Muscle cars and truck engines might seem like an unusual combination, but some iconic vehicles from the past sported precisely this setup. These cars not only boasted impressive speed but also delivered the rugged durability truck engines are known for. In this list, we explore seven muscle cars that secretly housed truck engines under their hoods.2) 1969 Dodge Charger R/TThe 1969 Dodge Charger R/T is a legendary muscle car known for its performance and style. Under its hood, the optional 440 Magnum engine was originally a truck engine. This engine was capable of delivering high torque, ideal for both high-speed pursuits and heavy-duty tasks. The Charger R/T remains a beloved classic, and its truck engine roots are part of what makes it so special.3) 1971 Ford Mustang Boss 351The 1971 Ford Mustang Boss 351 came equipped with a 351 Cleveland engine, which was derived from Ford’s truck engine lineup. Known for its reliability and performance, this engine allowed the Boss 351 to achieve impressive speeds and acceleration. The combination of Mustang styling and truck-engine power made it a popular choice among drivers seeking performance with a touch of durability.4) 1968 Mercury Cougar GT-EThe 1968 Mercury Cougar GT-E is often remembered for its luxurious design and powerful engine. The GT-E model featured a 7.0-liter V8 engine, which was adapted from Ford’s truck engines. This engine provided the Cougar with substantial horsepower and torque, allowing it to compete with other muscle cars of its era. The Cougar GT-E’s blend of elegance and muscle remains a classic example of American automotive engineering.5) 1972 Plymouth Road RunnerThe 1972 Plymouth Road Runner was an iconic muscle car that carried a 440 cubic inch engine, originally found in Chrysler’s trucks. Known for its raw power and performance, this engine helped the Road Runner achieve its reputation as a street and strip powerhouse. The car’s unassuming design combined with a capable truck engine made it a unique and exciting vehicle for enthusiasts.