New Engine For 2008 C6?
Melting Slicks
Joined: Mar 2006
Posts: 2,255
Likes: 3
From: Sugar Hill Georgia
Originally Posted by Larry B.
I have a friend who owns a Magnum Hemi. It has the DOD system and he says you can't tell it by driving the car. He's a car guy so he would know if it was noticable. Of course it still doesn't get as good of mileage as my stock C6 with the A4 and optional 3.15 rear.
Le Mans Master
Joined: Apr 1999
Posts: 7,837
Likes: 107
From: Huntington Beach California
Originally Posted by DSOM Z51
Definitely a fact. I have a neighbor whose friend has a cousin, whose boss has a neighbor, whose daughter is dating a guy whose barber has a sister and she knows somebody who used to work for GM............ And they say that its definitely true.
I Think!
Pro
Joined: Sep 2004
Posts: 501
Likes: 0
the LS2 was a work of art in "simplicity of effective design"
So the question becomes why would these new engines be superior other than a mild horse power increase or DOD.
What does the new engine weigh? What about new Weight / HP ratios?
What about delay in DOD. I imagine the timing will be more agressive on a vette. But a 1/10 second delay is still a 1/10 second delay on the track! Even something as small as a 1/50 second delay is critical to some gear heads.
What about complexity and service issues with a new larger engine?
What about weight balance?
So the question becomes why would these new engines be superior other than a mild horse power increase or DOD.
What does the new engine weigh? What about new Weight / HP ratios?
What about delay in DOD. I imagine the timing will be more agressive on a vette. But a 1/10 second delay is still a 1/10 second delay on the track! Even something as small as a 1/50 second delay is critical to some gear heads.
What about complexity and service issues with a new larger engine?
What about weight balance?
Pro
Joined: Sep 2004
Posts: 501
Likes: 0
Originally Posted by peccles
I hope there's more than just a 0.2L displacement increase. With GM's pushrod V6s getting VVT and the direct injection in the turbo 2.0L Ecotec for '07 and 3.6L V6 for '08, I would hope the next Corvette engine to get some or all of this technology for more power and efficiency.
Complex valve arrangements also take up valuable engine space.
Just because you can, doesn't mean you should.
Burning Brakes
Joined: May 2004
Posts: 996
Likes: 13
From: Dallas TX
Originally Posted by DigitalGriffin
So the question becomes why would these new engines be superior other than a mild horse power increase or DOD.
Originally Posted by DigitalGriffin
What about delay in DOD. I imagine the timing will be more agressive on a vette. But a 1/10 second delay is still a 1/10 second delay on the track! Even something as small as a 1/50 second delay is critical to some gear heads.
Burning Brakes
Joined: May 2004
Posts: 996
Likes: 13
From: Dallas TX
Originally Posted by DigitalGriffin
All these improvements are at the cost of wieght/hp. Sure you can turbo charge a 4 banger with VVT and get it to kick out 300 HP/300ftlb. But at what cost? Look at the complexity. And what does that sucker weigh. And what does the power curve look like? Is it mostly flat and linear? And I bet it's gas milliage isn't spectacular either.
Complex valve arrangements also take up valuable engine space.
Just because you can, doesn't mean you should.
Complex valve arrangements also take up valuable engine space.
Just because you can, doesn't mean you should.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Team Owner
Joined: Jul 2003
Posts: 34,299
Likes: 1
From: [Enter Unoffensive Comment Here]
Cruise-In VI Veteran
Cruise-In VII Veteran
St. Jude Donor '06
Originally Posted by Tom_Slick
I hope not!! I would hate to have an out dated car after only 2 years!
Le Mans Master
Joined: Nov 2004
Posts: 6,566
Likes: 2
From: Goleta CA
Cruise-In VIII Veteran
Originally Posted by Black04Vert
The C6 is currently .1 MPG over the current CAFE minimums.
Burning Brakes
Joined: May 2004
Posts: 996
Likes: 13
From: Dallas TX
Originally Posted by mlongo99
That doesn't make sense to me. The way I understand it, CAFE stands for corporate average fuel economy, so there is no magic number that the car needs to meet. If GM discontinued another car with worse mileage, then they wouldn't be barely squeaking by.
Both laws have a magic number. CAFE minimums are 27.5 MPG per manufacturer. For the Gas Guzzler tax, the minimums are 22.5 MPG per model. The Vette is at 22.6 MPG combined city & highway. Great economy for a 400HP sports car, lousy economy compared to the average passenger car.
Racer
Joined: Dec 2005
Posts: 428
Likes: 0
From: Boca Raton FL
Originally Posted by psykod
GM tried this once already. Doesn't anyone remember the Cadillac V8-6-4? I don't remember much about it except that it was a dog.
Le Mans Master
Joined: Apr 2001
Posts: 7,411
Likes: 253
From: Little Elm TX
Originally Posted by Velocity Steve
Thankfully, it's not 25 years ago anymore. I bet they can make it work now.
Pro
Joined: Jul 2005
Posts: 506
Likes: 64
From: Eastern Pennsylvania
... and Tahoes and a number of others. Seems like they have it mastered this time. However, I'll be content with my traditional V8 LS2! Can't complain one bit about the mileage for a car with 400 horsepower! 
Melting Slicks
Joined: Jan 2006
Posts: 2,713
Likes: 0
Originally Posted by psykod
GM tried this once already. Doesn't anyone remember the Cadillac V8-6-4? I don't remember much about it except that it was a dog.
Safety Car
Joined: Jul 2001
Posts: 4,661
Likes: 67
From: Ocean Springs MS
Originally Posted by Black04Vert
You are correct. The CAFE penalties do apply to the entire fleet for a corporation. However, the Energy Act's Gas Guzzler tax does not. This tax is per model, per model year.
Both laws have a magic number. CAFE minimums are 27.5 MPG per manufacturer. For the Gas Guzzler tax, the minimums are 22.5 MPG per model. The Vette is at 22.6 MPG combined city & highway. Great economy for a 400HP sports car, lousy economy compared to the average passenger car.
Both laws have a magic number. CAFE minimums are 27.5 MPG per manufacturer. For the Gas Guzzler tax, the minimums are 22.5 MPG per model. The Vette is at 22.6 MPG combined city & highway. Great economy for a 400HP sports car, lousy economy compared to the average passenger car.
Melting Slicks
Joined: Jul 2004
Posts: 3,316
Likes: 1
From: San Antonio Texas - Any sufficiently advanced technology is indistinguishable from magic
Originally Posted by JFTaylor
New advance in 2010
Team Owner
Joined: Feb 2000
Posts: 45,535
Likes: 892
From: Texas
CI 1-4-5-8-9-10 Vet
St. Jude Donor '03 thru '10, '17
Originally Posted by niphilli2
I would guess L92 heads would be worth a good 30-40RWHP over stock LS6/2 heads, an aluminum 6.2L block is also in the parts bin now .
.