Impala returns as a front-drive W-body. Base cars use the 180-hp 3400; LS gets the 200-hp L36 3800 and is the enthusiast-relevant starting point.
Platforms / GM W-Body / W2 / Chevrolet Impala
2000–2005 · W2
Chevrolet Impala
Chevrolet’s 2000–2005 Impala matters to W2 enthusiasts because the LS established the 3800 sedan foundation and the 2004–2005 SS finally added the 240-hp supercharged L67 plus firmer chassis tuning.
Model years2000–2005
Body4-door sedan
Enthusiast trimsLS · SS
Top engineL67 3.8 S/C
Halo years2004–2005 SS
MODEL-YEAR CHRONOLOGY
How the enthusiast story developed
The LS/3800 combination continues. Police and heavy-duty service variants add useful chassis and cooling context for builders, though equipment must be verified by RPO.
Impala SS arrives with the 240-hp L67 supercharged 3800, stronger transmission specification, 17-inch wheels and tightened suspension tuning.
Final year of the supercharged W2 Impala SS before the 2006 redesign moves Chevrolet into the W3 era.
POWERTRAIN GUIDE
Engines that define this model
| Trim / years | Engine | Factory output | Enthusiast role |
|---|---|---|---|
| Base | 3.4L LA1 3400 V6 | 180 hp / 205 lb-ft | Platform context / economical donor |
| LS | 3.8L L36 3800 Series II | 200 hp / 225 lb-ft | Naturally aspirated 3800 sedan |
| SS · 2004–2005 | 3.8L L67 supercharged 3800 Series II | 240 hp / 280 lb-ft | Factory performance halo |
OWNERSHIP & BUILD FOCUS
What matters now
Start with the right shell
An SS gives the right engine, identity and chassis package from the factory. A clean LS can still make sense for a subtle 3800 build, but conversion math adds up quickly.
Police parts ≠ automatic upgrade
Heavy-duty/police components can be useful, but enthusiasts should verify exact RPOs and compatibility rather than assuming every police-spec part is universally better.
Torque steer is part of the package
Front tires, engine/trans mounts, alignment, bushings and road surface all shape how a high-torque front-drive W2 puts power down.
REFERENCE STANDARD
Master Customs prioritizes factory-era documentation and period road tests, then uses established enthusiast references for service and ownership context. Equipment changed by model year and RPO; verify a specific car by VIN/RPO and factory service information before ordering parts.