper. Sniper better for a 'drivers' car.

    Self tuning (tuning by you) is another aspect to consider. If you can get your head around tuning either or have to rely on a second party for both then that tuning doesn't come into the equation. If you would be able to do one and not the other then there is another pair of pro's and cons.

    A carb wont ever match the accuracy of fi but fi will never match the character of both driving and aesthetics a carby can give.

    Your probably working out by now my view is the end decision will be personal preference over a range of factors. No doubt about the technical superiority of the Sniper system, but that may not be what everyone wants.
    Last edited by BasicQ; 25-05-2021 at 06:18 PM. Reason: grammar

  5. #5
    Not the Kingswood! hq308's Avatar
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    For what it's worth, I picked up 3mph going from Fitech EFI back to a bitsa 750 Holley on my standard stroke 308.

  6. #6
    casual poster STOKESY77's Avatar
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    Default

    ...
    Last edited by STOKESY77; 25-05-2021 at 01:06 PM.

  7. #7
    casual poster STOKESY77's Avatar
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    https://www.ebay.com.au/itm/174244382194?_trkparms=aid%3D111001%26algo%3DREC.S EED%26ao%3D1%26asc%3D20160908105057%26meid%3Dc7dbd 70a5aeb4f269aa5a8085715b5c6%26pid%3D100675%26rk%3D 2%26rkt%3D15%26mehot%3Dnone%26sd%3D143413468393%26 itm%3D174244382194%26pmt%3D1%26noa%3D1%26pg%3D2380 057%26brand%3DQuick+Fuel&_trksid=p2380057.c100675. m4236&_trkparms=pageci%3Ade601ac6-bcfd-11eb-8d0b-d259dc21af6f%7Cparentrq%3Aa14651a01790a49a2956ef71 fff72ad4%7Ciid%3A1

    https://www.ebay.com.au/itm/143413468393?_trkparms=aid%3D111001%26algo%3DREC.S EED%26ao%3D1%26asc%3D20160908105057%26meid%3Dc7dbd 70a5aeb4f269aa5a8085715b5c6%26pid%3D100675%26rk%3D 1%26rkt%3D15%26mehot%3Dnone%26sd%3D143413468393%26 itm%3D143413468393%26pmt%3D0%26noa%3D1%26pg%3D2380 057&_trksid=p2380057.c100675.m4236&_trkparms=pagec i%3Ade601ac6-bcfd-11eb-8d0b-d259dc21af6f%7Cparentrq%3Aa14651a01790a49a2956ef71 fff72ad4%7Ciid%3A1

    If I did go carby these are the 2 I'm looking at

  8. #8
    casual poster STOKESY77's Avatar
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    https://www.ebay.com.au/itm/184168717104?epid=27031257821&hash=item2ae14f9b30: g:YE4AAOSwNrNghPQW

    And this for efi

  9. #9
    Senior Member BasicQ's Avatar
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    Quote Originally Posted by STOKESY77 View Post
    https://www.ebay.com.au/itm/174244382194?_trkparms=aid%3D111001%26algo%3DREC.S EED%26ao%3D1%26asc%3D20160908105057%26meid%3Dc7dbd 70a5aeb4f269aa5a8085715b5c6%26pid%3D100675%26rk%3D 2%26rkt%3D15%26mehot%3Dnone%26sd%3D143413468393%26 itm%3D174244382194%26pmt%3D1%26noa%3D1%26pg%3D2380 057%26brand%3DQuick+Fuel&_trksid=p2380057.c100675. m4236&_trkparms=pageci%3Ade601ac6-bcfd-11eb-8d0b-d259dc21af6f%7Cparentrq%3Aa14651a01790a49a2956ef71 fff72ad4%7Ciid%3A1

    https://www.ebay.com.au/itm/143413468393?_trkparms=aid%3D111001%26algo%3DREC.S EED%26ao%3D1%26asc%3D20160908105057%26meid%3Dc7dbd 70a5aeb4f269aa5a8085715b5c6%26pid%3D100675%26rk%3D 1%26rkt%3D15%26mehot%3Dnone%26sd%3D143413468393%26 itm%3D143413468393%26pmt%3D0%26noa%3D1%26pg%3D2380 057&_trksid=p2380057.c100675.m4236&_trkparms=pagec i%3Ade601ac6-bcfd-11eb-8d0b-d259dc21af6f%7Cparentrq%3Aa14651a01790a49a2956ef71 fff72ad4%7Ciid%3A1

    If I did go carby these are the 2 I'm looking at
    For that little bit extra Iíd go the Pro Systems. It appears to have a Holley baseplate that have a better sized transfer slot than the QFT billet baseplate. Most driving/cruising is on the transfer slot so an important consideration. Which one would have the closest calibration for you out of the box? Without Pro System specs donít know. Even with specs it would be a guess that would need more tuning either way.

    If your keen on carby and the learning curve of dialing it in beyond jet changes then the Pro Systems, one of these or equivalent

    https://www.summitracing.com/parts/avm-30-4110

    And emulsion bleed blanks, index drills and a range of air bleeds.

    All of that for a little less than the initial outlay of the Sniper.


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  10. #10
    casual poster STOKESY77's Avatar
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    https://www.prosystemsracing.com/proseries4150

  11. #11
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    I'll get hammered for this but go for a tuneable vac sec.....carb is king.

  12. #12
    Do you ever leave? EH179's Avatar
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    Quote Originally Posted by STOKESY77 View Post
    https://www.prosystemsracing.com/proseries4150
    That's the way to do it. Add $150-200 for postage and still in front.
    I got mine delivered in 6 days from ordering and worked well straight out the box.

    Any questions you have and Patrick will respond in 24 hours.

    Billet base plate, HP main body, and everything adjustable.

  13. #13
    in the shed buildin shit 3554me's Avatar
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    Default What fuel setup for VK 355, carby or efi?

    Seven fiddy

    Canít really go wrong

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    10.28@131.99 on e85 26x10
    10.34@130.66 on e85 255 radial


  14. #14
    Part of the furniture gtrboyy's Avatar
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    750dp

    Had similar setup in vh that drove quite nice & handled arfternoon Sydney traffic easily enough.

    Did have had holley black 150,3/8 fuel line,deadhead regulator although return line & fuel tank sump to stop fuel starvation would have made it even better.

    Make sure it's got 120amp alternator,good brand 4500-5000 stally & it'll be sweet on the street.

  15. #15
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    Similar kind of engine in similar car (~3500 stall, 3.36 diff gears) with 750 mech Holley gives me a 20-25L/100km fisting at the bowser. Sounds killer and is excellent entertainment though.

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