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Purchasing a Z06 - chances of issues with LS7??

 
Old 02-09-2019, 10:40 PM
  #21  
HT1663WB
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I traded in my 2013 Camaro ZL1 (600 RWHP) for a low mileage 2008 Z06...love the C6 Z appears to be all stock and it's much faster than the ZL1. That LS7 pulls like mad. I've read about guys getting the heads done and being out of spec again within a few thousand miles. I've also read, on the forum, about a guy who got his heads back after being re done and they were out of spec. Once you drive one and feel that 427 you won't care about anything you have read...you will want it..lol. For now I'm just going to enjoy my Z. Before you buy a base C6 look at a C5 Z06. I have one of those also and love it! Good luck.
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Old 02-10-2019, 11:04 AM
  #22  
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Originally Posted by D3troit Muscle View Post
All very great advice thank you guys! I spent about an hour reading through other posts as well. Either way Im getting a C6, just might be a base model now that i read through those threads lol.

Don't think twice about it, get a Z06 and a have a blast. Buy a GMEPP warranty and drive the car. My 2008 is untouched for 11 years now.. Miles of smiles...
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Old 02-10-2019, 11:41 AM
  #23  
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If I could back in time I would have bought a grandsport, I personally believe the ls7 is a flawed design and isn’t worth the headache.
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Old 02-10-2019, 12:28 PM
  #24  
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I have a 06Z with 55k miles an have done my guides thing 2x's. My buddy with an 07Z has 90k miles an has not even had the red plastic valve covers off his car. You never know though.
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Old 02-11-2019, 12:08 AM
  #25  
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Originally Posted by jimbob8915 View Post
I have a 06Z with 55k miles an have done my guides thing 2x's. My buddy with an 07Z has 90k miles an has not even had the red plastic valve covers off his car. You never know though.
who did the guides the first and second time? How long did they last before they were out of spec?
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Old 02-11-2019, 01:41 AM
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Originally Posted by 73DBG View Post
who did the guides the first and second time? How long did they last before they were out of spec?
First time was at 27k miles in 2013. I dont want to say who, but it was bronze guides with solid stainless exhaust valves. 2nd time was AHP. I went with the stage 4 heads with moldstar guides an hollow stem exhaust valves at 54k miles a few months ago.
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Old 02-11-2019, 02:38 AM
  #27  
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Default GM published a letter

It's on here somewhere, but GM published a letter which states it only affected a small percentage of certain years. Just FYI.
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Old 02-11-2019, 02:56 AM
  #28  
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Originally Posted by Timmyg5 View Post
It's on here somewhere, but GM published a letter which states it only affected a small percentage of certain years. Just FYI.
Yes, that was GM's official response, but we all know the admitted machining problem is not the only cause of excessive guide wear. If it was, then only those few years would experience excessive guide wear but it is a well known fact that all years are affected by excessive guide wear. Don't bury your head in the sand and think you are safe just because you are outside the years GM said they had a machining problem.
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Old 02-11-2019, 08:54 AM
  #29  
D3troit Muscle
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Wow thank you so much for all the advice guys, very much appreciated! After spending the weekend watching Z06 vids on youtube and talking to my local performance shop about a getting the heads refurbished I'm pretty sure I want a Z06. My local shop says they send the heads to American Heritage to be redone (looks like there package is about $1400) then re-installs them. Including labor what do you guys think i can expect price-wise for the whole heads job done? Maybe $3000?
Thanks!

Last edited by D3troit Muscle; 02-11-2019 at 04:31 PM.
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Old 02-11-2019, 11:13 AM
  #30  
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Originally Posted by D3troit Muscle View Post
Wow thank you so much for all the advice guys, very much appreciated! After spending the weekend watching Z06 vids on youtube and talking to my local performance shop about a getting the heads refurbished I'm pretty sure I want a Z06. My local shop says they send the heads to American Heritage to be redone (looks like there package is about $1400) then re-installs them. Including labor what do you guys think i can expect price-wise for the whole heads job done? Maybe $2400?
Thanks!
I didn't even catch your user name the first time around. I am from Detroit until a little over 3 years ago.
What shop are you going with?
Also...
Are you planning on getting a cam?
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Old 02-11-2019, 11:25 AM
  #31  
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Originally Posted by JDebler View Post
I didn't even catch your user name the first time around. I am from Detroit until a little over 3 years ago.
What shop are you going with?
Also...
Are you planning on getting a cam?
Hey man! Oh really thats awesome! Yeah I am planning on going with MJD Performance in Novi, and no, no cam for now, just want the heads fixed. thanks!
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Old 02-11-2019, 11:58 AM
  #32  
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if you want to do headers, now would be a perfect time since they have to take them off
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Old 02-11-2019, 01:51 PM
  #33  
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Originally Posted by jimbob8915 View Post
First time was at 27k miles in 2013. I dont want to say who, but it was bronze guides with solid stainless exhaust valves. 2nd time was AHP. I went with the stage 4 heads with moldstar guides an hollow stem exhaust valves at 54k miles a few months ago.
👍🏻 Same here....seems they are one of the few with actual data of the MS90 holding strong! I was just curious.
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Old 02-11-2019, 01:57 PM
  #34  
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Originally Posted by D3troit Muscle View Post
Wow thank you so much for all the advice guys, very much appreciated! After spending the weekend watching Z06 vids on youtube and talking to my local performance shop about a getting the heads refurbished I'm pretty sure I want a Z06. My local shop says they send the heads to American Heritage to be redone (looks like there package is about $1400) then re-installs them. Including labor what do you guys think i can expect price-wise for the whole heads job done? Maybe $2500?
Thanks!
Id take the middle man out....just go directly to Kohle and get your heads done, bring them to the shop for install if your not gonna do it your self....you can easily remove them yourself and AHPs kit is designed around DIY so you could do the install yourself if you wanted to, if your not comfortable no big deal I dont blame you for that, but removing is easy day.
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Old 02-11-2019, 01:58 PM
  #35  
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Originally Posted by Timmyg5 View Post
It's on here somewhere, but GM published a letter which states it only affected a small percentage of certain years. Just FYI.
That letter...


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Old 02-11-2019, 02:06 PM
  #36  
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Originally Posted by MTPZ06 View Post
That letter...

And the winner of most fitting thread GIFs.....MTPZO6🥇🏆
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Old 02-11-2019, 04:27 PM
  #37  
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Originally Posted by 73DBG View Post
I’d take the middle man out....just go directly to Kohle and get your heads done, bring them to the shop for install if your not gonna do it your self....you can easily remove them yourself and AHP’s kit is designed around DIY so you could do the install yourself if you wanted to, if your not comfortable no big deal I don’t blame you for that, but removing is easy day.
Good advice, i will definitely consider that thank you. I mean i have experience working on cars but that extends to just doing headers, cats, intakes, brake jobs etc...never come close to removing heads before...

Also I just got the total quote from my local shop which is $3100 for labor, parts, everything...a lot of money for no power gain lol.

Last edited by D3troit Muscle; 02-11-2019 at 04:32 PM.
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Old 02-11-2019, 04:32 PM
  #38  
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Originally Posted by D3troit Muscle View Post
Good advice, i will definitely consider that thank you. I mean i have experience working on cars but that extends to just doing headers, intakes, brake jobs etc...never come close to removing heads before...

Also I just got the total quote from my local shop which is $3100 for labor, parts, everything...a lot of money for no power gain lol.
throw in headers, and tune.... then you will get 40-50 extra ponies. i think i paid $5800 for that combo installed
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Old 02-11-2019, 04:33 PM
  #39  
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Originally Posted by D3troit Muscle View Post
Also I just got the total quote from my local shop which is $3100 for labor, parts, everything...a lot of money for no power gain lol.
Consider the AHP 116 camshaft and a tune...which I'd strongly recommend if you want to make more great usable power with killer driveability.

But...if that is not in your budget, no power increase is better than 100% power decrease when the valve drops.

Last edited by JDebler; 02-11-2019 at 05:25 PM.
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Old 02-11-2019, 05:01 PM
  #40  
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Originally Posted by JDebler View Post
That's a little on the high side, IMO. At least compared to what my labor was and that was also installing the AHP 110 camshaft and a tune...which I'd strongly recommend if you want to make more great usable power with killer driveabilityty.

But...if that is not in your budget, no power increase is better than 100% power decrease when the valve drops.
Lol that is very true, ya AHP charges $1400 for the head package and my local shop said $1700 for labor, head gaskets, ARP Head bolts and fluids....
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