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Speedway Motors Bill Smith

97-Style Carburetor Fuel Inlet Fitting, 1/2 Inch-20 to 5/16 Hose, Plain


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What's in the Box

These fittings adapt 5/16" fuel hose to our 9 Super 7 carb as well as Stromberg 97's and Ford/Holley 94's (all with 1/2"-20 inlet threads).


  • Stromberg 97
  • Ford/Holley 94 with 1/2"-20 threads
  • Speedway 9super7 

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97-Style Carburetor AN Fuel Inlet Fitting
                        Most Stromberg 97 carbs have 1/2"-20 threads in the needle and seat inlet. With this fitting you will be able to connect AN6 hose to your carbs giving you a cleaner set-up. 

Includes sealing washer. Also fits Ford 94 style and 9super7 carbs (with 1/2"-20 inlet).
Red See-Through Fuel Line, 3/8 Inch I.D. x 6 Ft.
                        Speedway Red See-Through Fuel Line is the perfect old-time accent to your multi-carb street rod! This specially-formulated, flexible tubing has a 3/8" inside diameter and comes in 6 foot lengths. You can easily trim it to your needs. Works with normal slip-on hose barb fittings and clamps.
Speedys 9 Super 7 Primary 3-Bolt 2 Barrel Carburetor, Plain Finish

Speedway Motors now offers a reproduction version of one of the most popular carburetors ever used, the original Stromberg 97! Original equipment on '30s and '40s cars and trucks, the Stromberg 97 has long been favored by flathead hot rodders and racers who realized the performance qualities of this timeless fuel supplier.

There have been numerous attempts to reproduce this unit, with little success. "Speedy" Bill Smith of Speedway Motors in Lincoln, Nebraska, took on the challenge to make a great product even better. The 9 Super 7 ® Carb brings this reproduction of the original Stromberg 97 2 barrel carb into the 21st Century!

Speedway Motors has incorporated all of the improvements shown above while maintaining the carburetor's original look. Features such as the choke assembly, accelerator pump, main jets and cosmetics have all been faithfully retained. Additionally, each carburetor is individually flow tested and inspected for leaks. Perfection is the result! 

Aesthetically, the 9Super7 is nearly identical to the stock unit, minus the large 97 logo that appeared on the side and the patent numbers found on the float bowl area. Upgraded internal parts include; the float, needle, and seat. Jetting and power valve settings remain as they were for the original 97 carbs as well as the cfm and vacuum specs.

The other similarity that the 9 Super 7 shares with the original 97 is the setup and tuning necessary to yield a well-running machine. While perhaps not as simple as bolting on a single four-barrel, the 9 Super 7 makes setting up a multiple carburetor induction system easier than when Strombergs were available new. All that's required is an intake, a linkage system, a Uni-Syn syncing tool, and a little patience. Be sure to include the Secondary 9 Super 7 when installing multi-carb setups. 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.

  • 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
  • Choke assembly, accelerator pump, and jets have all been faithfully retained and accept standard Stromberg parts
  • Features original Stromberg 0.97" venturi diameter
  • Modern Nitrophyl float and Neoprene gaskets
  • 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
  • Grose-style jet valve won't corrode in modern fuel, something the original needle and seat units can't do
  • Comes with a No. 65 power valve and 0.045" main jets, identical to the stock 97
  • Extended brass throttle shaft to simplify multi-carb linkage

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

97-Style Carburetor Fuel Inlet Fitting, 1/2 Inch-20 to 5/16 Hose, Chrome

These fittings adapt 5/16" fuel hose to our 9 Super 7 carb as well as Stromberg 97's and Ford/Holley 94's (all with 1/2"-20 inlet threads).


  • Stromberg 97
  • Ford/Holley 94 with 1/2"-20 threads
  • Speedway 9super7 
Single Banjo Style Fuel Fitting, 5/16 Inch Hose

The cleanest way to plumb your multi carb set-up is to use banjo fittings. These 6061 T-6 aluminum fittings accept 5/16" I.D. hose and work on any carb with 1/2"-20 inlet threads. The Ford/Holley 94 carburetor will require spacers listed, which moves the banjo out to clear the carb body. Your Stromberg 97 style carb or Rochester 2G will not need the spacers.

Banjo fittings swivel 360 degrees while placing your lines closer to the carbs for maximum linkage clearance. The flange on the bolt slip fits into the banjo body keeping the fitting centered on the bolt. Large undercut on bolt and big hole will give excellent fuel flow. Teflon washers on both sides of the fitting seals the banjo.

These fittings work on all 2x2, 3x2, 4x2 and 6x2 intakes using Holley 94 or Stromberg 97 carbs. You need one single and one double for a 2x2, one single and two doubles for a 3x2, etc.

  • Makes a perfect job when using rubber or plastic hose
  • Great fitting to use when space is limited
  • Fuel line is held tight to carb sides for maximum linkage clearance
  • Precision made from 6061 T-6 aluminum alloy on a Swiss screw machine
  • 32 micron polished finish
  • Fits all Stromberg 97 - 48 - 81 style carbs, Ford/Holley 94 carbs, and Rochester 2G.