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Thread: 2BBL vs. 4BBL

  1. #1
    Join Date
    May 2007
    Posts
    22

    Default 2BBL vs. 4BBL

    I have a 2BBL on a stock 350 engine. I am thinking of putting a 4BBL on it. What benefits will I gain with the 4BBL carb, also how many CFM should I be looking at. I am thinking about 700. I plan to do headers and exhaust now and thinking of a mild cam in and bore it out .30 over.

  2. #2
    Join Date
    Oct 2004
    Location
    PGH,PA, USA
    Posts
    4,579

    Default Re: 2BBL vs. 4BBL

    750cfm q-jet was stock for the 4v..you could use a 800cfm q-jet off a 455..
    my personal experiance, don't go with a 750 speed demon, it'll hold you back.. some people recommend the 750 holly double pumper.

    good luck with the conversion!~
    Mike aka BiZnO
    72 twinturbo Skylark

    Buick 350 Inspirational members to me..
    TuBBeD for his 551+ N/A build
    BillMah52 First to take a 350 where no man has gone before
    Justa350 First to hang a pair of turbos and cause Kaos
    GSJohnny First to max out the bore at .090 and his .075 and have engines that actually breath well N/A!
    Bobb Makley First well known to Stroke a 350
    Ken Betts, Hopefully the guy to pull-off 350 AL heads :-D

  3. #3
    Join Date
    Jun 2005
    Location
    Boncarbo,Colorado
    Posts
    1,103

    Default Re: 2BBL vs. 4BBL

    I have an aluminum Poston S-divider intake, rebuilt 750cfm Quadrajet carb and a 1" carb spacer for sale if you are interested. Shoot me a PM.
    www.ThePowerbeltForum.Powerguild.net


    Jon
    Bon Carbo, Colorado

  4. #4
    Join Date
    Mar 2004
    Location
    Edmonton Alberta
    Posts
    13,362

    Default Re: 2BBL vs. 4BBL

    Buy his stuff.... he went with a chevy motor so he'lll need the cash to fix his SBC....
    __________________________________________________ ________________________________________
    My book called Small Block Buick Performance covering the V6, 215, 300, 340, and Buick 350 engines will be released soon.

    http://www.v8buick.com/forumdisplay....rformance-Book
    __________________________________________________ __________________________________________________ _________________________________
    1970 Buick Skylark 350 street/strip with 6 point cage: Custom tube headers feed Twin T3/T4 Turbochargers, Holley 650, sheet metal single plane intake, heavily ported iron heads with oversized valves, mild Poston 114 camshaft (2800-6000 RPM), Diamond forged pistons on Hershe forged rods, balanced, ARP everywhere, dual 3" exhaust, Paddle shifted 4L80E 4 speed overdrive, Moser 12 bolt with 3.42 gear.

  5. #5
    Join Date
    Jun 2005
    Location
    Boncarbo,Colorado
    Posts
    1,103

    Default Re: 2BBL vs. 4BBL

    LMAO! no i didnt, Love has struck and i need to sell all my stuff so i can buy something good on MPG to commute back and forth. Maybe a .... toy..ota.. lol j/k. I already have an isuzu rodeo with a GM 3.1 :P
    www.ThePowerbeltForum.Powerguild.net


    Jon
    Bon Carbo, Colorado

  6. #6
    Join Date
    Dec 2006
    Location
    Texas
    Posts
    209

    Default Re: 2BBL vs. 4BBL

    hey jon, how much just for the manifold. i may be interested. thanx ralph sr.

  7. #7
    Join Date
    Jun 2005
    Location
    Boncarbo,Colorado
    Posts
    1,103

    Default Re: 2BBL vs. 4BBL

    $225 shipped.
    www.ThePowerbeltForum.Powerguild.net


    Jon
    Bon Carbo, Colorado

  8. #8
    Join Date
    Apr 2006
    Posts
    47

    Default Re: 2BBL vs. 4BBL

    How much for all the stuff?
    Chris

 

 

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