Tag: Stromberg 97

Stromberg Carburetors – Jim O’Clair @Hemmings

Stromberg Carburetors – Jim O’Clair @Hemmings

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One of the most popular carburetor choices used by Ford and Lincoln, as well as several other auto manufacturers, is the Stromberg two-barrel. The most desirable of these is the “97;” however, four other versions were also offered by Ford: the “L,” the “40,” the “48” and the “81.”

The model “40” was the first generation of the Stromberg dual-downdraft or two-barrel design and saw limited use on some of the early 1934 V-8s. The 48s were the original-equipment carburetors for the 1934 and 1935 Ford flathead V-8s. The 97s were offered on the 85hp V-8s from 1936 to early 1938, and the 81s powered the 60hp V-8s in 1937 and ’38. Stromberg also produced a model “L” which had a one-inch venturi and was used only on 1936-’37 Lincoln V-12 engines.

Stromberg 97 cores can be difficult to find, but can be identified by a raised “97” cast into the center section; the Indiana-built units had an “EE-1” stamped onto the base. Units built in the Elmira, New York, factory can be identified by a “1-1” casting number on the base. Although the EE-1 castings are the most sought after, the New Y-built units were an improved design that had better response coming off idle. The model 48 units, rated at 170 cfm, share the same base casting as the 97s but had a larger 1-1/32-inch bore diameter. The 97s got their name because of the 31/32-inch-bore diameter (.97-inch) and were rated at 155 cfm. Model 81s have a 13/16-inch bore diameter (.8125-inch) and were rated at 125 cfm. All three are great for using in pairs on smaller-cubic-inch engines. The model “L” was rated at 160 cfm, and installing them on larger-displacement engines will usually require a 3 x 2-barrel or 3-deuce setup.

So what can they fit? There are a lot of aftermarket Edelbrock, Weiand and Offenhauser intake manifolds that will accommodate the 3-bolt Stromberg mounting base. Obviously, Ford flathead manifolds of the 1930s are their primary candidates. But the Slingshot manifold that was designed by Vic Edelbrock Sr. was just the beginning of intake and Stromberg configurations that have been offered over the last 60 years. Y-shaped manifolds are also available, allowing you to install two Strombergs on a single-barrel manifold. There are base plate adapters to convert a single-barrel manifold to the 3-bolt Stromberg 2-barrel and to adapt a four-barrel spread-bore manifold to accept dual 97s. Plus, there are 3 x 2 and 4 x 2, manifolds for 1953-’56 Chrysler Hemis and 1955-’86 small-block Chevys. You can even still find 6 x 2 manifolds for most Chevy engines. All of these manifolds are compatible with Strombergs as well as the Holley model 94, another 3-bolt two-barrel performance carb that was built by Holley and Chandler Grove for Ford, as an alternative to a Stromberg carburetor.

Read the rest of the article here

Stromberg Carbs are available new, information can be found here

New Stromberg 97 on my 1929 Model A Sport Coupe.

Stromberg 97 and Secrets of Speed Scalded Dog Manifold Upgrade for the 1929 Model A Ford Sport Coupe

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Some time ago before my Dad passed away we had chatted about what upgrades might have been done to the coupe back in his days. He was born in 1936. Before I managed to get the parts my Dad sadly passed away.

So as a bit of a tribute I bought the following parts


Stromberg 97 Carb – from Dave O’Neil (O’Neill Vintage Ford)
Scalded Dog Manifold – from Charlie Yapp (Secrets of Speed)
Chrome Air Scoop – from Dave O’Neil (O’Neill Vintage Ford)
Facet Electric Fuel Pump – Carbuilder.com
Petrol King Fuel Pressure Regulator – Carbuilder.com

Fuel Pressure Gauge – Carbuilder.com
Braided Fuel Line – Carbuilder.com
Copper Fuel Line – Amazon
Rubber Fuel Pipe – Carbuilder.com
Various Connections and Unions
Jubilee Clips -Screwfix
Fuel Pump Relay – eBay
Rocker Switch – eBay


Parts I already had


MSD plug lead set and tool
Modern distributor cap
Wire and connectors

My friend Austen fabricated the required new throttle link rod from the dimensions provided by Charlie

First job is to remove the existing manifold and carburetor

This is a Model B carburetor fitted by a previous owner, this carb has had a brazed repair in the body which whilst a bit rough and ready worked fine.

These inlet manifold fixing bolt holes where not used with the original manifold, but are needed for the new one. These were cleaned out with a tap.

The carburetor and manifold were assembled and bolted into place

First attempt at wiring the fuel pump and the use of braided fuel line. This looked quite bad as the wiring was temporary to get home from my friends workshop. I didn’t like the look of the braided line.

Decided to go with copper fuel line with rubber termination to solve any issues with engine movement that may cause leaks.

The fuel pump and regulator fit nicely in the chassis rail, these were removed to change 90 degree elbows for a better pipe run

First attempt with copper/rubber fuel pipe as you can see the wiring is a lot tidier, you can also see the pipe run between the pump and the regulator. The wiring will be tidied and weatherproofed further. Use of the screwed connector has been chosen to make a pump change on the road easier.

This is a view from above, quite tidy but still not happy! Too much pipe run above the exhaust manifold and the carb feed pipe is not secured enough for my liking.

At this point a leak from the sediment trap was noticed, caused by the failure of the gasket

The reproduction item is made of neoprene but a horrible fit and had to be cut to fit. Bowl and trap were cleaned and then reassembled

Wasn’t happy with the throttle feel so spaced with some fibre washers, a lot better now. The throttle also stuck a little, so the joints on the rods were lubricated and Clive at Stromberg provided a nifty little solution to snap the throttle shut. This also doubled as a safety measure as per Charlie’s advice in case of linkage failure.

As you can see runs very well, starts better, warms up quicker, very happy.

More once I get a few trips under my belt with the new set up.