Z0Sick6

Hi all,

When i heard i could be apart of this tonight i jumped in my car to meet up.

so my buddy Tony picked up his z06 stage 1 aero M7 about a week and a half ago. Car has 882 miles on it.

Our other buddy Vince has a 2015 GTR Premium with 3200 miles on it.

I was in the z06 and the other car had a passenger as well. I tried to get some video but it was too dark to capture anything and the wind noise was ridiculous.

Onto the results....

We did multiple pulls. Some starting from 50 and some from 60.

The first pull from 50: z06 and gtr are even for about 2 seconds and then the z06 pulls ahead. By 150 the z06 has 1.5 car lengths or so.

2nd pull 60 to 150: again z06 gets the jump almost instantly and is again 1.5 car lengths or so ahead.

3rd pull was 60 again... Pretty similar result.

Now the 4th pull we went back to 50...the z06 got slower... By 140 the gtr was riding the bumper of the z06.

Pull 5... 50 again: z06 and gtr are even at 155.

Pull 6: 50mph again: by 140 gtr is ahead and z06 was at its rear tires.

7th and final pull: went from 60 mph where z06 was winning easier in the beginning.. And by 140 the gtr was ahead by 1/2 car length or so. Not a full car but probably a bit more then 1/2 a car.

We got off at the exit and we were all surprised that in december in NJ the z06 was exhibiting signs of heat soak but from reading the forum its more about pulling timing instead to I guess preserve the engine. We were all surprised that how different the beginning pulls were vs the last 2 or 3.

Buddy in the gtr made a comment whats going to happen on a road course in june when youre driving the car hard for 10 plus minutes... Or do these same runs in mid july...

Denstoy968

Would loved to have seen videos of this.

DRLC5

Thanks for the info, It sounds like GM should have done more homework on these cars before releasing them to the public? You are correct what will happen in the summer months on a road course? I hope they come with a solution before I buy one in Feb or March?.

Jp23rockstar

That's why supercharging a car isn't always the best route. If the goal is go on the track, the supercharger will suck. It's nothing like the good old C6 Z06 NA V8 engine compared to this trash lt4 engine. The lt4 isn't even hand built unlike the legendary ls7. It should come from the factory with full power, not limited because the design of the engine sucks.

blipit_

Nice kill.

3 Z06ZR1

The GTR shines on the 0-60 not 50-140. Glad to hear the Z06 did better but the timing pulling is concerning esp since it cool out.

vtknight

Well - I have some experience here.

GTRs love 40 MPH starts for rolls.

Corvettes like 60+.

This MPH a start negotiation has been around since GTRs and Corvettes began roll racing each other.

I must say I am somewhat surprised as roll racing is NOT a stock GTR's thing. The newer DBA GTRs - especially the 2013+ cars are almost equal to the earlier CBA GTRs being tuned with exhaust - so they gain some actual middle to upper end (which the stock versions lacked).

Back to another ZR1 vs video - this time versus a tune and exhaust GTR - but on E85 which allows a much more aggressive tune...

http://m.youtube.com/watch?v=GZL5StRbTYQ

Dave concrete

exactly why I decided to wait till mid to late 2016 maybe 17' to see what they do before I buy one.

CaryBob

Could you elaborate on exactly what were the "signs of heat soak" that you observed? Did anything register on any gauges?

Blvdbrawler

Love it! Thanks for the update!

RedLS6

The GT-R is 300 pounds heavier than the Z06, and has ~100 less horsepower. Also, DCT auto versus manual.

MaynardZed

Apparently it's not 100 less horsepower after the Z06 heat soaks.

RedLS6

Nope.

Silverspeed

I remember when the C6Z came out. Any car that weighed 300 pounds more, and had ~100 less horsepower would have been curb stomped, transmission be damned.

Amazing how different the initial performance perceptions are with these two cars.

heavychevy

This is really sad that GM is putting this car out there like this. Utterly ridiculous it cannot stand a few highway pulls at WOT without dramatic slowing down. This will outweigh the warranty and be a black eye on the C7 generation if they don't fix it.

Hard to imagine this car not being super frustrating on track.

JackTripper

Tune=No more ECM issues. Basic math. How the Z should have came from the factory but did not. It is what it is.

I want to see a race with a Z with JUST a tune. That is the only fair comparison, otherwise, the Z will always have a hand tied behind its back.

Viper_Vette

This thread confirms it. No way in hell this car is going to do 4 laps around a track in normal temps. It's freezing in the east coast.

JackTripper

Agree. Without a tune that is.

jleews6

Thats about what I figured would happen. I love the new Z and I also think its the best new performance car on the market (im biased) but I cant understand why GM put this blower on this car. Anybody can say what they want but I do not think that was the best option for them. I had an 03 Cobra when they first came out and it did the same thing. After a couple of pulls the blower would get hot and it would loose power. I cant wait to see someone put alcohol on a new Z.

Paulchristian

I really don't think team corvette is going to address this heat soak issue at all. I am convinced they feel that 90% of all vette owners are men over 50 years old who don't care all about tracks or drag strips. They know these cars will be, for the large majority, boulevard cruisers.

There is no way GM did NOT know about this heat soak situation before releasing this car. I don't think this is getting fixed folks....that's just me.