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Thread: 2x2 or 3x2 for my 283
          
   
   

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  1. #1
    merc53man is offline CHR Member Visit my Photo Gallery
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    2x2 or 3x2 for my 283

     



    i've got a 56 chev pickup with a stock 283 with headers. now i have the holley 2300 series 500cfm 2bbl on there and it runs pretty good, but i just like multiple carbs, and it wont be my daily driver anymore, so i will have time to fiddle with the carbs. i was looking into maybe 3 stromberg 97's or 81's, or 2 rochester 2G's. would the 2 rochesters be flooding the motor a little bit? are ther 300's or 350's? i know the size of strombergs and 3 97's would only come out to about 465 cfm which sounds god for my motor. also, with 2 97's should i need progressive linkage or is straight ok?
    any recommendations or past experiences with either would help my project.
    thanks
    Dylan

  2. #2
    Itoldyouso's Avatar
    Itoldyouso is offline CHR Member Visit my Photo Gallery
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    Car Year, Make, Model: '27 ford/'39 dodge/ '23 t
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    Three Rochesters would be ok because you are normally going to be running on the center 2 barrel until you kick it down. Strombergs would be a better cfm match IMO, but they are a little more finicky. Rochesters are just one of those carbs you bolt on and run with.

    I'm wrestling with the same dilema, I want the looks of trips on my T, but the darned four barrel runs so good on it and gets such good milage that I hate to upset the applecart. I know I am going to bend and do it though, they just look so good.

    Gastrick on here is going through this swap right now and might be able to tell you more about what issues he ran into. He bought a very nice setup at Daytona and is getting it installed as we speak.

    Don

  3. #3
    merc53man is offline CHR Member Visit my Photo Gallery
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    .

     



    cool, thx for the input. are you going w/ rochesters or 97's? im curious about the new 97s they're making --$450 but they are ready to run...

  4. #4
    Itoldyouso's Avatar
    Itoldyouso is offline CHR Member Visit my Photo Gallery
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    Quote Originally Posted by merc53man
    cool, thx for the input. are you going w/ rochesters or 97's? im curious about the new 97s they're making --$450 but they are ready to run...
    I just learned about those new Strombergs, a little steep but not horrible. I am probably going to go with Rochesters because I have two complete sets, one for my Olds and one for the Chevy in my T. Plus, most new manifolds are drilled for a four bolt pattern. I think Gastrick has strombergs on his setup though.

    Don

  5. #5
    Itoldyouso's Avatar
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    Oh, just as a sidenote, my Kid had his Olds tripower carbs redone by Hot Rod Carburation and they did a fantastic job on them. All properly dyed screws and all. Cost wasn't real bad either, I think something like $ 450 for the 3, at least that is what I recall. Service and turnaround was great too.

    Here they are before and after.

    Don
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  6. #6
    NTFDAY's Avatar
    NTFDAY is offline CHR Member Visit my Photo Gallery
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    Tri power is fine, I just don't like to balance them. IMHO, an early two four set up is much cooler than tri power.
    Ken Thomas
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  7. #7
    Dave Severson is offline CHR Member/Contributor Visit my Photo Gallery
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    Bit of nostalgia here, but many, many moons ago when we still ran Super Modifieds up here in this part of the world the tracks had a rule said you could run 4 barrels of carburation, but it had to be the engine manufacturer's carb....ie, no Holleys on chebbies.... We ran a pair of 2G Rochesters on a three deuce intake using the front and rear positions on the manifold.... Wasn't the best setup in the world but it would out run the guys with the 4GC Rochesters on a single 4 barrel manifold.....
    Yesterday is history, tomorrow is a mystery, Live for Today!
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  8. #8
    kitz's Avatar
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    I did some reading recently that shows the vacuum 850 on my 502 will run rich everywhere but WOT. I owned a tri power 427 Vette that really ran rich. My point is that IMO is a lot of carb for a 283. I'm certainly not saying it cannot be done, but you might want to consider putting in an oxygen sensor for tuning purposes. I am going to put one in my collectors (that are already ceramix coated ). You can read it while driving with a cheap gage and then remove it and plug the bung with a spark plug.

    Digital Air/fuel Gauge, Part # SUM-G2986 for $27.95
    O2 Sensor, Part # SUM-G2989 for $29.95
    Weld-in BUNG for O2 Sensor, Part # SUM-G2990 for $4.49

    Re-ceramic coat ...

    Kitz
    Jon Kitzmiller, MSME, PhD EE, 32 Ford Hiboy Roadster, Cornhusker frame, Heidts IFS/IRS, 3.50 Posi, Lone Star body, Lone Star/Kitz internal frame, ZZ502/550, TH400

  9. #9
    HemiTCoupe's Avatar
    HemiTCoupe is offline CHR Member Visit my Photo Gallery
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    I ran 3X2 with rochester carb/s and with Stromberg 97's on 283's for years, I like the rochesters alot better than the 97's , when it got 131,000 miles I put a 2X4 tunnle with holley 600's on it and a small factory cam, and still had the oem heads, I only put on a couple X miles, I hit a ice patch when I had the peddle down and pop! I couldn't find 2 cylinders and pistons and a BIG hole in the block and pan from side to side!
    I ran 2- 283's and a 327, 350 with 3X2's and never had a to much fuel problem.
    They are easy to set, and even easier if you go buy a $10.-15.00 synchronizer! Just take your time, read and listen to what people that run/tune them say. I have had something with 2 or more carbs, since the 60's and I have 2 Dellorto on my trike!


    Pat
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    HemiTCoupe



    Anyone can cut one up, but! only some can put it back together looking cool!
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  10. #10
    Hotrod46's Avatar
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    Mercman

    I have 3 dueces on the 383 in my 46. I've been running them for about 7 years now and I can tell you they are great. I'm running Rochester 2G's on an Offy manifold. As long as you run them progressive, you shouldn't have any synchronization problems.

    They can be a little pricey to set up with the correct bases and linkage though. I got my parts through Hot Rod Carburetion, but the link I had for them doesn't work anymore. The guy I spoke with back then was very helpful and knew what he was talking about. The pics I have looked at of the Speedway conversion kits look exactly like the stuff I used. I have read that Speedway's kits are made by Vintage Speed.

    I going to be setting up another set for my T in the near future and I'll post the build-up there. I'll use a Speedway kit.

    Mike

  11. #11
    Bob W's Avatar
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    I like the 56 to 61 dual fours. They idle on both carbs and run on the rear carb till you stand on it.



    Bob

  12. #12
    HemiTCoupe's Avatar
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    I'm running 8X1's in my T Coupe


    Pat
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    Last edited by HemiTCoupe; 01-25-2008 at 05:45 AM.
    HemiTCoupe



    Anyone can cut one up, but! only some can put it back together looking cool!
    Steel is real, anyone can get a glass one.


    Pro Street Full Fendered '27 Ford T Coupe -392 Hemi with Electornic Hilborn injection
    1927 Ford T Tudor Sedan -CPI Vortec 4.3
    '90 S-15 GMC pick up

  13. #13
    merc53man is offline CHR Member Visit my Photo Gallery
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    nice!

    its hard to beat the coolness factor of hilborn on that 392 hemi!

  14. #14
    gassersgarage is offline CHR Member Visit my Photo Gallery
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    Try www.hotrodcarbs.com

    Great service, a little pricey. Since you got a truck, this would fit nicey under the hood. I run their tri-power on my 283, no problems.
    CARB_5.jpg

  15. #15
    merc53man is offline CHR Member Visit my Photo Gallery
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    cool, cool, but i think i need a hotter cam or more compression or that tunnel ram might just hurt my performance. i bought the truck a year and a half ago and was told there was 35k mi on a rebuild (no proof though) and i have probably put at least 25k on it-- but it seems to me it was a stock rebuild. would i be better off getting one of edelbrock's or offy's low rise 3x2 intakes?

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