Just A 7+ decades Old Dog still Learning New Tricks

So why did I block you? Can you read?

This Ford Model T engine fitted with a Gallivan Dual Overhead Cam (DOHC) cylinder head conversion is one of the rarest and most fascinating examples of early American performance engineering. While Henry Ford's humble 177 cubic-inch inline-four was originally designed for simplicity, reliability, and affordability, inventive engineers and racers soon discovered that it offered remarkable potential for modification. Among the most ambitious upgrades ever created was the Gallivan DOHC conversion, a highly sophisticated aftermarket cylinder head that transformed the dependable Model T engine into a serious high-performance powerplant. Produced in extremely limited numbers, the Gallivan conversion became a showcase of engineering ingenuity during the formative years of American motorsport.

The Gallivan cylinder head replaced the Model T's conventional side-valve layout with a beautifully engineered dual overhead camshaft valvetrain, dramatically improving airflow, combustion efficiency, and high-rpm capability. Precision-machined aluminum components, overhead valves, and a carefully designed cam-drive system allowed the engine to breathe far more efficiently than Ford's original design. Builders often paired the conversion with high-compression pistons, larger carburetors, racing ignition systems, and lightweight rotating assemblies, creating engines that delivered performance unimaginable for a stock Model T. The conversion not only increased horsepower but also demonstrated that advanced valvetrain technology could unlock the hidden potential of one of America's most common automobile engines.