The 2004 Pontiac GTO, equipped with the LS1 engine, has 350 horsepower.
Understanding the GTO LS1
The term "GTO LS1" specifically refers to the 2004 model year of the resurrected Pontiac GTO. This generation of the GTO was a rebadged version of the Australian Holden Monaro, imported to North America. It marked a significant return for the iconic nameplate, featuring modern V8 powerplants that captivated enthusiasts.
The LS1 engine is a 5.7-liter (346 cubic inch) V8 small-block engine, part of GM's highly successful Gen III architecture. Known for its robust performance and tunability, the LS1 was a popular choice across various GM performance vehicles of its era.
Horsepower Breakdown by Model Year
While the question specifically asks about the LS1, it's worth noting the evolution of the modern GTO's powertrain:
| Model Year | Engine | Displacement | Horsepower (hp) | Torque (lb-ft) |
|---|---|---|---|---|
| 2004 | LS1 | 5.7L V8 | 350 | 365 |
| 2005-2006 | LS2 | 6.0L V8 | 400 | 400 |
As you can see, the 2004 model's LS1 engine delivered a stout 350 hp, providing strong acceleration and a distinctive exhaust note. The subsequent LS2 engine, introduced in 2005, offered an increase to 400 hp, further enhancing the car's performance capabilities.
Legacy of GTO Performance
The GTO nameplate has a rich history synonymous with powerful engines. Even in its earlier iterations, Pontiac consistently pushed the boundaries of performance. For instance, the 1967 Pontiac GTO's standard engine saw its power rating rise to 350 horsepower, indicating a long-standing commitment to high-performance powertrains, a tradition carried forward by the LS1-powered models. This lineage highlights the GTO's enduring appeal as a muscle car icon.
Key Features of the LS1 GTO
- Engine: 5.7L LS1 V8
- Transmission Options: 4-speed automatic (4L60-E) or 6-speed manual (T-56)
- Performance: Capable of 0-60 mph in approximately 5.3 seconds and a quarter-mile time in the low 13-second range.
- Suspension: Independent rear suspension (IRS), a modern advancement over traditional solid-axle designs found in many earlier muscle cars, contributing to improved handling.
The GTO LS1 provided a compelling blend of classic muscle car aesthetics with modern engineering, making it a beloved vehicle among performance enthusiasts.
