CanadianVetster

What are good times at VIR for the following:

C5Z
C6Z
Zr1
C7 - Z51

looking to understand the track performance of each..
Not looking to hear "what is best" or "you cant compare"

Just interested in realistic times each of the cars run.

Thanks

z28lt1

http://fastestlaps.com/tracks/virgin...l_raceway.html

The 2014 results are not up, but the C7-Z51 did 2:53.8 for C&D this year.

Note however that VIR has been repaved and widened this year, so results pre and post 2014 aren't exactly comparable. For the C7, the wider track would have sped up the time compared to previous years, but the new pavement sometimes slows things down until the pavement gets a little use.

EDIT:

So you can see with the same driver, here are just the C&D results not including 2014:
http://www.caranddriver.com/features...o-2013-page-10

JeremyGSU

Are you talking about VIR Full or VIR Grand Full? Big difference in time.

Most track days run VIR full, which is what my guess is most people will list their lap times from.

JDIllon

For a HPDE driver, anything in the 2:03-2:04 range is a fast time. There are C5 T1 cars that have done under 2:00s. Just to give you a range! And the new track repave will take a second or two off of that. JD

rbl

I disagree .... 2:03/4 is smokin and puts you in the top 10 for any event much less an HPDE. That's a pretty high bar for most folks.

2:10 is a very respectable time on full course for an HPDE,
T-1 car or otherwise. The fast guys run 2:06 - 2:08 if theycan get a clean lap and there are of course exceptions, exceptions, exceptions but not many. The mainstream will be in the 2:15 range IMO.

brkntrxn

This is going to be fun to watch.

StreetSpeed

2:03 is a very good time for a great driver in a race prepped C5Z with full aero and 400+ rwhp. So that's everyone on this board.

Most everyone else with a Corvette will be hauling *** under 2:10, getting the lead out at 2:15, doing OK at 2:20, and need some work slower than 2:25.

JDIllon

OK!!! my bad!!! just using me as a gauge!! LOL!!! I guess I should know better than get involve in these sort of threads!! and I agree 2:10 is a very respectable HPDE time. I did say 2"03 - 2:04 was a fast time. JD

brkntrxn

That is more like it. From personal experience, I agree with this.

drivinhard

You can't compare

What he's really after is the relative time to each other. So let's say we put A6's on all of them, and have a decent driver familiar with VIR.

C5Z is reference at 0 secs
C6Z is 3-4 secs faster
C6Z Z07 5-6 secs faster
C6Z ZR1 6-7 secs faster

I think you'll find this pretty accurate if you were to to do it.

SouthernSon

I would say these are good figures.

racerns

I believe the Full Course TT1 record is 1:54.X by a modified C6 Z06. This car is still a registered srteet car but has full aero, A6s, weight reduction, and ~530 rwhp. My buddies ST2/TT2 C5 Z06 has run a 1:59.X, but this car is not street legal. My stock '09 ZR1 running on the factory option Cup ZP tires has done a best of a 2:03 during an HPDE session with a little traffic. I was supposed to run in TT1 this past weekend but had some issues and was unable to compete. I do think I could get a 2:00.x in stock form. I plan to switch to A6s next year to run some more TT1. My buddy, who drives the C5 Z06, drove a students C7 Z51 this past weekend and turned a 2:12. All of the times mentioned are with the new pavement and widening.

heavychevy

You think the C6Z07 is 2 seconds faster than the C6Z?

I was under the impression that almost all of the speed increase was from the MPSC. The Z07 is heavier no? I would think the two would be nearly identical on equal tires. Does the Z07 have ZR1 gear ratios? That would be worth some time too i suppose.

racerns

You seem to be forgetting the CC brakes, magnetic shocks, and a little bit of aero. The brakes and shocks are a definite upgrade over the stock Z06. The Z07 is more than tires.

heavychevy

I didn't forget them, but VIR is not bumpy, so barely a wash on the suspension. CC's aren't going to make a quantifiable difference on a one lap flyer, and let's be real, aero? VIR is not even an Aero track except the esses and southbend. And that certainly isn't enough aero to make a huge difference.

Look at the relative times, stick some MPSC in place of the crappy eagle runflats and you'll see some similar times. I would give the ZR1 gear ratios a legitimate advantage because it's proven to be a huge upgrade on the track.

V4kerker

CanadianVetster My cars not on your list, but I run a 2007 non-z51 with automatic 6 speed. Just ran a PB of 2:24.7 on 300 wear rating tires. Only mods are Hawk Blue brake pads, JOC stage 1 shock and sway bar.
These lap times are busting my ego

racerns

The Z07 on just PS2 runflats turned a time almost 5 sec quicker than the regular Z06 on the VIR Grand course. While the PS2s ZPs are better the the GY runflats, that 5 sec did not all come from tire. At Laguna Seca (a much shorter course) the Z07 (w/Cups) was over 5 sec quicker than the regular Z06 while the ZR1 improved just a little over 3 sec when it was tested with Cups instead of PS2s. I still think you are selling short the effect of the mag shocks (even on a smooth track) and the CC brakes. While it may not be a full 2 sec difference on the VIR Full course on equal tires, I still believe that it will be more than 1 sec.

heavychevy

Coincidentally Jan Magnussen ran 4 seconds faster at road atlanta switching from f1's to ps2. Same track same day. And Road Atlanta is significantly shorter than VIR grand and less reliant on mechanical grip. Not to mention from the early days of lightning lap they switched from mag editors to real hot shoes driving the cars. I recall the GTR picked up 4 seconds or so switching from one set of its stock tires to the other.

Considering all of those factors i think 5 seconds is very doable. 4 at least. This is all conjecture though as i do not know for sure how.much the additional mods help which is why i asked.

But Im not speaking blindly, ive done my homework. I need hard data from guys who have driven both.

drivinhard

A bit more aero (front splitter, rocker skirts, and a full width rear lip spoiler), ZR1 spring and sway bar combo (they put a huge rear bar on the ZR1 for all the nose weight of the blower, and without 170 lb on the nose, the Z07 ROTATES), mag shocks (they are excellent) carbon brakes.

I have been in a regular C6Z almost back to back to a Z07, and they do not feel anything remotely the same.

drivinhard

I would wager a lot of $$ the Z07 is MUCH closer to the speed of the ZR1 in lap time at VIR full, than the base C6Z is to the Z07.

Remember the Z07 ran within 3 secs of the ZR1 at the ring, which on a track that long is a.) within the margin of error, and b.) for all intents and purposes, an identical lap time on a regular 2-3 mile track