Notices
C6 Corvette ZR1 & Z06 General info about GM’s Corvette Supercar, LS9 Corvette Technical Info, Performance Upgrades, Suspension Setup for Street or Track
Sponsored by:
Sponsored by: Kraken

Z06 vs ZR1 purchase?

Thread Tools
 
Search this Thread
 
Old 07-10-2018, 10:12 PM
  #1  
dwe8922
Advanced
Thread Starter
 
dwe8922's Avatar
 
Member Since: Aug 2013
Posts: 62
Likes: 0
Received 14 Likes on 11 Posts

Default Z06 vs ZR1 purchase?

I am hoping to make a purchase in the Fall, and am hoping to get some advice between the two cars. I've driven a Z06 a few times, both on the road, and on track in a student's car at a DE. It had good power, and I enjoyed the handling. I've also driven a ZR1 briefly, and never really got the chance to push it. It felt like it had more power and a more sophisticated ride, but I drove the two cars over a year apart.

I've had in my mind for a long time that I would buy a Z06 one day. I had a C4 ZR1 briefly a long time ago, and really miss that car, so ZR1 has always been in the back of my mind too. I generally prefer the lighter track focused car. I drive a GT3 almost as a daily car, and club race a GT3 based race car. I've watched pretty much all of the youtube reviews on both cars, and the opinions seem to vary widely (I guess that is to be expected). I even found an old Evo issue reviewing the ZR1 and Z06. I think either car would be a lot of fun, and but with the current pricing, either car is a possibility. I plan to drive the car regularly along with the GT3. I won't take it to the track often, but will on occasion, so I want it to be able to hold up in that environment (I've driven 2 C7 Z06's on track, and both overheated on me; not with my student driving though).

Reliability wise, I'm assuming that the ZR1's seem to be pretty well sorted out without any real know drivetrain issues. I'm assuming the same for the Z06 after having the heads redone for about $3k?

These are the pros and cons as I see it from my (limited) experience with both cars. Any advice?

Z06 PROS
-lighter weight
-normally aspirated
-lower cost
-steel rotors

Z06 CONS
-valve guide issue
-stiffer ride

ZR1 PROS
-magnetic shocks
-more power
-body kit
-ceramic rotors performance/no dust
-shorter gear ratios

ZR1 CONS
-heavier weight
-hood plexiglass
-less peaky torque curve than NA
-ceramic rotors cost

Thanks,
David
Old 07-10-2018, 10:18 PM
  #2  
MTPZ06
Team Owner
Support Corvetteforum!
 
MTPZ06's Avatar
 
Member Since: Dec 2008
Location: Honolulu HI
Posts: 35,883
Received 1,592 Likes on 1,335 Posts

Default

You can get a Z07 equipped Z06 car that will offer Mag ride and CCB's. Heck, look at 2011 Carbon edition...its essentially a ZR1 with an LS7. Look into the "brick mod" if you plan on pushing a lot of heat through that ZR1 blower on a track. Cheap, but necessary.
Old 07-10-2018, 10:19 PM
  #3  
Che70velle
Racer
 
Che70velle's Avatar
 
Member Since: Jan 2017
Location: Dawsonville Ga
Posts: 285
Received 85 Likes on 60 Posts
Default

If I were in the market for another Vette, I’d wait and see what the C6 ZR1 market starts to do, and then decide. If given the choice, and money wasn’t an issue in my decision, I’d go with the C6 ZR1. On the other hand, the Z06 is becoming very affordable quickly.
Old 07-10-2018, 10:23 PM
  #4  
reasonable suspicion
Melting Slicks
 
reasonable suspicion's Avatar
 
Member Since: Jan 2013
Location: what ain't no country I ever heard of
Posts: 2,220
Received 324 Likes on 247 Posts
Default

zr1 has the same valve issue
zr1 25k more initial cost for like condition, mileage
zr1 easier to modifyfor increased power
zr1 mag shocks expensive
Old 07-11-2018, 12:18 PM
  #5  
NotreOkc
Pro
Support Corvetteforum!
 
NotreOkc's Avatar
 
Member Since: Jun 2009
Location: Frisco TX
Posts: 608
Received 125 Likes on 86 Posts

Default

I have owned both. Both are fantastic in their own ways. But, now having my ZR1 I would NEVER go back to the Z06. I like the clear lens and the CC rotors will last the life of the car if you do not track it much.
Just my opinion.
And the ZR1 does not have the valve guide issue. Insert eye roll.

Last edited by NotreOkc; 07-11-2018 at 12:28 PM.
Old 07-11-2018, 12:41 PM
  #6  
jayyyw
Le Mans Master
 
jayyyw's Avatar
 
Member Since: Jun 2015
Location: Austin Tx
Posts: 5,583
Received 897 Likes on 686 Posts
Default

Originally Posted by reasonable suspicion
zr1 has the same valve issue
zr1 25k more initial cost for like condition, mileage
zr1 easier to modifyfor increased power
zr1 mag shocks expensive
This.

ZR1 is also much more expensive to mod, but the ceiling is much higher as well.
Old 07-11-2018, 12:50 PM
  #7  
NotreOkc
Pro
Support Corvetteforum!
 
NotreOkc's Avatar
 
Member Since: Jun 2009
Location: Frisco TX
Posts: 608
Received 125 Likes on 86 Posts

Default

Originally Posted by jayyyw
This.

ZR1 is also much more expensive to mod, but the ceiling is much higher as well.
What are you basing either of these opinions on? Same valve guide issue and more expensive to mod?

Last edited by NotreOkc; 07-11-2018 at 12:59 PM.
Old 07-11-2018, 01:58 PM
  #8  
MTPZ06
Team Owner
Support Corvetteforum!
 
MTPZ06's Avatar
 
Member Since: Dec 2008
Location: Honolulu HI
Posts: 35,883
Received 1,592 Likes on 1,335 Posts

Default

Originally Posted by NotreOkc
What are you basing either of these opinions on? Same valve guide issue and more expensive to mod?
Not looking to debate or convince you of anything...believe what you want, but there have been incidents. Less ZR1's produced, less incidents obviously...but they certainly aren't immune to the same failure. https://www.corvetteforum.com/forums...on-the-cf.html

Again, the number of incidents means little to me these days...all that matters to me is if my car is affected. If I had a ZR1, I'd at least take a look at what I had going on under the valve covers. As long as people are aware that there could be an issue, that's what I care about these days...what they choose to do with that information is on them.
The following users liked this post:
Gary '09 C6 (07-11-2018)
Old 07-11-2018, 02:04 PM
  #9  
StealthFRC
Melting Slicks
 
StealthFRC's Avatar
 
Member Since: Jun 2011
Location: VERNON CT
Posts: 2,315
Received 53 Likes on 46 Posts

Default

Zr1. Change the inter cooler bricks and enjoy. It’s an amazing car, great handling, amazingly comfortable and they are very affordable right now.
If you plan on buying one and plan to test drive, bring a dash logic and look at the intake temps, makes sure iat2’s stay low under sprinted driving, if they skyrocket, then the bricks are shot and you should stay away from the car. Spend the extra money on the better overall car, you won’t regret it.
Old 07-11-2018, 02:26 PM
  #10  
NotreOkc
Pro
Support Corvetteforum!
 
NotreOkc's Avatar
 
Member Since: Jun 2009
Location: Frisco TX
Posts: 608
Received 125 Likes on 86 Posts

Default

Originally Posted by MTPZ06
Not looking to debate or convince you of anything...believe what you want, but there have been incidents. Less ZR1's produced, less incidents obviously...but they certainly aren't immune to the same failure. https://www.corvetteforum.com/forums...on-the-cf.html

Again, the number of incidents means little to me these days...all that matters to me is if my car is affected. If I had a ZR1, I'd at least take a look at what I had going on under the valve covers. As long as people are aware that there could be an issue, that's what I care about these days...what they choose to do with that information is on them.
I hear you, no debate here. Momma didn't raise no fool so I do have an extended warranty (for generally anything that might go wrong).
I would not call this an "issue" with the ZR1. But that is just me.
Old 07-11-2018, 03:34 PM
  #11  
jayyyw
Le Mans Master
 
jayyyw's Avatar
 
Member Since: Jun 2015
Location: Austin Tx
Posts: 5,583
Received 897 Likes on 686 Posts
Default

Originally Posted by NotreOkc
I hear you, no debate here. Momma didn't raise no fool so I do have an extended warranty (for generally anything that might go wrong).
I would not call this an "issue" with the ZR1. But that is just me.
Just because you wouldn't call it an issue, doesn't make it a non-issue. I know ZR1 owners that have had valve guides out of spec and know of one that dropped a valve.

As for more expensive mods: $1200+ and +porting - snouts, $900 CAIs, Reinforced bricks, $2000 supercharger porting, $2500+ cooling mods, $1000 boost throttle bodies, etc....
Old 07-11-2018, 03:54 PM
  #12  
reasonable suspicion
Melting Slicks
 
reasonable suspicion's Avatar
 
Member Since: Jan 2013
Location: what ain't no country I ever heard of
Posts: 2,220
Received 324 Likes on 247 Posts
Default

Originally Posted by jayyyw
Just because you wouldn't call it an issue, doesn't make it a non-issue. I know ZR1 owners that have had valve guides out of spec and know of one that dropped a valve.

As for more expensive mods: $1200+ and +porting - snouts, $900 CAIs, Reinforced bricks, $2000 supercharger porting, $2500+ cooling mods, $1000 boost throttle bodies, etc....

yep
Old 07-11-2018, 04:06 PM
  #13  
NotreOkc
Pro
Support Corvetteforum!
 
NotreOkc's Avatar
 
Member Since: Jun 2009
Location: Frisco TX
Posts: 608
Received 125 Likes on 86 Posts

Default

Originally Posted by jayyyw
Just because you wouldn't call it an issue, doesn't make it a non-issue. I know ZR1 owners that have had valve guides out of spec and know of one that dropped a valve.

As for more expensive mods: $1200+ and +porting - snouts, $900 CAIs, Reinforced bricks, $2000 supercharger porting, $2500+ cooling mods, $1000 boost throttle bodies, etc....
If that is the case then every engine has "issues." So you know of 1 out of ~4600 LS9 engines that dropped a valve? Was it modded?
Again, I would not call that an "issue."

Last edited by NotreOkc; 07-11-2018 at 04:08 PM.
Old 07-11-2018, 04:13 PM
  #14  
Tonylmiller
Race Director
 
Tonylmiller's Avatar
 
Member Since: Apr 2006
Location: Huntsville AL
Posts: 11,845
Received 526 Likes on 343 Posts

Default

I'd buy the ZR1. Unless I was going to track it. For strictly track use, I would go with the Z06.
Old 07-11-2018, 04:29 PM
  #15  
jayyyw
Le Mans Master
 
jayyyw's Avatar
 
Member Since: Jun 2015
Location: Austin Tx
Posts: 5,583
Received 897 Likes on 686 Posts
Default

Originally Posted by NotreOkc
If that is the case then every engine has "issues." So you know of 1 out of ~4600 LS9 engines that dropped a valve? Was it modded?
Again, I would not call that an "issue."
Okay, you just want to argue. Have a nice day.
Old 07-11-2018, 04:31 PM
  #16  
NotreOkc
Pro
Support Corvetteforum!
 
NotreOkc's Avatar
 
Member Since: Jun 2009
Location: Frisco TX
Posts: 608
Received 125 Likes on 86 Posts

Default

Originally Posted by jayyyw
Okay, you just want to argue. Have a nice day.
Not at all. Based on the sheer numbers I do not call it an issue. You do.
Have a good one as well.

Last edited by NotreOkc; 07-11-2018 at 04:33 PM.
Old 07-11-2018, 06:02 PM
  #17  
StealthFRC
Melting Slicks
 
StealthFRC's Avatar
 
Member Since: Jun 2011
Location: VERNON CT
Posts: 2,315
Received 53 Likes on 46 Posts

Default

Originally Posted by jayyyw
Just because you wouldn't call it an issue, doesn't make it a non-issue. I know ZR1 owners that have had valve guides out of spec and know of one that dropped a valve.

As for more expensive mods: $1200+ and +porting - snouts, $900 CAIs, Reinforced bricks, $2000 supercharger porting, $2500+ cooling mods, $1000 boost throttle bodies, etc....

more expensive mods but you end up with a faster car with a much more reliable motor that would be way more user friendly while driving.
The following users liked this post:
Texasthunder (07-12-2018)

Get notified of new replies

To Z06 vs ZR1 purchase?

Old 07-11-2018, 07:14 PM
  #18  
TXshaggy
Drifting
 
TXshaggy's Avatar
 
Member Since: May 2013
Location: Texas Hill Country Texas
Posts: 1,972
Received 1,093 Likes on 608 Posts
Default

Originally Posted by NotreOkc
Not at all. Based on the sheer numbers I do not call it an issue. You do.
Have a good one as well.
Google up the Katech report on LS7/9 valve guide issues on this forum. They report same problems with LS9s. Don’t read about them because far fewer produced and of those produced significant number shoved into garages and not driven.
Old 07-11-2018, 07:22 PM
  #19  
MOTOWN Z
Instructor
 
MOTOWN Z's Avatar
 
Member Since: Mar 2014
Location: Atlanta Georgia
Posts: 164
Received 26 Likes on 23 Posts
Default

Why is it every single time a ZR1 is mentioned it turns into a pointless pissing match? we all love these cars , but ill take a ZR1 any day over a Z06 it doesn't mean Z06 owners need to be butt hurt over who's car is better!
The following 3 users liked this post by MOTOWN Z:
Che70velle (07-11-2018), NotreOkc (08-15-2018), Texasthunder (07-12-2018)
Old 07-11-2018, 07:43 PM
  #20  
jayyyw
Le Mans Master
 
jayyyw's Avatar
 
Member Since: Jun 2015
Location: Austin Tx
Posts: 5,583
Received 897 Likes on 686 Posts
Default

Originally Posted by StealthFRC
more expensive mods but you end up with a faster car with a much more reliable motor that would be way more user friendly while driving.
Believe I said that.


Quick Reply: Z06 vs ZR1 purchase?



All times are GMT -4. The time now is 09:56 AM.