C8 Engine Revealed
Drifting
Joined: Oct 2011
Posts: 1,872
Likes: 333
From: Olmsted Falls Ohio
St. Jude Donor '12 thru '24
I'd be up for a first-year car. Hopefully they can make the car and it's engines in enough volume to take advantage of economies of scale. My friend has a fully optioned all-stock '13 Shelby GT500 (5.8 DOHC supercharged), and it stickered for far less than my '13 427 vert - not exactly an apples-to-apples comparison but makes you wonder what the possibilities are considering there were 4,885 GT500s built in '13, which was the first year for the 5.8 DOHC IIRC. The base price difference between the Boss 302 based car and the GT500 was about $13,400 in 2013.
Last edited by pickleseimer; Dec 28, 2017 at 09:52 PM. Reason: clarification
Melting Slicks
Joined: Aug 2014
Posts: 2,746
Likes: 916
Drifting
Joined: Aug 2015
Posts: 1,434
Likes: 183
From: Maple Ontario
GM's biggest concern is corporate average mpg, IMO! To get a more energy efficient engine, it needs to be a double overhead cam that can vary intake and exhaust timing independently. Probably have 4 valves per cylinder.
Then they can meet the EPA mpg fixed driving path and when max power is used (not part of the required EPA mpg test) those two turbo's provide the power. Turbo's also capture some of that wasted energy going out the exhaust.
Maybe it will be a truck engine as well! They have to improve gas mileage too!
Then they can meet the EPA mpg fixed driving path and when max power is used (not part of the required EPA mpg test) those two turbo's provide the power. Turbo's also capture some of that wasted energy going out the exhaust.
Maybe it will be a truck engine as well! They have to improve gas mileage too!
Burning Brakes
Joined: Dec 2017
Posts: 1,068
Likes: 858
Also, with electric valves, a driver could select the typical low revving / high torque engine operational profile (using 2 of 4 vales per cylinder, etc...) OR select a high revving profile (using all 4 valves) with a higher red-line, etc...
Drifting
Joined: Aug 2015
Posts: 1,434
Likes: 183
From: Maple Ontario
And release in a very limited run, new tech like this is perfect!
Pro
Joined: Feb 2012
Posts: 545
Likes: 85
GM's biggest concern is corporate average mpg, IMO! To get a more energy efficient engine, it needs to be a double overhead cam that can vary intake and exhaust timing independently. Probably have 4 valves per cylinder.
Then they can meet the EPA mpg fixed driving path and when max power is used (not part of the required EPA mpg test) those two turbo's provide the power. Turbo's also capture some of that wasted energy going out the exhaust.
Maybe it will be a truck engine as well! They have to improve gas mileage too!
Then they can meet the EPA mpg fixed driving path and when max power is used (not part of the required EPA mpg test) those two turbo's provide the power. Turbo's also capture some of that wasted energy going out the exhaust.
Maybe it will be a truck engine as well! They have to improve gas mileage too!
Le Mans Master
Joined: Dec 2014
Posts: 6,140
Likes: 2,745
From: Northeast
The FordGT gets more HP... and GM being smarter? That’s debatable.
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Safety Car
Joined: Dec 2003
Posts: 3,641
Likes: 2,689
From: Pacific Northwest
The Forgt GT is going to sell in tiny numbers compared to the ME. Look at that pathetic fuel economy of the Ford, e.g., 14 MPG combined. Ford can put up with that due to its tiny sales rate.
True, while some Corvette owners care less about MPG, especially on the distorted world of those who post on forums compared to the total purchasing group, in the real world with many driving their Corvettes long distances, others use them as DD commuters, and similar GM will need to do in this area (CAFE), and will do much better in this area.
More importantly to many, the Ford GT’s exhaust sound is not acceptable to many Corvette owners, whereas the ME’s exhaust will sound so much better.
Lastly, I am not impressed using the Ford GT as a benchmark for our ME’s, especially the they Ford’s having a V-6. As lately confirmed, ME’s twin-turbo, 32V, V-8 is what we are getting.
I give the Ford GT’s Power Plant a “B.” GM’s ME motor will rock in comparison.
True, while some Corvette owners care less about MPG, especially on the distorted world of those who post on forums compared to the total purchasing group, in the real world with many driving their Corvettes long distances, others use them as DD commuters, and similar GM will need to do in this area (CAFE), and will do much better in this area.
More importantly to many, the Ford GT’s exhaust sound is not acceptable to many Corvette owners, whereas the ME’s exhaust will sound so much better.
Lastly, I am not impressed using the Ford GT as a benchmark for our ME’s, especially the they Ford’s having a V-6. As lately confirmed, ME’s twin-turbo, 32V, V-8 is what we are getting.
I give the Ford GT’s Power Plant a “B.” GM’s ME motor will rock in comparison.
Last edited by elegant; Dec 30, 2017 at 11:34 AM.
Le Mans Master
Joined: Dec 2005
Posts: 8,475
Likes: 332
From: Port Arthur, Texas 77642
The ME will be produced in very limited numbers alongside the front engine C7 until it retires and front engine C8 takes its place.
ME will have exclusivity of 5.5 DOHC FI powerplant.
Front engine C8 will have the smaller DOHC NA powerplant as standard equipment providing increase in power and fuel efficiency (CAFE). Forced Induction will power upper tier model(s). 5.5 DOHC NA motor possibly slotted for ZO6 and Z28.
ME will have exclusivity of 5.5 DOHC FI powerplant.
Front engine C8 will have the smaller DOHC NA powerplant as standard equipment providing increase in power and fuel efficiency (CAFE). Forced Induction will power upper tier model(s). 5.5 DOHC NA motor possibly slotted for ZO6 and Z28.
Safety Car
Joined: Dec 2003
Posts: 3,641
Likes: 2,689
From: Pacific Northwest
And the ME will also have the 4.2L option with is 32V, DOHC motor. That motor is projected to go into the ME as follows (units/year):
8,000 for 2019 through 2022; 7,000 for both 2023 & 2024.
8,000 for 2019 through 2022; 7,000 for both 2023 & 2024.
Thread Starter
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 34,937
Likes: 12,350
From: NE South Carolina
Yep I misquoted the GT. With only 3.5 Liters it gets 647 hp! Actually at least the GM marketing team is smarter! No way they would let engineering say 647 hp. They would surly tell them to go back and find 3 more hp!
Last edited by JerryU; Dec 30, 2017 at 06:42 PM.
Race Director
Joined: Mar 2001
Posts: 19,948
Likes: 6,750
From: Bonneville Salt Flats
"...where dealing with "issues" is easier." Still going to be the neighborhood GM service department. Nothing in my experience with same would suggest a one-off would be handled any better than one-in-a-million, in terms of vehicle production numbers.
Safety Car
Joined: Dec 2003
Posts: 3,641
Likes: 2,689
From: Pacific Northwest
Exactly, while there might be a slow roll out of the ME as is typical of a new generation Corvette, the ME is not GM envisioned as a limited production vehicle (the opposite of how the ZR1 was/is envisioned). That does not mean that the top-of-the-line ZORA won’t be limited, just that the “entry model” will be made in whatever numbers customers are buying.
Team Owner
Joined: Mar 2006
Posts: 27,567
Likes: 99
From: San Diego
Racer
Joined: Jul 2012
Posts: 287
Likes: 93
From: Michigan
Only 7 or 8 thousand a year? How many corvettes are they planning on selling? What is going in the rest of them?
Safety Car
Joined: Dec 2003
Posts: 3,641
Likes: 2,689
From: Pacific Northwest
https://www.corvetteforum.com/forums...gh-2021-a.html