In 2007, the Impala offered two gasoline engines in the U.S.: a 3.5-liter V6 as the standard powerplant and, in the performance-oriented Impala SS, a 5.3-liter V8. The base engine provided everyday practicality, while the SS delivered a noticeable boost in performance.
Below is a concise breakdown of those engine options, including typical power outputs and which trims they appeared in.
Engine options for the 2007 Impala
Two engines were available in the U.S. market for the 2007 Impala. The list below shows the main specifications attached to each option.
- 3.5-liter V6 — Approximately 217 horsepower and around 214 lb-ft of torque. Used on the base LS and LT trims.
- 5.3-liter V8 — About 303 horsepower and 323 lb-ft of torque. Exclusive to the high-performance Impala SS variant.
In summary, most buyers encountered the 3.5L V6, while enthusiasts seeking faster acceleration had the 5.3L V8 in the SS model.
3.5-liter V6 details
The 3.5-liter V6, often labeled as the base engine for the 2007 Impala, is a 60-degree V6 with around 217 hp and about 214 lb-ft of torque. It was paired with a four-speed automatic transmission and designed for smooth, everyday driving and respectable fuel economy for a family sedan.
5.3-liter V8 (Impala SS) details
The Impala SS trim used a 5.3-liter V8 that delivered roughly 303 hp and 323 lb-ft of torque. This engine provided significantly quicker acceleration and a more aggressive character, befitting the performance-oriented SS model within the lineup.
Which trims used which engine?
The base LS and mid-level LT trims were equipped with the 3.5-liter V6. The high-performance Impala SS trim was the only model offered with the 5.3-liter V8.
Summary
For the 2007 Chevy Impala, buyers had two gasoline engine options: a 3.5L V6 for everyday comfort and economy, and a 5.3L V8 for SS-level performance. The 3.5L powered the majority of units, while the 5.3L V8 distinguished the SS as the performance flagship of the lineup.