(optional 1996-97, std. 1998-99) 2004–2005 Chevrolet Impala SS 2004–2005 Chevrolet Monte Carlo SS Supercharged 1996–1999 Oldsmobile Eighty-Eight LSS (limited) 1996–1999 Pontiac Bonneville SSEi (H-body) 2000–2003 Pontiac Bonneville SSEi (G-body) 1997–2003 Pontiac Grand Prix GTP / GTX (SLP) 1996–2004 Holden Commodore VS (series II), VT, VX, VY 1996-2004 Holden Caprice and Statesman VS (Series I, II & III), WH, WK 2001–2004 Holden Monaro (V2) CV6 Series III The Series III engines include many changes. The upper and lower intake manifold is now aluminum on the naturally aspirated models. Intake ports are mildy improved, intake valves (instead of as on Series II) and exhaust valves were introduced in 2003 engines, just before switching to Series III. Electronic throttle control is added to all versions, as is returnless fuel injection. Stronger powdered metal sinter forged connecting rods are used in 2004+ supercharged, and 2005+ naturally aspirated engines, instead of the cast iron style from Series II engines. Emissions are also reduced. In 2005, it was the first gasoline engine in the industry to attain SULEV (Super Ultra Low Emissions Vehicle) emissions certification. Also note that Series III engines are the base for any 3800 produced for the 2004 year and up. This means the same block, heads, & connecting rods apply to any remaining Series II engines made after 2004 also. The difference is that Series III engines received the new superchargers (Generation 5 - Eaton M90 - if equipped), intake manifolds, fuel systems, powdered connecting rods, as well as larger intake valves, drive by wire throttle body and electronics. L26 SIII Naturally Aspirated The L26 is the Series III version of the 3800. It is still a design. Compression remains at 9.4:1 as with the L36, but the aluminum upper and lower intake (2004+) and stronger connecting rods (2005+) are the primary physical changes. The powdered metal connecting rods were meant to be introduced in 2004 along with the L32, but the GM plant in Bay City, Michigan that supplies the Flint, Michigan plant could not achieve the desired production dates in time for that engine year. This engine was used in the following vehicles: 2004–2008 Pontiac Grand Prix 2005–2009 Buick LaCrosse/Allure 2006–2008 Buick Lucerne L32 SIII Supercharged The L32 is a supercharged Series III. Introduced in 2004, the main differences between the L67 and the L32 are the L32's electronic throttle control, slightly improved cylinder head design, and updated Eaton supercharger,