The standard 1999 Chevrolet 5.7-liter Vortec V8 is rated at 255 horsepower in most light-duty applications.
For 1999, GM’s 5.7-liter Vortec—part of the 5700 family—powered a wide range of vehicles, including the Silverado/Sierra, Tahoe/Yukon, Suburban, and Express vans. The performance profile centers on 255 hp with about 330 lb-ft of torque, a setup designed for everyday drivability and towing. While those numbers cover the typical configuration, actual output can vary slightly by model and emissions configuration.
Key specifications for the 1999 5.7L Vortec
Below are the core figures most owners and buyers would cite for the 1999 5.7 L Vortec engine in GM light-duty vehicles. The list consolidates horsepower and related performance data in a single reference.
- Horsepower: 255 hp
- Torque: around 330 lb-ft
- Displacement: 5.7 L (350 cu in)
- Fuel system: Electronic Fuel Injection (sequential port injection)
- Common applications: Chevrolet Silverado/Sierra 1500/2500, Suburban, Tahoe/Yukon, Express vans
These figures reflect the standard configuration used in most 1999 models. Engine tuning, emissions equipment, and drivetrain choices can influence exact results, but the 255 hp figure remains the baseline reference for this year.
Summary
In brief, the 1999 Chevy 5.7 Vortec engine delivers about 255 horsepower, with roughly 330 lb-ft of torque, across a broad range of GM light-duty trucks and SUVs from that model year.
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