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Old Sep 15, 2019 | 06:14 PM
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Default LS7 failure

Hello,
I had AHP do my cylinder head and cam on my z06 which had 11,800 miles. They did the moldstar90, valves, springs as well. with less than 2800 miles after headwork by AHP, the valve assembly failed. I'm sitting on possibly needing a new longblock on a z06 with approximately 14,000 miles on the clock. I'm looking for a reputable shop that will honor their warranty for failed workmanship (also any damaged caused by their failure). Do they exist? or should I just start thinking about doing most of the work myself. Any recommendatins

Here is a video of the failure:

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Old Sep 15, 2019 | 07:18 PM
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Just get with Erik of HPR. Done. Would say my builder Zach, but he's backed up with triple digit Coyotes.

Added no 1 really gives a warranty on a hi performance engine.
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Old Sep 15, 2019 | 07:56 PM
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That sucks, there really doesn't seem to be a solid fix for those heads, glad I sold mines.
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Old Sep 15, 2019 | 07:57 PM
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Ls7 heads are great but go aftermarket
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Old Sep 15, 2019 | 10:01 PM
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Here my take ask someone with a shaft mounted rocker system do they have the same problems...reference. John B with this? Both heads were gm ls7 heads factory and Lsx version.
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Old Sep 15, 2019 | 10:27 PM
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Hello,

Thanks for the input. Well, hopefully I can find a shop that knows what they are doing. AHP failed twice. Once when they originally worked on my car and again when they had my car back to check on the water consumption. I feel that a competent shop would have caught something being wrong and saved my engine.
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Old Sep 16, 2019 | 08:36 PM
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Originally Posted by thepilot
Hello,

Thanks for the input. Well, hopefully I can find a shop that knows what they are doing. AHP failed twice. Once when they originally worked on my car and again when they had my car back to check on the water consumption. I feel that a competent shop would have caught something being wrong and saved my engine.
What AHP won't make it right?! I knew eventually AHP and all their nut swingers would start to fall. All their smoke blowing jibberish about they do this and they did that and the extra kryptonite packages bla bla bla it was only a matter of time. You see when they came on the scene and started to put down a head company that has been in business for 40 years and also did thousands of LS7 heads over the years, it was just a matter of time before they become a fart in the wind. Your not the only one to have this happen to but it's hard to find because of the heavy PR campaign squashing all the problems down before they hit the NET! So sorry for your loss.....

Last edited by ramairws6; Sep 16, 2019 at 09:43 PM.
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Old Sep 16, 2019 | 09:05 PM
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Yeah, I should have known. Working on their website, I would get the BS product descriptions they wanted me to upload. The next day of the failure, they told me that they can't cover it and told me to bring it in for a tear down. I refused to drop it off unless they were to give me an estimate of what it would cost for the tear down and any other associated costs. Kohle seemed more concerned that I don't take it to another shop for tear down (maybe to keep someone else exposing their failure). Anyways, at the corvette forum, they are vendors and I would see how they manipulate their posts and then have it removed. I think he does this to ensure that those subscribed to the thread get a final response from him (last word of BS) before he has the thread removed. (I posted it late on weekend, removed the next morning). I did get his response via email since I was subscribed. I made a video of it here


He went as far as putting a paypal chargeback against me for prior webhosting (he makes a comment that I am hosting it from my house when he knows its is hosted on azure). paypal saw through the fraud and dropped it immediately. anyways, he is full of it and would rather lie and cheat a customer instead of owning up to his mistakes (honestly, he doesn't really have much experience and doesn't know half as much as he think he does). Shop is a very small operation pretending to be more than what it is. Most of his expertise is smoke and mirrors.
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Old Sep 16, 2019 | 09:42 PM
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Originally Posted by thepilot
Yeah, I should have known. Working on their website, I would get the BS product descriptions they wanted me to upload. The next day of the failure, they told me that they can't cover it and told me to bring it in for a tear down. I refused to drop it off unless they were to give me an estimate of what it would cost for the tear down and any other associated costs. Kohle seemed more concerned that I don't take it to another shop for tear down (maybe to keep someone else exposing their failure). Anyways, at the corvette forum, they are vendors and I would see how they manipulate their posts and then have it removed. I think he does this to ensure that those subscribed to the thread get a final response from him (last word of BS) before he has the thread removed. (I posted it late on weekend, removed the next morning). I did get his response via email since I was subscribed. I made a video of it here

https://youtu.be/9iYXNFeqwGU

He went as far as putting a paypal chargeback against me for prior webhosting (he makes a comment that I am hosting it from my house when he knows its is hosted on azure). paypal saw through the fraud and dropped it immediately. anyways, he is full of it and would rather lie and cheat a customer instead of owning up to his mistakes (honestly, he doesn't really have much experience and doesn't know half as much as he think he does). Shop is a very small operation pretending to be more than what it is. Most of his expertise is smoke and mirrors.
What's funny about what you just said is everyone that has any experience with the LS7 hands on knows they are only smoke and mirrors. All they do is pay for their protection on these sites. Guaranteed they will get their jabs in on this post and everything will go bye bye as in...……………...POOF!! Sad but true and it's all about the Benjamin's
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Old Sep 16, 2019 | 09:47 PM
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And I will like to give credit where credit is due. Richard took the high road on all of the sh%$# spewed and I don't think I ever seen him respond once to the lies against him. Now that is a class act business and will show you why WCCH will be around for years to come and AHP will not
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Old Sep 16, 2019 | 10:44 PM
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You know what's funny and i learned....A lot of these specialized sites are for BS vendors who pay to be on there so they can peddle the BS, just think about. Another reason i stick to YB, more real people and builders and BS will be called out and the builder..don't post there i don't F with u. I go by the rule of Who's making fast cars and not the BS & Hype. .

Sorry 4 your loss
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Old Sep 16, 2019 | 10:52 PM
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Hey, thanks.

Going forward, how do I make this more reliable. I'm thinking of going with some aftermarket heads. Don't know which ones. What do you guys think about the RHS block and heads?
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Old Sep 16, 2019 | 11:07 PM
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RHS Heads are TRASH!

Call FED or Dennis Wheat, DM, BES....etc.
Brodix is the best thing going for the cost with Meat for porting and offers a big spring package. Some may say other wise but this is from the best of the best...no sales involved.
All Pro, CID, & Mast are more costly and Brodix heads where only 9 hp off the Mast heads in that Ls7 shoot out. Another mag used the Same engine. 1 group runs Hot Rod, Car Craft, Super Chevy, etc........i read between the lines and BS.

http://www.superchevy.com/how-to/eng...ylinder-heads/
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Old Sep 16, 2019 | 11:12 PM
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Also when you see hi hp street builds ....just look @ the compression. Know of a few making just as much and more with other castings So a name isn't about.......But you know and learned this.

My builder built a 1xxxx hp 5.0 guy F's it up with over Reving it @ the track...spun a main...Guy did something with Locking the dohc, something along those lines. Was told" you buy the parts we'll fix it, but after this Don't come Back."

Last edited by Smokey B; Sep 16, 2019 at 11:19 PM.
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Old Sep 17, 2019 | 06:33 PM
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Originally Posted by thepilot
….....I'm looking for a reputable shop that will honor their warranty for failed workmanship (also any damaged caused by their failure). Do they exist? …... Any recommendatins
Texas Speed and Performance.

https://www.texas-speed.com/c-3189-e...t-to-suit.aspx

KW
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Old Sep 17, 2019 | 06:56 PM
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Originally Posted by thepilot
Hello,
I had AHP do my cylinder head and cam on my z06 which had 11,800 miles. They did the moldstar90, valves, springs as well. with less than 2800 miles after headwork by AHP, the valve assembly failed. I'm sitting on possibly needing a new longblock on a z06 with approximately 14,000 miles on the clock. I'm looking for a reputable shop that will honor their warranty for failed workmanship (also any damaged caused by their failure). Do they exist? or should I just start thinking about doing most of the work myself. Any recommendatins

Here is a video of the failure:

https://youtu.be/kGErkFpXEP8
Damn!

That's not good at all. Well look at it this way "If you did the work yourself then you would only have yourself to blame"
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Old Sep 17, 2019 | 09:22 PM
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Well, I would say it would be a learning experience for me. Problem is, normally you pay a professional to avoid these learning experiences. When they fail at what they were paid to do, then its a different story. wouldn't you agree?

QUOTE=01CamaroSSTx;20149574]Damn!

That's not good at all. Well look at it this way "If you did the work yourself then you would only have yourself to blame"[/QUOTE]
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Old Sep 17, 2019 | 09:25 PM
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Absolutely! When it comes down to cylinder heads I've learned my lesson the hard way which is why that is best left for the Pro's.
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Old Sep 18, 2019 | 06:47 AM
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So what is happening with car now looks like some of this happened sometime ago. I presume engine is not apart as you are not sure you need a motor yet? If you were low all that water didn't car run hot or did you just keep topping off?
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Old Sep 18, 2019 | 07:50 AM
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Have you at least pulled the valvecovers to see if a rocker arm came loose or there is any other visual problem to see? Valve stem height etc...

Sorry to hear about the issues.... High performance cars are certainly not ever going to be trouble free. While it sucks to spend all the money on those heads.... parts can fail... and there is no such thing as a 100% guaranteed perfect result for the rest of the time you own it.
Hopefully they step up in some way to help in some the labor or partial parts coverage if they are in fact at fault.
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