jimmyb

^^^^
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.

jimmyb

Sorry, I think that ship has sailed....

That's no small block Chevy...

MMD

5.5L.Ford GT350 was 5.2L. You realize that with a 5.5L engine GM will be introducing the largest FPC production engine ever into the marketplace? FPC engines have been typically less than 5L. GM is pushing the envelope in this engine and it could bite them long term.

jimmyb

^^^^
I guess we'll know how it all worked out in a few years

Ghost 23

range anxiety

TxLefty

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.

SK360

Why do you say that? Electric motors are vastly more simple and reliable than internal combustion engines.

NY09C6

it could if the delicate DCT can’t handle more torque

but I agree these are not verified numbers and could be false

NY09C6

you are combining the complexity of a gas engine With the electric motor and all the electronics to make it play nice together. i agree an EV should be more reliable than a gas car, but not when you combine the two together in one car.

Steve Garrett

^^^ This.....these are NOT from GM.

Trackaholic

The GT350 engine uses a different crankshaft arrangement than most FPC V8 engines due to intake manifold packaging requirement. In order to maximize power with the intake manifold used on the Mustang, Ford uses an Up-Down-Up-Down (UDUD) crankshaft design, while most FPC V8 (and I4) engines use an Up-Down-Down-Up (UDDU) design. While both versions of the FPC are less balanced than a cross-plane design, the Ford is even more imbalanced than the typical UDDU versions. Therefore, the GT350 engine has a heavier crankshaft and more vibrations than a typical FPC, but the crankshaft is still lighter than what is used on a cross-plane 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

SingleTrackMinded

Late to the thread, but would add that I highly doubt that GM would be leaking production engine specs 5 years into the future. Interesting and fun speculation at best.

SK360

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.

jimmyb

The C8.R is running a 5.5L DOHC FPC NOW. Obviously, GM has told ALMS what engine is to homoligated.

jimmyb

We've known for some time that the Tremec DCT is good for 590 ft/lbs of torque...the numbers (20% more torque capacity than the LT1 is making) that made the rounds earlier this week which made everyone decide the TR-9080 is a potato chip were WRONG.

Here you go:
https://www.corvetteforum.com/forums...ft-limits.html

NineVettes

Yup, true as far as you went. Of course the 526 h/p VOODOO in my '17 Shelby GT350 was gutless under 3500 RPM, even a Mustang GT could pull away from me at a TL on the street, Good track engine except going to the gas station with mine was more to fill up the oil and check the gas. Yeah, a 5.2 liter FPC was great as long as you didn't mine the higher than normal failure rate or its incredible appetite for oil. Read how many gallons of oil C&D poured into their long term test GT350.

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...

PCMIII

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?

NY09C6

much less desirable. I wouldnt want it if it was cheaper than the base model. A NA z06 would be highly desirable to me, more so than a boosted z06 as well.

gas engines are here to stay well past 2040. GM knows this as does BMW and Porsche.

JockItch

I agree, I want no part of an LT2 hybrid power train for the Z06.

PCMIII

Electric plus small block is much faster in every way. Corvettes are always faster - that is their selling point as the C8 demonstrates.