How much horsepower does a Lexus sc430 V-8 have?
The Lexus SC430’s 4.3-liter V-8 typically delivers about 288 horsepower in standard U.S. specifications, with torque around 317 lb-ft. Some markets or older tests list roughly 290 horsepower, and exact numbers can vary slightly by year and measurement method.
Engine configuration and outputs
The SC430 uses the 4.3-liter V8 known as the 3UZ-FE, part of Lexus’ UZ family, paired with a five-speed automatic transmission. This setup is tuned for smooth highway performance and a refined V-8 note. The commonly cited rating for U.S. models is SAE net horsepower around 288 hp at 5,400 rpm and peak torque near 317 lb-ft at about 4,000 rpm.
Official power figures
The following figures are the most commonly cited specifications for the SC430’s 4.3-liter V8 across model years.
- Horsepower: 288 hp (SAE net) at 5,400 rpm
- Torque: 317 lb-ft (430 N·m) at approximately 4,000–4,400 rpm
- Displacement: 4.3 L (4308 cc) V8
These numbers come from Lexus brochures and automotive testing sources, reflecting typical, widely reported values. Real-world performance can vary slightly due to factors such as vehicle condition and measurement conditions.
Context and caveats
Engine output figures can differ slightly by market, year, and the testing standard used (SAE net vs. gross). For the SC430, there were no major changes to the engine output over its 2002–2010 production window, but regulatory changes can cause small variations in labeling and testing results.
Summary
In short, the Lexus SC430’s 4.3-liter V-8 produces around 288 horsepower and about 317 lb-ft of torque in standard U.S. specifications. The figure has remained largely consistent across most model years, contributing to the SC430’s refined, capable highway performance as a convertible grand tourer.
