3800 Series III

[Tenom]

Just wondering if any knows if there are any signifigant changes between the II series and the III series, improvements, design changes, etc.

[ChronoGN]

Re: 3800 Series III

Series III

The Series III motors include many changes. The intake manifold is all-aluminum on the naturally aspirated models. Electronic throttle control is added, as is returnless fuel injection. Stronger, powdered metal connecting rods are used (2004 only), instead of the cast iron style from Series II engines. Emissions are also reduced.
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L26 Naturally Aspirated

The L26 is the Series III version of the 3800. It is still a 3.8 L design.

This engine is used in the following vehicles:

* 2004+ Pontiac Grand Prix
* Buick LaCrosse
* Buick Lucerne

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L32 Supercharged

The L32 is a supercharged Series III. Introduced in 2004, the main differences between the L67 and the L32 is the L32's electronic throttle control, slightly improved cylinder head design, and updated Eaton supercharger, the Generation 5 M90. HP output is up to 260 hp in the Grand Prix GTP, although excessive torque management in the PCM results in the 2004+ being no faster than the 1997-2003 Grand Prix GTP in stock form.

Applications:

* Pontiac Grand Prix GTP, GTP Comp G, & opt on 06 GT

[Tenom]

Re: 3800 Series III

So I'm assuming there are no more RWD applications for this engine?

[DanT]

Re: 3800 Series III

Our beloved F-bodies were the last RWD application for the 3800. Unless I'm overlooking something, but I doubt it.