These engines feature cast iron blocks and aluminum heads, and use the same 60° vee bank as the 60° V6 family they are based on, but the new 99 mm (3.90 in) bore required offsetting the bores by 1.5 mm (0.059 in) away from the engine center line.

[1] The assembly line for this engine was manufactured by Hirata Corporation at its powertrain facility in Kumamoto, Japan.

As of the 2012 model year, GM no longer sells these engines in any U.S. market vehicles.

According to a GM press release from October 2002, the 3500 V6 offered improved performance and fuel efficiency, as well as reduced emissions and NVH compared to the 3400 V6.

Applications: Note: GM often refers to this engine in its literature as a "3.5L V6 with Variable Valve Timing."

The LZE 3500 is an OHV flexible-fuel engine based on the 3.5L LZ4 V6 (it can use either plain gasoline or E85) and includes continuously variable cam timing (fixed overlap).

A computer-controlled plenum divider, along with the VVT cam function, improves efficiency across a broader RPM range.

Applications: The LGD 3900 is a flexible-fuel version of the LZ9, and like its 3.5L LZE counterpart, it can run on E85, pure gasoline, or any mixture of the two.