All future engine development halted due to COVID
Race Director
Joined: Jan 2005
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From: NC
^^^^
Indeed they have. I'm pretty certain they have enough "good will" stored up that no one is going to complain about the C8.R engine, which looks now like it won't be in a production car until 2021.
Indeed they have. I'm pretty certain they have enough "good will" stored up that no one is going to complain about the C8.R engine, which looks now like it won't be in a production car until 2021.
Race Director
Joined: Jan 2005
Posts: 13,934
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From: NC
Don't get you hopes up too high for a V8 FPC engine. Ford had nothing but problems with theirs and are abandoning them. There is an inherent problem with vibration in them and a large counterweight is required to counter-balance the large weight of the crankshaft. This requires very tight and very expensive machining tolerancing will be needed to minimize excess vibrations. Ford had to delay the introduction of this car when it came out back in 2015 because of the engine development problems they had getting this engine to work. As the RPM increases so do the intensity of the vibrations. GT350 engines had lots of problems with oil seals and internals breaking down over the lifespan of the GT350. Over time I expect GM to experience the same difficulties. It's just an inherent weakness with the V8 FPC design.
That's no small block Chevy...
Safety Car
Joined: Mar 2018
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Sorry, I think that ship has sailed....
https://www.youtube.com/watch?v=XjolhgW06SE
That's no small block Chevy...
https://www.youtube.com/watch?v=XjolhgW06SE
That's no small block Chevy...
Race Director
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From: North Texas
It wouldn't surprise me to see a 550 hp 5.5 liter DOHC in the Grand Sport. Might be a FPC if the rules body demands it. Or perhaps they find the FPC in a 4.4 TT for the Z06/ZR1. Not sure what they would have to do on the production side to get the FPC homologated for the 5.5 displacement.
Last edited by TxLefty; Apr 23, 2020 at 08:42 PM.
Melting Slicks
Joined: Apr 2007
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From: Pittsburgh PA
Le Mans Master
Joined: Sep 1999
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From: Texas
Exactly. The numbers are just guesses. The GS in particular makes ZERO sense. 600HP and 500ft/lbs torque? There's no way it makes sense to tune the LT2 to that HP number which means the electric motor is providing an additional 105 HP...but only providing 30 additional lbs/ft. torque?
but I agree these are not verified numbers and could be false
Last edited by NY09C6; Apr 23, 2020 at 09:25 PM.
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Le Mans Master
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From: Texas
Last edited by NY09C6; Apr 23, 2020 at 09:22 PM.
CORVETTE TODAY Show Host
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St. Jude Donor'15
It's from Hagerty
Note the commentary: In other words the Hp/Tq numbers are made up.
The chart below mixes our speculation with accurate details from the hold order and other leaked documents. In particular, the power and torque figures presented below are estimates consistent with our previous reporting.
https://www.hagerty.com/media/news/g...sXySv3Y1x4xp7g
Note the commentary: In other words the Hp/Tq numbers are made up.
The chart below mixes our speculation with accurate details from the hold order and other leaked documents. In particular, the power and torque figures presented below are estimates consistent with our previous reporting.
https://www.hagerty.com/media/news/g...sXySv3Y1x4xp7g
^^^ This.....these are NOT from GM.
Pro
Joined: Mar 2013
Posts: 742
Likes: 154
Don't get you hopes up too high for a V8 FPC engine. Ford had nothing but problems with theirs and are abandoning them. There is an inherent problem with vibration in them and a large counterweight is required to counter-balance the large weight of the crankshaft. This requires very tight and very expensive machining tolerancing will be needed to minimize excess vibrations. Ford had to delay the introduction of this car when it came out back in 2015 because of the engine development problems they had getting this engine to work. As the RPM increases so do the intensity of the vibrations. GT350 engines had lots of problems with oil seals and internals breaking down over the lifespan of the GT350. Over time I expect GM to experience the same difficulties. It's just an inherent weakness with the V8 FPC design.
If GM uses the UDDU shaft layout, they should be able to get better results than Ford was able to achieve from vibration and throttle response perspective.
The GT350 engine is very fun to drive, and sounds amazing, so if GM can capture those subjective aspects, the Z06 will be amazing
it is true that the Voodoo engine seems less reliable than ideal, so hopefully GM can improve upon that as well.
Regarding torque, the 600 lb-ft number is way off. It will be closer to 455 lb-ft. If it can make 85% of that (386) at peak power the car will hit 600 HP at 8150 RPM.
-T
Melting Slicks
Joined: Apr 2007
Posts: 2,168
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From: Pittsburgh PA
Thankfully GM already has a good amount of experience mixing the 2 with the 2 generations of the Volt and the ELR. They have been rock solid. I have a Gen 1 Volt with 100k trouble free miles.
Race Director
Joined: Jan 2005
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From: NC
It wouldn't surprise me to see a 550 hp 5.5 liter DOHC in the Grand Sport. Might be a FPC if the rules body demands it. Or perhaps they find the FPC in a 4.4 TT for the Z06/ZR1. Not sure what they would have to do on the production side to get the FPC homologated for the 5.5 displacement.
Race Director
Joined: Jan 2005
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From: NC
Here you go:
https://www.corvetteforum.com/forums...ft-limits.html
Last edited by jimmyb; Apr 23, 2020 at 11:36 PM.
Burning Brakes
Joined: Jun 2018
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From: Gainesville, FL
A 5.5 liter FPC - umm, no thanks for me. There is a reason besides taxation on engine displacement why they don't build FPCs that size. A CPC would be a lot better, but I don't honestly know if I could give up the incredible low to mid-range torque and H/P I have in my '19 M7 Z. Now a 5.5 liter, CPC twin turbo - those are horses of a different color...
Melting Slicks
Joined: Nov 2013
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From: Annandale VA
Nobody can explain why GM would invest $1,000,000,000 to develop a FPC ICE motor at this time just for a small volume of Corvettes. It makes no sense at all to spend that kind of money for a brand new engine that makes 600 hp at 9,000 rpm. Just use the existing small block and add electric motors to the front wheels with a battery that can run 50 miles on pure electric.
Faster, fuel efficient, vastly cheaper and more reliable. What is not to like?
Faster, fuel efficient, vastly cheaper and more reliable. What is not to like?
Le Mans Master
Joined: Sep 1999
Posts: 9,813
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From: Texas
Nobody can explain why GM would invest $1,000,000,000 to develop a FPC ICE motor at this time just for a small volume of Corvettes. It makes no sense at all to spend that kind of money for a brand new engine that makes 600 hp at 9,000 rpm. Just use the existing small block and add electric motors to the front wheels with a battery that can run 50 miles on pure electric.
Faster, fuel efficient, vastly cheaper and more reliable. What is not to like?
Faster, fuel efficient, vastly cheaper and more reliable. What is not to like?
gas engines are here to stay well past 2040. GM knows this as does BMW and Porsche.
Last edited by NY09C6; Apr 24, 2020 at 09:30 PM.
Safety Car
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From: Western Chicago Suburbs
Melting Slicks
Joined: Nov 2013
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From: Annandale VA