Grand National Car Engine
Introduction
The Grand National car engine is a high-performance engine that was used in the NASCAR Grand National series from 1950 to 1970. The engine was based on the Chevrolet small-block V8, but it was extensively modified to produce more power and torque.
Design
The Grand National car engine had a displacement of 327 cubic inches (5.36 liters) and featured a single four-barrel carburetor. The engine was equipped with a solid lifter camshaft and a high-compression ratio of 11:1. The engine produced approximately 425 horsepower (317 kilowatts) at 6,500 rpm and 420 pound-feet (570 newton-meters) of torque at 4,500 rpm.
Performance
The Grand National car engine was one of the most powerful engines of its time. The engine helped to power the Chevrolet Impala to four consecutive NASCAR Grand National championships from 1961 to 1964. The engine was also used in the Chevrolet Chevelle SS and the Pontiac GTO.
Legacy
The Grand National car engine is considered to be one of the most iconic engines in NASCAR history. The engine helped to define the classic muscle car era and it remains a popular choice for hot-rodders and drag racers.
Technical Specifications
- Displacement: 327 cubic inches (5.36 liters)
- Bore: 4.00 inches (102 mm)
- Stroke: 3.25 inches (83 mm)
- Compression ratio: 11:1
- Horsepower: 425 horsepower (317 kilowatts) at 6,500 rpm
- Torque: 420 pound-feet (570 newton-meters) at 4,500 rpm
- Valvetrain: Solid lifter camshaft
- Carburetor: Single four-barrel carburetor
Conclusion
The Grand National car engine is a true American icon. The engine helped to power some of the most legendary muscle cars of all time and it remains a popular choice for performance enthusiasts today.
