How much horsepower does a Lexus LS 430 4.3 V-8 have?
The LS 430’s 4.3-liter V8 is rated at 278 horsepower in its standard US specification.
In more detail, the 1UZ-FE engine used in the 2000–2006 LS 430 produces 278 hp (208 kW) at 5,600 rpm and about 318 lb-ft (431 Nm) of torque at 3,400 rpm, paired with a 5-speed automatic transmission. This configuration powered the LS 430 during its production years, delivering smooth, refined performance for a luxury sedan of its era.
Engine specifications
Key specifications for the LS 430’s 4.3-liter V8 are summarized below:
- Engine: 1UZ-FE 4.3 L V8
- Horsepower: 278 hp (208 kW) at 5,600 rpm
- Torque: 318 lb-ft (431 Nm) at 3,400 rpm
- Transmission: 5-speed automatic
- Model years: 2000–2006 (LS 430)
In practice, horsepower figures can vary slightly by market and testing method, but the commonly cited US specification remains 278 hp.
Performance context
The 278 hp output, combined with the LS 430’s substantial weight and luxury-focused tuning, yields smooth highway performance and confident passing capability. The torque figure provides strong mid-range response, which is a hallmark of the 1UZ-FE family in a sedan of this class.
Real-world considerations
Owner experiences and professional reviews often emphasize refinement and smooth delivery rather than sheer speed. While not a sports car, the LS 430’s power level suits comfortable, effortless long-distance driving and everyday overtaking needs.
Summary
In short, the Lexus LS 430 with the 4.3-liter V8 is commonly rated at 278 horsepower, with about 318 lb-ft of torque. This power, paired with a well‑tuned automatic transmission and a refined chassis, contributed to the model’s reputation for smooth, confident performance during its production years.
