Two Different Engines at C8 Launch?
Thread Starter
Race Director
Joined: Jun 2001
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From: CA
Two Different Engines at C8 Launch?
I'm wondering if we will have two different engines at launch, the current OHV small block for the base C8, and the new DOHC flat crank engine for some uplevel variant. Based on the recent C8.R recording, it appears the C8.R has a flat crank engine. The GTLM class rules state that the engine must be a production engine, unless they get a waiver.
Thoughts?
Thoughts?
Burning Brakes
Joined: Mar 2017
Posts: 854
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From: Florida
They’ll get a waiver. We’ve only seen one model testing on public roads, that being the Stingray. Some say that some IVERS have slightly more aggressive cues, but that is likely just the Z51 package. If a higher performance model were going to be available at launch, we would see twice as many IVERs and one half of them would appear to be more aggressive than the other. The Gen V 6.2L V8 will power the initial mid-engine Corvettes and a Z06 model will be coming a year or two after with a low-displacement twin-turbocharged DOHC V8.
Melting Slicks
Joined: Aug 2004
Posts: 2,149
Likes: 1,349
From: Big D Dallas TEXAS
The C8 engine could be the 4.2 twin-turbo V8 Cadillac engine. I suppose connect that engine to a dual-clutch electronic transmission.
Is that car coming in at $60000 ? Since the NSX is $156000 and the R8 is $139000 I suppose that they will target a price of $90000 for the exotic roof line and rear-mid-engine.
So they still have to develop a $60000 car. Probably just a 102" wheelbase car, without exotic roof line, with front-mid-engine, and with a smaller pushrod V8 than current.
A Porsche Cayman with rear-mid-engine comes in at less than $60000.
Oh I see what to do. In the same rear-mid-engine car do a low roof line with an optional engine and electronic transmission and do a tall roof line with a base engine and standard transmissions. Well, both the Cayman and R8 have poked-up roof lines.
Is that car coming in at $60000 ? Since the NSX is $156000 and the R8 is $139000 I suppose that they will target a price of $90000 for the exotic roof line and rear-mid-engine.
So they still have to develop a $60000 car. Probably just a 102" wheelbase car, without exotic roof line, with front-mid-engine, and with a smaller pushrod V8 than current.
A Porsche Cayman with rear-mid-engine comes in at less than $60000.
Oh I see what to do. In the same rear-mid-engine car do a low roof line with an optional engine and electronic transmission and do a tall roof line with a base engine and standard transmissions. Well, both the Cayman and R8 have poked-up roof lines.
No competition wonder what this does to the GM strategy.
Bad news the R8 at 139k is a rear wheel limited production to 300 total in the USA only. Next one up which is the true base car and easier to get is 164k+. R8 goes away in 2020 for poor sales. NSX major discounting and could go away after 3 years of production, Acura is loosing major money on the car. My point their is no ME cars available other than the Lotus Evora 400 at 92 base price and next ME is the Mclaren at 192k I don’t count the least expensive the 4C you have to be 150 lbs to get into that car, lol I owned one and sold it, was way to small. My R8 is very comfortable hope the ME is the same.
Last edited by fasttoys; Aug 19, 2018 at 08:40 AM.
Melting Slicks
Joined: Aug 2004
Posts: 2,149
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From: Big D Dallas TEXAS
The Porsche Cayman is rear-mid-engine and also a longitudinal oriented engine but I would like it better with the perfect-balance six-cylinder engine. The Cayman doesn't have a chassis like the Corvette or Evora. The Cayman has sufficient wheelbase length but shorter than the Evora. The Evora rear-mid-engine is a transverse oriented engine.
For the C8, I'm suggesting two different bodies, one body with the optional engine and transmission and another body with the standard engine and transmissions. The optional engine might be the 4.2 twin-turbo V8 Cadillac engine. The standard engine could be a 5.3 pushrod V8 because the high volume cars have to make CAFE MPG numbers. I'm also suggesting a 102" wheelbase and a lighter weight car.For the C7 Z06 I suggested a 6.2 V10 pushrod engine. GM came out and said that they considered a high RPM engine for the Z06. The reason for the V10 is to increase valve area over the engine displacement and increase efficiency.
I like the 4.6 Northstar Cadillac engine for a base engine. That engine is based on a C4 ZR-1 engine.
For the C8, I'm suggesting two different bodies, one body with the optional engine and transmission and another body with the standard engine and transmissions. The optional engine might be the 4.2 twin-turbo V8 Cadillac engine. The standard engine could be a 5.3 pushrod V8 because the high volume cars have to make CAFE MPG numbers. I'm also suggesting a 102" wheelbase and a lighter weight car.For the C7 Z06 I suggested a 6.2 V10 pushrod engine. GM came out and said that they considered a high RPM engine for the Z06. The reason for the V10 is to increase valve area over the engine displacement and increase efficiency.
I like the 4.6 Northstar Cadillac engine for a base engine. That engine is based on a C4 ZR-1 engine.
I thought the N-Star-motors had problems? That is what a mechanic told me at the Cad-dealer who moved over to the sister store BMW as i dont know much about that motor.
Lol how did I forget the P cars that are mid-engine, I dont look at them like I do as a Lambo, R8 & Ferrari on so on. I was at the dealer on Friday looking at my friends GT2 RS 700hp (PIC). The Cayman S, GTS and the GT4 I hope 2019 they make another n/a GT4. I sold my 15 C/S last year (PIC). Porsche told me on Friday that manuel’s are only available in the GTS, GT3,GT4 versions of their cars. My Evora S was a great car I did call mine the Frankenstein car build quality was just okay it’s used many other manufactures parts. Corvette had better interior and build quality. Porsche is on another level
Last edited by fasttoys; Aug 19, 2018 at 03:37 PM.
Instructor
Joined: Dec 2013
Posts: 176
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I think we have a good chance of two motors at launch. GM is building the Caddy twin turbo OHC motor at BG. I don't buy it when Cadillac brass says it's for their brand only when it's being built at the Corvette plant. Maybe it will have a few mods but I think it will be ours and soon. My guess, my bet.
Last edited by Red08Roadster; Aug 22, 2018 at 12:49 AM.
Melting Slicks
Joined: Feb 2005
Posts: 2,179
Likes: 97
From: Palm Coast, FL
I think we have a good chance of two motors at launch. GM is building the Caddy twin turbo OHC motor at BG. I don't buy it when Cadillac brass says it's for their brand only when it's being built at the Corvette plant. Maybe it will have a few mods but I think it will be ours and soon. My guess, my bet.
Last edited by purple heart; Aug 22, 2018 at 05:28 AM.
Race Director
Joined: Jan 2001
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From: Castle Rock CO
St. Jude Donor '15
The Caddy version is not really an option. Only in GM's screwed financial bean counter thinking would that happen, as the Caddy is a HOT-V motor and not necessary for the ME layout.
Last edited by WhiteDiamond; Aug 23, 2018 at 11:06 AM.
Drifting
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From: San Francisco Ca
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Racer
Joined: Feb 2017
Posts: 435
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An interesting link, if you are curious:
https://www.carthrottle.com/post/wha...-does-it-have/
Drifting
Joined: Mar 2018
Posts: 1,498
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From: San Francisco Ca
I'm not WhiteDiamond but... With a hot-v layout the turbos are inside the V of the engine. This helps with packaging in tight areas which is required if you have front-engine like the Cadillac would have. For a mid-engine layout you can put the turbos outside of the V and the hot-V design is not required. At least that is how I understand it.
An interesting link, if you are curious:
https://www.carthrottle.com/post/wha...-does-it-have/
An interesting link, if you are curious:
https://www.carthrottle.com/post/wha...-does-it-have/
Because it works great in long engine bay of a AMG GT. But there, it’s abt sharing the compact turbo unit among different Merc models
Last edited by Parcival; Aug 23, 2018 at 12:18 PM.
Racer
Joined: Nov 2004
Posts: 489
Likes: 174
I'm wondering if we will have two different engines at launch, the current OHV small block for the base C8, and the new DOHC flat crank engine for some uplevel variant. Based on the recent C8.R recording, it appears the C8.R has a flat crank engine. The GTLM class rules state that the engine must be a production engine, unless they get a waiver.
Thoughts?
Thoughts?
Last edited by C5Driver; Aug 23, 2018 at 03:20 PM.
Pro
Joined: May 2013
Posts: 653
Likes: 36
I thought the N-Star-motors had problems? That is what a mechanic told me at the Cad-dealer who moved over to the sister store BMW as i dont know much about that motor.
Lol how did I forget the P cars that are mid-engine, I dont look at them like I do as a Lambo, R8 & Ferrari on so on. I was at the dealer on Friday looking at my friends GT2 RS 700hp (PIC). The Cayman S, GTS and the GT4 I hope 2019 they make another n/a GT4. I sold my 15 C/S last year (PIC). Porsche told me on Friday that manuel’s are only available in the GTS, GT3,GT4 versions of their cars. My Evora S was a great car I did call mine the Frankenstein car build quality was just okay it’s used many other manufactures parts. Corvette had better interior and build quality. Porsche is on another level
love the Evora...the exterior is very hot.... if they would stretch that thing and make it... id buy one... never drove or rode in one.. but my yardo looked as big as a caddy inside.. compared to the lotus..
Race Director
Joined: Jan 2001
Posts: 11,183
Likes: 85
From: Castle Rock CO
St. Jude Donor '15
I'm not WhiteDiamond but... With a hot-v layout the turbos are inside the V of the engine. This helps with packaging in tight areas which is required if you have front-engine like the Cadillac would have. For a mid-engine layout you can put the turbos outside of the V and the hot-V design is not required. At least that is how I understand it.
An interesting link, if you are curious:
https://www.carthrottle.com/post/wha...-does-it-have/
An interesting link, if you are curious:
https://www.carthrottle.com/post/wha...-does-it-have/
Pro
Joined: May 2013
Posts: 653
Likes: 36
I'm not WhiteDiamond but... With a hot-v layout the turbos are inside the V of the engine. This helps with packaging in tight areas which is required if you have front-engine like the Cadillac would have. For a mid-engine layout you can put the turbos outside of the V and the hot-V design is not required. At least that is how I understand it.
An interesting link, if you are curious:
https://www.carthrottle.com/post/wha...-does-it-have/
An interesting link, if you are curious:
https://www.carthrottle.com/post/wha...-does-it-have/
Thanks for posting this article...this quickly explains all I need to know about the hot V... !!! Now release the kraken!!!! gimme a C8!