Racer X

You would rev higher because you would be making the same power after the shift than at the shift with power climbing. So your power under the curve is better. Based on gear spacing the shift point could be different for every gear. GM uses the redline to maximize longevity and published HP at the same time. A simulated engine doesn't care about longevity.

JMB

5.5L w/same bore/stroke as LT6, undersized turbo's (used the 4.0L McLaren size) and an LT5 cam.

range96

The LT7 will be closer to 825hp than to 900. Not because it couldn't, but because it won't. I predict 825-850, torque maybe 700.

PRE-Z06

Tadge going out with a bang on most likely the last ICE only Corvette ever revealed…
https://www.caranddriver.com/news/a6...ineer-retires/

range96

Yup, the beancounters nixed his 900hp LT7 and he said: I'm out!

PRE-Z06

Are you sure it’s going to be the same displacement and what is the duration on the LT6 cam for comparison? The Mac turbo is 60mm?

JMB

yes on displacement, unfortunately I can't find a detailed set of specs for the LT6 cam. Not sure on the Mac turbo size, my program used the same PN as it. The reason I selected it was I wanted to validate a build of a 4.0L to see what it would do and it was pretty close!

jvp

Remember how I knew for certain the C7ZR1 was going to be a single model year, and predicted that before the car was delivered? Then was proven right by the release of the C8? Well, the story of that started in 2016 when I was at Leguna Seca with Tadge and the race guys. I asked him what was next for someone in "Chief Engineer" position and he said "retirement." His plan, at the time, was to check out in 2020. He didn't say anything about a pending release of a new car, but he was pretty confident on the retirement year. I knew that whatever the C8 was going to be (back then, no one knew for sure), it'd be a 2020MY or earlier. Sure enough they introduced a "long MY" 2019 and included the ZR1 in it. That told me that 2020 was the C8's release for sure.

Now, post-2020, and Tadge is still with GM, so obviously things changed from his original plans. As they sometimes do. But that's how I knew. ;-)

Z0HS1CK

Article states the ultimate corvette, which implies no zora and the ZR1 is once again the king of corvettes.

jvp

But they're just speculating as they don't know for sure. Here's another speculation: the Zora is just an option to tick off on the ZR1, not a separate RPO entirely. So it'll still be a ZR1, because as we know, the Z in ZR1 stands for "Zora".

range96

Jason,

You were responsible of convincing me that the ZR1 will be a single year model. Otherwise, I would be still waiting for a MY 20. Thank you, thank you! I love this car!

I remember the story of Jim Mero being asked if he wanted to work on the C8 or stay with the C7 (ZR1) development. We can thank him for fine tuning the ZR1 chassis. When he was done with that he retired.

I didn't realize Tadge was there since C5 days. I'm sure we'll have some stories from his tenure after his retirement. The big question is, who will replace him?

Z0HS1CK

I speculated that over a year ago.

That if the ZR1 was the final (highest) variant, there could be a ZR1 "ZORA" edition.

range96

Very possible, but not in the first year for sure. I'll wait for the MY 26 ZR1!

jvp

When I speak authoritatively, folks should listen. It comes from a position of knowledge. ;-) To be clear, I can speculate like the best (and worst) of them and make it very clear when I am. But other times, not so much. Glad your ZR1 is still making you happy.

Yep. Tadge was one of Hill's Assistant Chiefs for most of the C5's development and into the C6's. Lots of "fun" conversations between he and Hill about simple things like steering wheel controls for stereos, etc, for the C6. Hill was adamantly opposed to the idea but was later convinced. We have Tadge to thank for those sorts of things.

As for replacing him, I can only speculate it'll be Josh. But I dunno for sure. He's been tight-lipped about the whole thing.

PRE-Z06

I disconnect my phone in C6 when on track as I’ve accidentally answered the phone while driving and turn down volume on radio as I’ve accidentally changed stations from grid to blaring music lol

ZRacerLE

Interesting idea. First I've heard of it on the forum... would make sense!

JockItch

Not if you subscribe to the original and longstanding rumor that the ZR1 will be TT but ICE only and the "Zora" would be a hybridized, hypercar version of the ZR1.

PuffC8

It’s been mentioned a lot. Different speculations but ultimately the same. That the Zora will be a super limited edition (numbered, 1-xxx?) version of the ZR1. A hyper-car of sorts, most likely the last handful of ZR1s produced.

PRE-Z06

I find it hard to imagine the Zora as hybrid twin turbo Corvette as it’s going to be such a porker, what if the Zora is a package on the ZR1 like the ZTK was on the C7 and it’s a hardcore lightweight track option instead (CF wheel, Cup 2Rs, big **** etc) as Zora was a racer?

NEVERL8

The corvette team fashioned the Z06 engine off of the Ferrari 458. The successor to the 4.4 liter 458 was the 3.9 liter 488 with twin turbos. It would not surprise me at all if team Corvette took queues from the 488 to build the ZR1 engine. This would mean a reduced displacement, with twin turbos and a reduced redline, retaining the flat plane crank, making 20% to 25% more power. This would put it at 800+ HP and torque in the 500 ft-lb range. We’ll soon see I suspect.