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9 Super 7® 3x2 Carb/Offy Intake Manifold Kit, 1932-41 Flathead
9 Super 7® 3x2 Carb/Offy Intake Manifold Kit, 1932-41 Flathead

9 Super 7® 3x2 Carb/Offy Intake Manifold Kit, 1932-41 Flathead

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9 Super 7® 3x2 Carb/Offy Intake Manifold Kit, 1932-41 Flathead
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9 Super 7® 3x2 Carb/Offy Intake Manifold Kit, 1932-41 Flathead 9 Super 7® 3x2 Carb/Offy Intake Manifold Kit, 1932-41 Flathead
9 Super 7® 3x2 Carb/Offy Intake Manifold Kit, 1932-41 Flathead
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Speedway estimates this item will ship on November 1st.
Part # 9251240
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This tri power kit uses the Offenhauser 1932-1941 Flathead Ford 3x2 intake with Speedway's 9 Super 7® carbs. It has progressive linkage to give you good driveability and economy, but power when you need it. It includes three carbs, the intake, air cleaners, linkage kit, fuel block, fittings and red fuel line. Assembly required. 

The 9Super7 Carb ® makes setting up a multiple carburetor induction system easier than when Strombergs were available new. All that's required to do so with our kits is a Uni-Syn syncing tool and a little patience. Our 3 Carb kits come with one primary carburetor and two secondary carburetors while the 2 Carb kits are both primary carbs.  See our Multiple Carburetor Tech Tip for more information on using the 9 Super 7 in a 2x2 or 3x2 carb set-up.

  • For 1932-41 Ford Flatheads
  • 4-5/8" carb centers
  • Has boss or flange for generator or fan assembly to mount to
  • Has the fill and draft holes behind flange
  • Includes generator adapter brackets
  • Three deuce carburetor setups come with two "secondary" carbs for front and rear intake position and one "primary" carb for central/middle position
  • All-new tooling for crisp, flawless castings
  • New aluminum base assembly allows for cooler fuel temps and better fuel efficiency as compared to the original cast iron design
  • Stainless steel screws and hardware
  • Original troublesome needle and seat replaced by a Grose-style fuel inlet valve to better cope with higher fuel pressures and improved high speed running 
  • Will not stick or dribble like the old Viton-tipped needle and seat setups
  • Extended brass throttle shaft to simplify multi-carb linkage
  • Primary Carb - (1) Middle Position
    • Choke assembly, accelerator pump, and jets have all been faithfully retained and accept standard Stromberg parts
  • Secondary Carb - (2) Front and Rear Position
    • Special base plate with no idle circuits or choke linkage
    • Special butterflies and shafts installed
    • Works best with progressive linkage
    • Idle only off the center or main carburetor
    • No more plug foul

Note: The secondary carbs have NO choke, and they have NO idle system.

Note: Not recommended for use with Ethanol fuels.

 

9 Super 7® Linkage Kit Instruction Sheet (PDF)

915-11655 9 Super 7® Carb Instructions (PDF) 

Notes

9 Super 7® Primary Carbs -
  1. Features .045" main metering jets and a number 65 power valve, which is the same as a stock 97 carb.
  2. Replacement jet access plug gasket use # 91011542, replacement needle & seat gasket use # 91011543.
  3. Includes base gasket.
  4. The 9 Super 7 ® will operate suitably with fuel pressures ranging from 1-1/2 psi to 4 psi, with a desired setting of 2-1/2 psi to 3 psi. Fuel pressure from 4 psi to 7 psi will cause the carburetor to run excessively rich and may cause flooding. Flooding or leaks caused by excessive fuel pressure do not indicate a faulty carburetor.
  5. Our independent tests produced these flow numbers:
    • 3" of Vacuum - 60 CFM
    • 10" of Vacuum - 110 CFM
    • 15" of Vacuum - 136 1/2 CFM
    • 28" of Vacuum - 184 CFM
Learn more about setting up 3 x 2 carbs using the 9 Super 7 ® in Street Rodder Magazine's tech article Speedway Motors Stromberg 97 - Tri-Power In Under An Hour.
 
See what other industry experts are saying about the 9 Super 7 ® here.

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What's In The Kit

Each kit from Speedway Motors is carefully packaged and delivered right to your door. Below is a list of all the items you should expect to receive when you order this kit. Some of these items may also be available for sale individually if you're here looking for replacement parts.
  • Offenhauser 1072 1932-1941 Ford Flathead Triple Carb Intake Manifold
    Qty x 1
  • 8 Inch Swedged Aluminum Throttle Linkage Tubes, 3/16 (10-32) Thread
    Qty x 1
  • Progressive Slide Link
    Qty x 1
  • 3" Single End 3/16" Tube
    Qty x 1
  • 3 x 2 9 Super 7 Linkage Kit
    Qty x 1
  • 97-Style Carburetor Fuel Inlet Fitting, 1/2 In-20 to 5/16 Hose, Chrome
    Qty x 3
  • Red See-Through Fuel Line, 5/16 Inch I.D. x 6 Ft.
    Qty x 1
  • Primary 9 Super 7® 3-Bolt 2-Barrel Carburetor, Plain Finish
    Qty x 1
  • 1 1/4" Carb Stud Kit Bag of 4
    Qty x 3
  • Straight Chrome Fitting, 3/8 Inch Hose to 3/8 Inch NPT
    Qty x 1
  • Straight Chrome Fitting, 5/16 Inch Hose to 1/4 Inch NPT
    Qty x 3
  • Speedway Three Outlet T-Style Chrome Fuel Distribution Block
    Qty x 1
  • Helmet Style Air Cleaners
    Qty x 3
  • 1932-1948 Ford Flathead Intake Gasket
    Qty x 1
  • Stromberg 97-Style Center Carb Throttle Shaft Arm
    Qty x 1
  • Secondary 9 Super 7® 3-Bolt 2-Barrel Carburetor, Plain Finish
    Qty x 2
  • Stromberg 97-Style Extended Throttle Shaft Arm
    Qty x 2

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