What is the top speed of a 1968 Dodge Dart?
There isn’t a single top speed for all 1968 Dodges Dart; speeds depended on engine and gearing, but typical values range from about 95 mph for base six-cylinder models to roughly 120–135 mph for the higher-output V8 versions in performance trims.
The question covers the entire 1968 Dodge Dart lineup, which included several engines and configurations. To address it clearly, this article lists the common engine options and then estimates top speeds by engine, while noting factors that can push actual speeds higher or lower in real-world driving.
Engine options available in the 1968 Dodge Dart
The following list outlines the main engine choices offered in the 1968 Dart family and how they generally affected performance.
- Slant-six: 198 cu in (3.3 L)
- Slant-six: 225 cu in (3.7 L)
- 273 cu in V8 (small-block)
- 318 cu in V8 (small-block)
- 340 cu in V8 (small-block) – available in Dart Swinger and other performance-oriented variants
The Dart lineup also offered a range of transmissions (manual and automatic) and varied rear-end gearings that significantly affected final speed. Vehicle weight, tire size, and condition also influenced real-world performance.
Estimated top speeds by engine configuration
These figures reflect approximate top speeds reported in period road tests and brochures for representative engine options. Real-world results vary with gearing, condition, and tuning.
- Slant-six 198/225 cu in: about 95–105 mph (152–169 km/h)
- 273 cu in V8: about 110–120 mph (177–193 km/h)
- 318 cu in V8: about 120–130 mph (193–209 km/h)
- 340 cu in V8 (Swinger/other performance variants): about 125–135 mph (201–217 km/h)
Gearing and other factors can move these numbers. A Dart with a higher numerical rear axle ratio (and a manual transmission) could approach the upper end of these ranges, while stock automatics with milder gearing might sit lower.
Gearing and performance considerations
In practice, the most influential variables are axle ratio and transmission. A Dart equipped with a higher gear ratio and a manual transmission typically yields higher highway speeds than one with a lower ratio and an automatic. Tire size and condition also play a major role in speed stability at high velocity.
In short, the top speed of a 1968 Dodge Dart varies by model and setup. Most base models with inline-sixes hover around the mid-90s mph, while higher-performance V8 configurations can reach into the 120s–130s mph range under optimal conditions.
Summary
The 1968 Dodge Dart did not have a single universal top speed. Typical ranges span roughly 95–105 mph for base six-cylinder models to about 120–135 mph for V8-powered variants in favorable configurations. For precise figures, consult the original brochure or factory test data for a specific model, engine, and gearing combination.
