Check out this new Stromberg BIG97 video, awesomely directed for us by Piero De Luca. We love it and you will too. And thanks to Walden Speed Shop for the location! For full BIG97 details and pricing, please click here for the Stromberg BIG97 page.
We’ve worked hard this year on new solutions for Stromberg 6×2 set-ups, and here’s another smart idea that makes things even easier. Stay with us. It’s complicated!
Banjo fittings have always seemed a clean solution for 6×2 sets because you can run just two simple hose lines to the back of the engine and fit a fuel block on the firewall. Yet you never see it with progressive linkages. Why? Because progressive linkages with banjos also need banjo spacers to move the feel line away from the long center lever arm. But if you do that, you get into another issue, as the progressive linkage sliding rods on each bank must pull the front carbs open, because of clearance issues with the back-bar. And the sliding rod hits that banjo spacer.
Our new 9086K-C Banjo Spacer with Clearance solves that issue. Fit one to each center carb on your 6×2 and you will provide clearance for the forward-facing sliding rod. Job done! Of course, this also works for 3×2 linkages if you need to configure it in the same way. Check the new pieces out on our website and speak to your Genuine Stromberg dealer today!
We’ve been talking about our new BIG97 for far too long already. But now they’re available. Here’s the press release to start with. And we’ll be posting far more (i.e. everything we’ve got!) in the coming days and weeks. Please stay tuned!
May 2015. New BIG97 makes traditional carburetion available to a new performance audience.
Stromberg Carburetor is excited to announce the all-new BIG97 Tri-Power. On the outside, it’s all Genuine 97 – the original hot rod 3×2. But on the inside, an incredible 750cfm air flow makes traditional hot rod carburetion available to a whole new performance audience. Designed on the classic Primary/Secondary format with many new and exclusive features, the all-new BIG97 Tri-Power is the perfect bolt-on for your performance small block Chevy or Ford.
- BIG 750cfm airflow – 55% more air than regular 97s
- Signature 97 outside shape – No change!
- New power valve circuits improve fuel conditioning
- New ‘early plenum effect’ boosts top end power
- Ported distributor vacuum adds mid range torque
- Progressive linkages and classic 3-into-1 fuel line available
- Runs out of the box. Pre-jetted for typical SBC/SBF
Stromberg owner, Clive Prew said: “With 750cfm in a three-carb package on a progressive linkage, you can cruise economically on the single Primary, then punch in the Secondaries when you step on the gas. BIG97s reduce the level of vacuum the engine has to pull to get the air it needs, which promotes higher air/fuel density. They also reduce mixture velocity which allows that denser, fuel-heavy air an easier, less turbulent, turn into the inlet manifold. Coupled with improved fuel conditioning, it all adds up to more power for your rear wheels.”
From the outset, Stromberg’s aim was to re-engineer the 97 venturi and throttle body to maximize airflow without changing the signature outside shape. But achieving as much as 250cfm per carburetor – some 55% more than a regular new 97 (at 162cfm) is only part of the story.
The BIG97 Primary carburetor has a new power valve, located in the fuel bowl. Feeding top end enrichment directly into the emulsion tubes, it significantly improves fuel conditioning for more horsepower on less fuel. How? Because the more it emulsifies the fuel, especially at high rpm when manifold pressure is low, the easier it is to atomize, distribute and burn. At the same time, an oval cut-out, just under the throttle plates (Stromberg’s ‘early plenum effect’ ) coupled with our recommended intake manifold modifications, boosts top end power by slowing the mixture down and allowing any cylinder to draw from both barrels.
BIG97 Primaries also come with a swap-in fitting to provide ported vacuum for your aftermarket distributor, improving combustion efficiency in cruising mode for more torque and improvements in fuel mileage too.
Finally, everything that’s made the Genuine Stromberg 97 so popular over the past ten years is built into the all-new BIG97: An early style cast iron base for low heat transfer. A reinforced air horn casting to eliminate warping and leaks. High tech gaskets. Stainless steel levers, linkage and springs. Original-style riveted throttle and choke shafts. And more.
Stromberg BIG97 Primary and Secondary carburetors are available separately or as a ready-to-run Tri-Power (one Primary and two Secondaries), with extra savings available on packages with Stromberg’s exclusive Small Block Chevy linkage and fuel line.
Further reading on all of the new BIG97 features and benefits is available on the Stromberg Tech Center at www.stromberg-97.com:
- BIG97 Installation Guide
- How To: Maximise BIG97 intake flow
- The All-New BIG97 Tri-Power. In Detail.
- BIG97 FAQs
The new Genuine Stromberg BIG97 Tri-Power is available through the worldwide Stromberg dealer network. Further details and help with installation is available at www.stromberg-97.com.
Say hi to our new fuel fitting. 9080K-E – Extended SuperSeat fuel hose fitting. Most people won’t need one of those – the regular 9080K fitting will do a great job. But in certain circumstances – mostly on 6×2 intakes – this is a great idea that solves a real problem.
On a typical Stromberg 97 3×2 set-up, most people mount the linkage with the sliding rod pushing the back carburetor open, but on a 6×2 progressive linkage, the sliding rods on each bank must pull the front carbs open instead, because of clearance issues with the back-bar. This WAS a problem because on a front-facing 3×2 progressive, the sliding rod (in the top adjustment hole) would rub on the underside of the center carburetor hose. You can’t move the sliding rod to a lower hole because the bottom hole is taken by the link to the back-bar. And you can’t swap them or those back-bar links hit the back carb fuel inlet! You may have seen pics of old school 6×2 progressives with slider rods bent like a big L shape to miss that center carb fuel inlet.
9080K-E simply moves the hose and clamp a little further out to leave a gap for the sliding rod to clear. So no linkage interference and no bendy rods either.
Of course, there are rare instances on a 3×2 where the progressive linkage must pull the front carb open, and again, the 9080K-E is ready to solve the same clearance issues. Available at your local Stromberg dealer now!
Back in the summer we launched our first Big Bore 97 fuel line – 9146-BIG for Small Block Chevy intakes – backed by a range of new fittings to make installation easy. You can click the links to read more about them. This time, we’re announcing that all of these – and more – are now available in traditional chrome or hand-polished finish to complement your chrome 97s.
We’ve added pictures of the whole range below, with the new part numbers so you know what to order. All you need to remember is that the fuel block has 1/4NPT threads at both ends so you can input your fuel line (solid or hose) from front or back, and either plug the other end off or add a fuel pressure gauge.
This 97 fuel line is designed for use with our BIG 97 carburetors which have special S-jet inlet valves to accept the 5/16in line (regular 97s need 1/4in line). To use the new 9146-BIG-P with regular 97s you MUST swap the S-jets out for 9564K-BIG-C chrome S-jets. The new 9146-BIG-P line comes with special chromed Ford Nut style compression fittings to fit the bigger line and S-jet, but they are also available separately as kit 9081K-BIG-C in case you want to build your own polished 5/16in fuel lines.
Finally, while we’re looking at new polished fuel fittings, now’s a good time to mention fully polished versions of our banjo spacers (9086K-P) and ‘fuel gauge banjos’ (9082K-G-P and 9083K-G-P).
Our new Big Bore 97 fuel line and fittings are part of the Stromberg Linkage & Fuel Delivery range, available from a network of Genuine Stromberg dealers worldwide. As always, full instructions are included with the fuel line and further help is available via the Stromberg Tech Center at www.stromberg-97.com .