The engine has always been the heart of Corvette and, for the 2001 model year, the standard Corvette engine — the LS1 — beats a little stronger. The improved LS1 produces more torque over a broader range. The engine cranks out 350 lb.-ft. at only 2,800 rpm and a full 375 lb.-ft. (360 on automatics) at 4,400 rpm. In comparison to the previous LS1, which produced a peak torque of 350 lb.-ft. at 4,400 rpm. Not only has torque output increased, the bandwidth of the torque curve is wider by an average of five percent over the LS1's entire operating range. The increased torque improves everyday driveability and passability, with greater low-end responsiveness in normal driving conditions.

New Camshaft Profile for the LS1 Engine

The LS1 has a new camshaft profile that contributes to the bandwidth of the torque curve. The lift of both the intake and exhaust valves was slightly reduced, the overlap of the intake and exhaust valves was reduced, and the overall valve timing was decreased.

Better Performance through Improved Breathing

The LS1 engine has a new intake manifold made of a composite nylon material. This feature reduces air intake restriction and improves flow into the heads, for better breathing.

In order for an engine to achieve peak performance, it must be able to draw in sufficient air for its combustion charge. In addition, the air must flow smoothly through the intake manifold into the combustion chamber with a minimum amount of disturbance to allow maximum efficiency of the combustion burn.

The new intake manifold permits both, making the LS1-equipped Corvette a little more powerful, and the LS6-powered Corvette Z06 a whole lot more powerful — but more about the Z06 later.