straight 6 and 3 carbs?

Discussion in 'Technical' started by adam 72, Dec 15, 2011.

  1. adam 72

    adam 72 Member

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    What are the benefits of running a set-up like this? I'm interested in learning how this works and possibly doing it at a later time. Are there major issues with this set-up? should the carbs be the stock carbs or can they be larger than stock? thank in advanced, any information will help.

    :drive:
     
  2. Bryant

    Bryant forgot more than learned

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    the advantage is created by getting rid of the log intake manifold and having equal length runners and plenum volume for each cylinder.
    the carbs should be smaller than stock. the total cfm of all 3 should be larger but each individual one should be a smaller carb.
    tuning 3 separate carbs is harder than tuning just carb. you need to have to get them each synced with each other. its like tuning motorcycle engines with multi carbs. there's a gauge that will help make it easier that allows you to compare how close each car is adjusted compared to the next.
     
  3. darren

    darren Member

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    HAd a good friend of mine do this to his 200 and more. Spent a chunk on head work,custom cam grind and induction/exhaust. It was very pricey, looked cool in his Mustang but it was still dead slow. An awful lot of money to be left standing by a Dodge Caliber CVT non turbo 2.0 liter car.
    Not worth it in my books. Just tune it well and drive it as is. Or swap it out.
     
  4. adam 72

    adam 72 Member

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    I do like the look of it. It's unfortunate to hear that there wasn't much of a noticeable gain. And well I'm here, any advice on tuning the 1 bbl on there now. I plan on doing that this weekend. I just want some information or direction before jumping feet first. Thanks for the replies.
     
  5. Gene Fiore

    Gene Fiore Member

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    There's a guy on fordsix.com that has a 3 carb setup in a Mustang that runs mid 14's at the dragstrip...just saying...
     
  6. Bryant

    Bryant forgot more than learned

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    simply putting 3 carbs on the motor doesn't mean it will be high performance. to build a high performance motor you have to consider every aspect of the motor. a gas engine is just an air pump. the more air you can get into it and the more you can squeeze it and then get it out of it as fast as possible the more power the motor will make. so to get the most out of a 3 carb set up you will want to have the heads ported and bigger valves and a custom cam shaft. you will want to have a header and high flow exhaust system. you will want to look into raising the compression ratio. build the bottom end tolerances to take a higher rpm speed. there is allot of other thing that can be done.
     
  7. Gene Fiore

    Gene Fiore Member

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    You are absolutely correct...I should have been more specific. The dude on fordsix.com has definately made the kinds of mods you suggest.
     
    Last edited: Dec 15, 2011
  8. maverick75

    maverick75 Gotta Love Mavs!

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    Why stop at 3? put 6 on in :D

    Or swap over to EFI and put independent throttle bodies on it.


    The best bang for your buck would be a built head. Now a classicinline head is pretty expensive and I don't really care too much for the design.

    But a big valve head and milled to accept a 2bbl will be nice. Add a header and a cam and you got yourself a nice cruiser that should stay on par with stock 302's.

    There's a lot of reading material over on:

    http://fordsix.com/forum/viewtopic.php?f=1&t=54798
     
  9. darren

    darren Member

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    Doesnt mean it cant make some power. Dont get me wrong it was a noticeable gain from stock but stock is very slow. It can be done without doubt, but is it worth the investment?? Some nice 6 cylinder cars and fast ones around. You need the money, patience and knowledge though. If your dedicated and want to be a bit different then go for it.
     
  10. rwbrooks50

    rwbrooks50 Member

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    I like the I6 because it is different. But, it is more expensive per HP.

    The two barrel carb is nice too.

    Start by getting this handbook:

    http://www.falcon6handbook.com/

    fordsix.com

    Rick
     
  11. sportyfamilycar

    sportyfamilycar ElMaverick

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    exactly,
    If you plan to rebuild the motor down the road and go with the offy 3 carb setup then include --- a mild-hot cam, header, and bump the compression ratio, you'll have a very stout straight six.
    If you just want to install the 3 carburetors, you'll gain some power, but mainly lose mpg in my opinion.

    and you can't stuff the 3 carb offy under a stock maverick/comet hood. You will have to lower the engine mounts as carburetor 1 will not clear.

    my 2 cents
     
  12. maverick75

    maverick75 Gotta Love Mavs!

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    That's the beauty of sidedraft carburetors, not to mention you can get them basically for free from the import guys.


    Like Steve McQueen's Jaguar :D

    [​IMG]
     
  13. Streetdeacon

    Streetdeacon Streetdeacon

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    A few years back I had a 51 chevy with a 261 ci 6. I put a Sharp 2 carb setup on it and split the exhaust manifold. The rest of the engine was stock. With just those 2 changes I dropped the quarter mile et by .8 sec. and increased the gas milage from 18 hwy to 21 hwy. I used 2 stock carbs and tuned them by ear. It can make a difference but with the ford 6 ci you can't change the intake manifold so it gets more expensive because of the machining that has to be done. I am planning on doing the 302 swap this winter hopfully. I looked into the 6 ci hope up and the price for what you git wasn't there. They od look cool though. :drive:
     
  14. adam 72

    adam 72 Member

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    I do love the way the six looks and honestly I'm still surprised how fast the car moves with it. I think for now ill stick to basic research and getting it tuned. I'm still a fan of a 302 like most here im sure ha :dance:
     
  15. sportyfamilycar

    sportyfamilycar ElMaverick

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    Would be a little harder but yeah that would work perfect.

    @adam72.
    If your happy with it, then leave it. They are reliable and get decent fuel economy. I just bumped my compression ratio and ran dual out pipes on my 250 and it can get up and move in a hurry and can do a standing burnout if I wanted :cool:
     

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