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Old 11-06-2008, 01:54 AM   #50 (permalink)
slowinthefastlane
3.0 Liter SIDI V6
 
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Join Date: Sep 2004
Location: San Francisco Bay Area
Drives: 2009 Pontiac G8 GT
Posts: 719
Re: 2009.5 Brings 4-Cylinder G6 Coupe

Quote:
Originally Posted by Olds88 View Post
With a few updates the 3.9L V6 could be putting out more horsepower than the 3.6L as well as significantly more torque.
The HV 3.9 needs to go. It's thirsty, course, and generally inefficient.

The G6 with the 3.9L and 4-Speed is rated at 15 city / 22 highway and is good for 222 HP / 238 lb-ft. The G6 with the HF 3.6L and 6-speed is rated at 17 city / 26 highway and is good for 252 HP / 251 lb-ft.

To put this in contrast, the relatively inefficient 4.6L 3-valve modular V8 that is in the Mustang yields 300 HP / 320 lb-ft. With the 5-speed auto trans, it's rated at the exact same 15 city / 22 highway as the HV 3.9L in the G6. Heck, even the L76 6.0L V8 beast in the G8 GT is rated at 15 city / 24 highway while putting out 362 HP / 391 lb-ft.

So what does the HV 3.9L get you? V8 fuel economy without V8 power and V8 noise! Doesn't sound like a good trade-off to me.
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