Register now to get rid of these ads!

Hot Rods Are you running multiple carburetors?

Discussion in 'The Hokey Ass Message Board' started by HOTRODPRIMER, May 23, 2021.

  1. Dennis D
    Joined: May 2, 2009
    Posts: 837

    Dennis D

    Running three-twos on my avatar. Once the throttle plates on the end carbs were sealed correctly it has been adjustment and trouble free. I try and make sure I 'exercise" the end carbs at least once every time I take it for a spin. Just for medicinal purposes only of course:D
  2. IMG_2661.JPG

    Two old school AFB’s on an otherwise stock 383 in my ‘64 Chrysler rag top.
    Drive nice, other then the top end power you wouldn’t know the difference between them and the two barrel they replaced.

    Sent from my iPhone using H.A.M.B.
  3. 3W JOHN
    Joined: Oct 8, 2015
    Posts: 1,127

    3W JOHN

    My T had 2 carburetors since I built it in 1962, never any problem.
  4. 3 two barrel Holleys on my 390 FE. It runs well and reasonably strong. It's a little fussy on the gas it gets. It loves premium, :) but not stale premium. :mad: The gas doesn't get a chance to get stale in the car but the odd time I'll get some at a gas station that doesn't sell enough premium to keep it fresh. :( If I'm unsure :confused: I put regular in it but I don't like the alcohol content in regular. It's pretty dependable ... but experience has taught me to keep a power valve in the trunk.

    I'm thinking about 2 94s for the '50 now. :cool:
  5. 2OLD2FAST
    Joined: Feb 3, 2010
    Posts: 4,326

    from illinois

    If you get along well with carburetors , the more , the merrier . If you can't get along with one carb , multiplies won't be any better .
    clem, Old6rodder, 3W JOHN and 4 others like this.
  6. desotot
    Joined: Jan 29, 2008
    Posts: 1,978


    I have 2x4 edlebrocks on my avatar. A pair of 550 cfm Thunder series that work great and when I had my Desoto hemi in my 27 T I ran 6x2 Holley 94s for almost 12 years.
  7. Lil32
    Joined: Apr 4, 2012
    Posts: 2,534


    I ran 3 SU carbies on a straight six here in Aussie,no trouble
    Ned Ludd, mctim64, 3W JOHN and 5 others like this.
  8. mgtstumpy
    Joined: Jul 20, 2006
    Posts: 9,223


    I, like Noel, ran triple SU carbs on a 6cyl GMH and now run 2x4s on my FE Fairlane with a progressive linkage. My 46 Olds will eventually run 6 x Strombergs. :D
  9. Been running this set up for over 40 years...... 101046-1250433049-bba1e83ce5a0c2202ff52069a567826d.jpg
    Baumi, BigRRR, olscrounger and 14 others like this.
  10. Everything that is HAMB friendly has multiple carbs. Got dual fours on my 33 Pickup, they have been on there for over 25 years with never a hiccup. The 55 Chevy has tri power with progressive linkage and the thing rips and runs great. Then Taboo has 6x2's and its runs well enough. Car is a trailer baby/show car so it runs good enough to unload and move to its show spot and back. Did cruise it once at Goodguys and it ran great. It will occasionally foul a plug from all the idling it does.

    1510943_781802628500160_552182944_n.jpg 44391605_2649461365067601_3023397139452526592_o.jpg 2.jpg
  11. uncleandy 65
    Joined: Jan 14, 2013
    Posts: 4,086

    uncleandy 65

  12. uncleandy 65
    Joined: Jan 14, 2013
    Posts: 4,086

    uncleandy 65

  13. uncleandy 65
    Joined: Jan 14, 2013
    Posts: 4,086

    uncleandy 65

  14. uncleandy 65
    Joined: Jan 14, 2013
    Posts: 4,086

    uncleandy 65

    Joined: Jun 6, 2007
    Posts: 4,715


    Inline sixes virtually cry out for multiple carbs.

    sr_047_3.jpg willys01.jpg adv23t094.jpg 303 motor 50.JPG orange paint 04.jpg truckster '18.jpg 0 sr_072.jpg
  16. sidewayzz69
    Joined: Aug 9, 2020
    Posts: 372


    Yes. Although I am waiting on holley 450s.

    Attached Files:

    3W JOHN, HOTRODPRIMER and Deuces like this.
  17. 1971BB427
    Joined: Mar 6, 2010
    Posts: 7,987

    from Oregon

    Mine is a vintage Holley Pro Dominator from the 70's with twin 450 cfm Holley carbs. Since this intake only allows sideways mounting, I couldn't run the two 1850 Holley 600 cfm vacuum secondary carbs I wanted to run. So the 450's were purchased new, but have been apart several times since new to do numerous changes to get them to work well.
    Because these 450's have mechanical secondaries, but not secondary accelerator pump, they do fine mashing the throttle, but didn't work well when gradually opening the throttle. To eliminate stumbling on secondary throttle opening I had to swap on 50cc accelerator pumps, and upsize the nozzles. Also some rejetting to make it run better at freeway speeds, and of course power valve changes too.


    The setup runs pretty good now, but I've toyed with adapter plates and switching to a pair of big Holley 2 barrel carbs to maybe improve drivability even more. Just hope they don't hurt dragstrip performance.

  18. alfin32
    Joined: Jun 20, 2006
    Posts: 1,583

    from Essex, Ma.

  19. Deuces
    Joined: Nov 3, 2009
    Posts: 22,515

    from Michigan

    Here's a couple more that I took..... 20140816_083702.jpg 20140816_083637.jpg
    olscrounger, 3W JOHN, Lil32 and 6 others like this.
  20. 3W JOHN likes this.
  21. MeanGene427
    Joined: Dec 15, 2010
    Posts: 2,309

    from Napa

    427 Fords, so of course 2x4s. I do have several fairly nice 3x2s, will probably sell some and keep one, for the 406 car. Ford actually scienced out the carbs for the different incarnations of the 427. The "C" LR carbs were actually 2 of the 1x4 carbs, only ones with 2 chokes, IIRC about 540 cfm. 652s, 715s, and 780s. A pair of #1850 600s will work quite well with just some power valve and jetting tinkering. The LR 2x4 runs pretty well and good for hood clearance, the MR 2x4 is a very good manifold, stronger but taller than the LR. The Tunnel Wedge is next level, less bottom end but strong on top. Tunnel Port and High Riser stuff has to match the different head designs. 3x2 has decent power with great looks
  22. Blues4U
    Joined: Oct 1, 2015
    Posts: 7,299

    from So Cal

    I'm running dual 2 barrel 2GC's with progressive linkage on the 283 in my A pickup. Old carbs rebuilt by @dickster27 (who put together the full package for me). It really runs good, much stronger than the stock single 2 barrel engine, when the secondary carb kicks in the motor really responds, though it does need some RPM's before kicking it in, I can't just mash my foot to the floor from low speed or it will stumble. Careful modulation with the foot feed is the trick, and a quick downshift also helps.
    [​IMG] [​IMG]
  23. '34 Ratrod
    Joined: May 1, 2019
    Posts: 156

    '34 Ratrod

    I want to get mine running but life is getting in the way right now.. It's going on a 322 nailhead in a 1934 Chevy. PXL_20210517_191046294.jpg
    3W JOHN, Elcohaulic, Lil32 and 5 others like this.
  24. Blue One
    Joined: Feb 6, 2010
    Posts: 11,376

    Blue One
    from Alberta

    Three new Strombergs finished and running strong with my new air cleaners on the Tim McMaster Y Block in my RPU.

    1ABF8740-C361-457F-AA16-BE0D39C4CD16.jpeg B8EE69C9-A571-45AF-B67C-A3588C7EC1DB.jpeg 00814D21-38EC-4615-9F20-D6EE15D74146.jpeg
    Joined: May 5, 2015
    Posts: 1,149


    When I was a kid bagging at the super market and bringing the bags out to the shopper's car I saw a hot rod (don't know what type) with a open engine bay with a engine with a blower and on top 6 carbs. So I hung around until till the owner came out. When he saw me he said, "are you guarding my car or planning on stealing something off it". I replied, "no sir (I was only 14 at the time), I just wanted to see this thing start up". So he reach in through the window, inserted the key and fired it up, just like that. He must of saw how impress I was and gave me a ride to the front door of the supermarket.
  26. This is for a future project (sbc), thanks to Tim Bowman/Old School Inductions.

  27. Norris McCarty
    Joined: Apr 19, 2007
    Posts: 339

    Norris McCarty

    Don't be scared of multiple carbs!
    40 ford engine.jpeg
    Last edited: May 24, 2021
    3W JOHN, Lil32, Deuces and 2 others like this.
  28. Jrs50
    Joined: Jun 4, 2019
    Posts: 270


    I got this off @dickster27 as well. 94's on Offenhauser manifold. It's going on a 289 I'm putting it my T roadster.

    Attached Files:

  29. lippy
    Joined: Sep 27, 2006
    Posts: 6,582

    from Ks

    Muliple carburetion has been in use for years. You just have to be smarter than the carburetion. :)
  30. Almostdone
    Joined: Dec 19, 2019
    Posts: 814


    Tri-power on a 348 Chevy. My first multiple set up. After a few tweaks with accelerator pumps and the progressive linkage (not using the factory vacuum operated linkage) it seems to run great. I only have 600 miles on it though. I’m a tinkerer - this will work even if its hard to do (which it has not been so far).

    I like to get new fuel in the end carbs on each drive - as others have pointed out. Thus far I’ve only been driving locally, so nothing but ethanol-free to date!



Share This Page

Register now to get rid of these ads!


Copyright © 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.