[align=center]Mod Bigg `J -Jason-,[/align][align=center]I hope that the below information helps[/align][align=center]explain the use of the 3.9L Engine[/align][align=center][:-][/align][align=center]3.9 Engine[/align][align=center]Bore remains 99mm (3.9in) but stroke is increased to 84mm (3.31in) for a displacement of 3880cc (237in³).[/align][align=center][/align]LZ9[align=center]The new LZ9 3900 features Variable Cam Timing, a new feature on a pushrod engine, roller rocker arms and has a variable resonance intake manifold. It produces 220 hp (179 kW) and 242 ft·lbf (332 Nm) torque, with a wide torque curve. A 3-valve version may be introduced later.[/align][align=center]Applications:[/align][align=center][:-][/align][ul][*][align=center]2006 Pontiac G6 GTP[/align][*][align=center]2007-present Pontiac G6 GT[/align][*][align=center]2006-2007 Chevrolet Malibu SS[/align][*][align=center]2006 Chevrolet Impala/Monte Carlo[/align][*][align=center]2006-present Buick Terraza/Chevrolet Uplander/Pontiac Montana/Saturn Relay[/align][*][align=center]The 3.9 was only in the Monte Carlo[/align][*][align=center]LT3 & LTZ in 06[/align][/ul][align=center][/align]LZ8[align=center]The LZ8 3900 has the same VCT technology as the LZ9. The 2007 model year introduces the Active Fuel Management system (formerly known as Displacement on Demand), which can turn off a bank of cylinders under a light load for increased fuel economy. Output is slightly lower than the LZ9 at 233 hp (174kW) and 240 ft·lbf (332N·m).[/align][align=center]This engine is used in the following vehicles:[/align][ul][*][align=center]2007-present Chevrolet Impala/[/align][/ul][align=center][/align]LGD[align=center]The LGD 3900 is a flexible fuel version of the LZ9, and like its 3.5L counterpart the LZE, it can run on E85, pure gasoline or any mixture of the two. It is currently only available on GM's "Crossover Sport Vans". Output is identical to the LZ9.[/align][ul][*][align=center]2007-present Buick Terraza/[URL=http://en.wikipedia.org/

 

Good job Space, as usual. Yes the 3.9 is probably going to be around for awhile since it's a brand new engine in '06.

 

Sweet.

 

I haven't seen any that I know of but the '07 Impala should have the 3.9 under the hood.

 

Now we just need to get some aftermarket performance parts to hit the shelves. Would be great if the base Camaro has the LZ9 in it like I've heard somewhere that it might.

 

[ul][*]significant horsepower and torque increases [*]dramatic hydrocarbon reductions [*]improved fuel economy [/ul]
GM Powertrain announced today it will deliver a 3.6-liter V-6 gasoline engine with direct injection and variable valve timing (VVT) technologies in the 2008 model year. A vehicle application will be announced later in the year.
Additionally, it was forecast that by the end of 2008, GM will produce as many as 200,000 vehicles globally with direct injection technology, and by 2010, GM projects one out of every six GM vehicles in North America will be equipped with a direct injection engine.
The application of direct injection technology to the 3.6-liter VVT engine – a member of GM Powertrain’s family of high-feature V-6 powerplants used on cars and trucks around the world – contributes greatly to a 15-percent increase in horsepower over the current levels that range from 240 to 267; an 8-percent increase in torque, and up to a 3-percent improvement in brake-specific fuel consumption (BSFC). An approximate 25-percent reduction in cold-start hydrocarbon emissions is also achieved.
With direct injection, precisely metered fuel is delivered directly to the combustion chamber, which has a cooling effect in the chamber. Cooling the incoming air charge enables a higher compression ratio, which also improves engine efficiency. Less fuel is required to produce the equivalent horsepower of a conventional port injection combustion system.
“The 3.6-liter VVT with direct injection will be our highest specific output non-turbocharged V-6 engine, as well as one of the most fuel-efficient offerings in our high-feature family,” said Tim Cyrus, chief engineer for high feature V-6 and Northstar V-8 engines. “It’s the latest example of our strategy to continue to reduce emissions and improve fuel economy without sacrificing performance.”
This is GM’s third engine with gasoline direct injection. The announcement of the 3.6L VVT V-6 with direct injection comes on the heels of the introduction of GM Powertrain’s Ecotec 2.0-liter four-cylinder Turbo engine with direct injection on the 2007 Saturn Sky Red Line and Pontiac Solstice GXP roadsters. Also, since 2004, a naturally aspirated Ecotec 2.2-liter direct injection engine is equipped on Opel models in Europe.
How direct injection works

[font="arial, sans-serif"][size=2][b]Direct injection differs from the fuel delivery process of a conventional engine by delivering fuel directly into the engine cylinde

 

This new 3.6 direct injection V6 is already in the new Cadillac CTS's on dealers lots now.

 

[align=center][/align][align=center]Click below link to read review[/align][align=center][:-][/align][align=center]http://www.edmunds.com/apps/vdpcontainers/do/vdp/articleId=122751/pageNumber=1[/align]

 

The Cadillac commercial paraphrased says "introducing the new generation CTS."

If the changes are in the engine, interior, & suspension while the styling stays similar....

The 06-07 Montes must be "the new generation Monte Carlo" too.

As always, wishful thinking.

 

Ahhh...don't even worry about it. You have a rare Monte Carlo, GPD. I am sure that in time they will be collector's items like the Aerocoupes.