by Modern Interpretation of the Legendary Engine
Prestige Motorsports specializes in creating updated versions of the famous Chrysler 426 Hemi V8 engine, using modern technologies and materials. Their 572 Hemi model gained an additional 2.4 liters of displacement and comes with an aluminum cylinder block and corresponding heads. The forged bottom end ensures that this engine effortlessly handles its power of 741 horsepower.
Historical Context
In the late 1960s, choosing a Hemi V8 engine for a Dodge or Plymouth was an expensive but guaranteed way to become the fastest driver in town.
Provided you could keep its dual carburetors in tune and the tires in reliable traction with the road.
The original engine was a real monster, but the question arises – how much more powerful could a classic Hemi be if recreated using modern technology? The answer to this question is provided by one workshop from North Carolina, although its services will not come cheap.
Evolution of the Hemi Engine
Chrysler produced three generations of Hemi V8 engines: the first appeared in the early 1950s, the second in the mid-1960s, and the third in the early 2000s. The Prestige Motorsports 572 Hemi engine is based on the 426 Hemi model from 1966-1971, which belongs to the golden era of muscle cars.
The original 7.0-liter engine, equipped with two four-barrel Carter carburetors, had a rated power of 425 hp, although some experts claim that this figure was intentionally understated for insurance and homologation reasons, with peak power recorded at 5000 rpm. In reality, at around 6000 rpm, it probably produced about 500 hp.
Power Measurement Methods
It should be considered that those figures were obtained using the old “gross” measurement system, where engines were tested on a stand with an open exhaust system and no power consumers. In 1971, preparing for the transition to more realistic “net” figures, Chrysler provided both measurement systems and stated that the Hemi produced only 350 hp under the “net” system.
Even considering the additional rpm, by modern standards it would hardly exceed 400 hp. This was an impressive figure for 1966, but it couldn’t compete with modern turbocharged Hellcat engines, whose power exceeds 700 hp.
Modern Technology from Prestige Motorsports
This is where the Prestige Motorsports version of the Hemi comes in. With 2.4 liters more than the already quite large original, the 9.4-liter 572 Hemi is built using components from the best suppliers. The sturdy forged bottom end provides not only 700 hp of power but also durability.
Edelbrock aluminum cylinder heads are standard, providing a significant reduction in weight compared to the standard Hemi. Buyers can also replace the Indy cast-iron block with an aluminum one to further reduce weight.
Reliability and Power
Thanks to the use of a roller bearing camshaft and roller rockers, Prestige claims the engine delivers a stable 700 hp. In a recent video on the company’s YouTube channel, a 572 assembly was shown producing 741 hp at 5900 rpm and an incredible 697 lb-ft of torque at 4400 rpm.
Although this engine can be installed in a classic Mopar muscle car, Prestige wisely advises buyers to first ensure that the rest of the car’s components are ready for such loads.
The Cost of Power
A fully assembled and dyno-tested engine costs about $31,000, which is a significant investment. But one can only imagine the pleasure of installing one of these engines in something completely inconspicuous, such as a four-door Plymouth Satellite with stock wheels.
If 741 horsepower ever becomes insufficient, you can always turn to Prestige’s insane Power Adder 572 Hemi version, which is ready for forced induction systems and capable of producing over 1000 hp.
This project demonstrates how American automotive traditions are combined with modern technologies. Although the cost of such engines remains high, they offer a unique opportunity to combine classic design with modern power and reliability. The market for restored and modified engines continues to grow, indicating a constant demand for automotive rarities with history.
