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Even in its stock form, the Ford Model T was a decent performer for its era. Charlotte’s Web author E.B. White recalled in 1936, “Its most remarkable quality was its rate of acceleration. In its palmy days the Model T could take off faster than anything on the road.”
One of the best ways to go even quicker in a Model T has always been to swap out the flat cylinder head for an aftermarket job utilizing overhead valves—actuated either by push rods or overhead cams. The engine on these pages—part of a genuine pre-World War II gow job in the collection of Lang’s Old Car Parts in Baldwinville, Massachusetts— features the venerable Frontenac T (for “Touring”) overhead-valve head.
Frontenac was a creation of the Chevrolet brothers. Initially, the Frontenac name was associated with the brothers’ race cars, but much like Enzo Ferrari a generation later, Louis Chevrolet had ambitions of turning his prewar Frontenac race team into a producer of road-going automobiles.
Unfortunately, the road-car program was a victim of the postwar recession of 1920-’21 and Frontenac retired from the business of building automobiles before it started. The economy at-large was in crisis, and the brothers were looking for quick cash. With more than half of all cars on the road being Ford Model Ts and the proportion of low-budget racing cars being closer to 99 percent, they recognized an opportunity.
The brothers enlisted C.W. Van Ranst, chief engineer of their road-car effort, to design an overhead-valve conversion for the Ford engine. Van Ranst created a cylinder head that was both powerful and durable. Coupled with the brothers’ reputation, the Frontenac head was a winning formula.
The “Fronty” was hardly the first overhead- valve conversion for Fords, nor was it necessarily the most powerful, but it was the most successful, with around 10,000 of all types sold. The original Fronty head featured a single intake port and triple exhaust ports arranged in a crossflow design. It came in three varieties (Racing, Speedster, and Touring/Truck) and all three used the same 1:1.5 rocker-arm ratio to actuate two 17/8-inch valves per cylinder.
The addition of a Fronty T to a standard Ford automobile would increase horsepower from 20 to 33. They proved a popular addition to many mostly stock cars and trucks, and drove the bulk of production. As you may have guessed, however, our feature engine is not “mostly stock.”
Bolted to the Fronty’s single intake port is a Juhasz barrel-valve carburetor, patented in 1924 and advertised at least as far back as 1918, and very similar in appearance to contemporary products from Master, Miller, and Winfield. Car owner Steve Lang told us that the Juhasz was more popular on the East Coast, whereas Master and Miller carbs found more success on the West Coast.
After the mixture passes through the Juhasz carb, distributed via the Fronty head, and squeezed by what we can only assume are some kind of aluminum replacement pistons (everybody used them), it is ignited by a Delco-Remy distributor, adapted via what may be a vintage Bosch front-drive. Keeping everything lubricated is an auxiliary oiling system adapted from a 1920s Chevrolet.
Because the engine hadn’t been apart and the history of this car was somewhat murky, it’s not known what kind of camshaft was actuating the valves, but it’s reasonable to think it’s not an original Ford piece. Nor does this example of 1920s hot-rod technology reside in a stock chassis. To see the full complement of gear that turned a 1925ish Ford runabout into a gow job worthy of 1940 traffic, visit www.HMN.com/fronty and get the rest of the story.
A Bite of History: by Mike Thies
1967 Mercedes-Benz 250SL
Introduced in late 1966 for a short, single-year production run, the 1967 Mercedes-Benz 250SL holds a special place in the “Pagoda” lineage (W113 series) as the rarest variant, with only about 5,196 units built. Positioned between the earlier 230SL and the later 280SL, the 250SL…
ContinuePosted by Michael Thies on August 14, 2025 at 7:30pm
A Bite of History: by Mike Thies
American Bantam “Woody” Station Wagon
The American Bantam Car Company was a small but innovative automaker based in Butler, Pennsylvania. Originally established as American Austin in the 1920s to produce miniature cars under license from the British Austin Motor Company, the firm reorganized…
ContinuePosted by Michael Thies on August 2, 2025 at 8:00pm — 1 Comment
A Bite of History: by Mike Thies
1958 Porsche 356 Speedster
The 1958 Porsche 356 Speedster marks the swan song of one of Porsche’s most iconic and minimalist models. Originally introduced in 1954 at the urging of U.S. importer Max Hoffman, the Speedster was designed to be a low cost, lightweight, stripped-down entry sports car that could double as a weekend racer, especially for the California sports car scene. With its low windshield,…
ContinuePosted by Michael Thies on July 14, 2025 at 5:22pm
A Bite of History: by Mike Thies
1948 Rover P3 Saloon
The 1948 Rover P3 Saloon marked a pivotal moment in the evolution of British motoring. Introduced in the immediate aftermath of World War II, the P3 was a bridge between prewar craftsmanship and the modern engineering ethos that would come to define Rover’s future. Although its styling retained many traditional elements, including an upright grille, separate fenders, and rear-hinged front…
ContinuePosted by Michael Thies on July 14, 2025 at 8:39am
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