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Failed Warhawk blocks

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Old Jun 13, 2011 | 10:24 AM
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Default Failed Warhawk blocks

I'm looking for stories of failed Warhawk blocks. I understand there have been a lot of problems with their products. According to several of you, product quality has complicated your builds.

With the above in mind, I would really like to hear from two groups. First, I would like to hear from all with problems with the sleeves dropping. Second, do any of you know of any instances where the liners have actually failed? As soon as I get a couple of stories, I'll post more about why I'm looking for the information. Thanks.

Cliff
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Old Jun 13, 2011 | 12:36 PM
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I told you about my dealing with World and the block.

Since my initial problems the motor was reassembled after the block was decked, myself. Everything checked and looked good. Got it up and running and have 15,000 miles or so on it. I had to daily drive this beast for 6 mos. and what a blast it was. Still running great and all my accessories fit without any probs. Had to drill out 2 bosses for LS1 knock sensors. Top right waterpump bolt needed to be shortened.

The block is beefy and probably will hold up to whatever I throw at it.
I did get one of the 1st blocks back in 2007. The priority main oiling is what I was looking for.
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Old Jun 13, 2011 | 12:55 PM
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good luck with the thread. I doubt many come onboard and talk openly about failures. becomes a pissing match at the end with everyone pointing at someone else.
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Old Jun 13, 2011 | 01:26 PM
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Quite a few people had issues with sleeves moving initially, once the sleeves get seated they're fine. We put torque plates on the warhawk block, heat cycled the block, then decked block, finished machine work.

World does mention sleeve issues here
http://www.theengineshop.com/product...f_file-129.pdf
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Old Jun 13, 2011 | 01:35 PM
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Big,

Again, thanks. Once you got the decking issue handled are you happy with what you have? I like the strength and oiling characteristics of this block. If I can keep mine and build it reliably, I will.

Honestly, if there is a tried and true solution to the sleeves that works, I'm good. We all pay a good amount of money to play in this arena. I just want to make certain I'm getting what I paid for, and that it will be reliable at the end of the day.
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Old Jun 13, 2011 | 01:41 PM
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Phil,

I'm not looking to start a pissing match. The only real use for these forums is to share information. There are only two aftermarket blocks out there in the LS7 ballgame. I am interested in getting a successful build on my project. And I can dispel a myth or two in the process, I'm good.

We all know the after-market is a funny place. Sometime products get to the market before they are vetted like OEM. I can live with that. I want to know and understand the weakness in the Warhawk before it's done and on the road. I would also hate to see that block suffer from endless bad press if it is in fact a good foundation from which to build a STRONG, RELIABLE CUSTOM ENGINE.
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Old Jun 13, 2011 | 01:43 PM
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I am sure if you search on here, you will find the post about the gentleman on another porformance site who had a built block with a fairly large CI stroker. The sleeve failed and was contributed to the extra boring for the larger displacement, apearantly the sleeve had moved off center and when bored, made 1 side of the sleeve much thinner than all of the rest. I will try to look for it myself too.
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Old Jun 13, 2011 | 01:47 PM
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Originally Posted by XLR2006
Phil,

I'm not looking to start a pissing match. The only real use for these forums is to share information. There are only two aftermarket blocks out there in the LS7 ballgame. I am interested in getting a successful build on my project. And I can dispel a myth or two in the process, I'm good.

We all know the after-market is a funny place. Sometime products get to the market before they are vetted like OEM. I can live with that. I want to know and understand the weakness in the Warhawk before it's done and on the road. I would also hate to see that block suffer from endless bad press if it is in fact a good foundation from which to build a STRONG, RELIABLE CUSTOM ENGINE.
I understand 100%. Just saying, you dont hear about many of the failures that happen around the world(not directed at world just in general) Nobody wants to come on to a web board and state they had failures. No one besides the engine builder really knows what happened.... just my .02. Did you buy a warhawk block?
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Old Jun 13, 2011 | 02:03 PM
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Phil,

I understand what you're saying. I'm just hoping to get some good information before I start assembling components. Yes, So far I have the block crank rods piston ect.... I will likely make a change or two before I get to final assembly.

I actually have a Warhawk set up as well as an LS7 set up. Trying to get to what I want to build and how I want to build it.

Hmmnnn... maybe I should have thought about all this before I started buying...lol Oh well...
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Old Jun 13, 2011 | 02:11 PM
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Originally Posted by XLR2006
Phil,

I understand what you're saying. I'm just hoping to get some good information before I start assembling components. Yes, So far I have the block crank rods piston ect.... I will likely make a change or two before I get to final assembly.

I actually have a Warhawk set up as well as an LS7 set up. Trying to get to what I want to build and how I want to build it.

Hmmnnn... maybe I should have thought about all this before I started buying...lol Oh well...
If you have an unseasoned block, I would enlist the help of a reputable party.
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Old Jun 13, 2011 | 06:39 PM
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Originally Posted by XLR2006
Phil,

I understand what you're saying. I'm just hoping to get some good information before I start assembling components. Yes, So far I have the block crank rods piston ect.... I will likely make a change or two before I get to final assembly.

I actually have a Warhawk set up as well as an LS7 set up. Trying to get to what I want to build and how I want to build it.

Hmmnnn... maybe I should have thought about all this before I started buying...lol Oh well...

Not all the Warhawk blocks are bad. Problem is World has been known to ship some junk blocks. You need to make sure to verify all your lifter bores, mains, etc. before starting any machine work. Like AES mentioned, the proper procedure for decking the block is extremly important. Using a machinist that is familiar with Warhawk blocks will be in your better interest.

Sounds like AES is familiar with the Warhawk blocks and I know for a fact that WESTON MACHINE in N.J. has done quite a few of them....Best of luck with your build.
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Old Jun 13, 2011 | 09:10 PM
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I've built four of them. The first one , which was 2008, needed the mains line honed as the #2 was off by four or five tenths. All the others I've done since then have been fine.

Check everything, as you should do with any new block including a GM block.
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Old Jun 13, 2011 | 09:10 PM
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I've built four of them. The first one , which was 2008, needed the mains line honed as the #2 was off by four or five tenths. All the others I've done since then have been fine.

Check everything, as you should do with any new block including a GM block.
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Old Jun 14, 2011 | 09:23 AM
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Thanks guys. Whistler, do you know any machine shops close to Denver that are your contemporary? I need someone out here that is familiar with this block. Thanks again. I can't wait to get this build going.
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Old Jun 14, 2011 | 10:40 AM
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^^^ Start a thread when you do, let us know how it goes.
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Old Jun 14, 2011 | 11:38 AM
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As soon as I located a machine shop out toward Colorado with experience building this block, I'll start the thread.
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Old Jun 14, 2011 | 03:41 PM
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Ship it to Erik at HKE.
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Old Jun 15, 2011 | 10:47 AM
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where is HKE? I've been building hotrods for 25 years and one of the things I've learned is that you want to be able to watch the project no matter how good that talent you're using. No disrespect intended. Just my .02.
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Old Jun 15, 2011 | 02:15 PM
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Originally Posted by Whistler
Ship it to Erik at HKE.
^^^^This. Erik will take care of you and knows about warhawk blocks
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Old Jun 15, 2011 | 03:04 PM
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I know this will sound dumb, but what is Erik's contact info?
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