- Baseエンジン: The baseエンジン for the 1970 Chevelle was a 250 cubic inch (4.1 liter) inline-six engine. This engine produced 140 horsepower and 245 lb-ft of torque.
- Availableエンジン: In addition to the base engine, the 1970 Chevelle was also available with a variety of optional engines, including:
- 307 cubic inch (5.0 liter) V8 engine
- 350 cubic inch (5.7 liter) V8 engine
- 396 cubic inch (6.5 liter) V8 engine
- 454 cubic inch (7.4 liter) V8 engine
The specific engine that was installed in a 1970 Chevelle depended on the trim level and options that were selected when the car was ordered.