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This Owners Guide contains important information regarding the operation and maintenance of your 2003 Corvette. In order to obtain maximum enjoyment and usage from your car, we suggest that you familiarize yourself with the contents...
Built from 1997 until 2004, the C5 Corvette is considered one of the most reliable. Given its increasing affordability, the C5 offers a lot of power and performance at great value. How its maintained and cared for can dramatically affect the overall quality.
Another decade – another milestone anniversary edition Corvette. However, the 2003 model year was especially significant as it marked the 50th year of the Corvette’s production at Chevrolet.  To commemorate a half-century of manufacturing, every Corvette built in 2003 was adorned with special “50th Anniversary” badging – a unique “50” badge on each of the front fenders above the bodyside coves, and a special crossed flags badge that included “50 Anniversary” badging.
LS1 Crate Engine
The LS1 is the spiritual successor to the “small block V8” that GM uses in rear-wheel-drive cars, trucks, and vans. It was introduced in 1995 as the “GEN III” engine and it only shared rod bearings, lifters, and bore spacing with its predecessors (which was in production 1955 until 2003). Little did GM expect for the LS1 has become a legend.
Corvette LS6 engine closeup
The LS6, which served as the motivating force behind the 2001-2004 Corvette Z06, bested the prior LS1 in virtually every facet of performance and proved formidable, both on the track and street. Perhaps more importantly, this engine provided a glimpse into the LS platform’s future, and its ability to constantly evolve.
A successor to the ZR-1 made its debut in 2001 as the Z06, giving a nod to the high-performance Z06 version of the C2 Corvette of the 1960s. The Z06 uses a tuned version of the standard LS1 engine (designated the LS6), with a higher power output of 385 hp (390 PS; 287 kW), later bumped to 405 hp (411 PS; 302 kW) starting in 2002.