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using helicoiled block for boost.

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Old Jul 24, 2013 | 05:07 AM
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Default using helicoiled block for boost.

Hey wussup guys im about ready to start my turbo build. I was tossing around the stock 5.3 motor or using my forged 347 that needs rebuilt. The block has 1 headbolt hole that is helicoiled. Will this be safe to boost or should I grab another 5.7 block to put the rotating assembly in? Will be shooting for around 900rwhp
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Old Jul 24, 2013 | 06:59 AM
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LS1/6 block is not thay great for boost to begin with. Slam that Rotating Assemble in the LM7 block.
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Old Jul 24, 2013 | 08:58 AM
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Nothing wrong with a helicoiled head bolt. Usually they are stronger than the threaded block itself.
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Old Jul 24, 2013 | 09:16 AM
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Time Sert makes a nice head bolt repair kit for LS blocks if you wanted to redo it.
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Old Jul 24, 2013 | 12:57 PM
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Originally Posted by Inspector12
Nothing wrong with a helicoiled head bolt. Usually they are stronger than the threaded block itself.
Hmm I didnt know that. just didnt want to lift a head.
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Old Jul 24, 2013 | 12:59 PM
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It will probably be fine, but I would use studs to reduce the stress on the helicoil.
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Old Jul 24, 2013 | 12:59 PM
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Originally Posted by LT1RAY
Time Sert makes a nice head bolt repair kit for LS blocks if you wanted to redo it.
I just might have to look into that. Thanks man
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Old Jul 24, 2013 | 11:53 PM
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Originally Posted by Inspector12
Nothing wrong with a helicoiled head bolt. Usually they are stronger than the threaded block itself.
Why would you wanna redo it?

Like said above, helicoil can be stronger than a regular thread anyway.
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Old Jul 25, 2013 | 02:09 AM
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Originally Posted by DEFYANT
LS1/6 block is not thay great for boost to begin with. Slam that Rotating Assemble in the LM7 block.
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Old Jul 25, 2013 | 03:51 AM
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I agree with you lol, but i also believe the aluminum LS1 block isnt the best choice for 1,000+ crank hp like the OP is aiming for.
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Old Jul 25, 2013 | 11:29 AM
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Tjanks guys. Well now u got me thinking with the aluminum block at 1, 000 hp mark. Hmm I think im going to let er eat and see what it does. Build thread coming soon. Thanks fellas
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Old Jul 25, 2013 | 11:27 PM
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Originally Posted by badazz99ss
Tjanks guys. Well now u got me thinking with the aluminum block at 1, 000 hp mark. Hmm I think im going to let er eat and see what it does. Build thread coming soon. Thanks fellas
I've never used anything but aluminum blocks and been making over 1K at the wheels for a LONG time on all different size motors. And next they will be telling you that you can't do it with out a 6 bolt block etc... But Ive never owned one of those either. GL! Pick your parts well and you will be fine.
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Old Jul 26, 2013 | 12:03 AM
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Originally Posted by Inspector12
I've never used anything but aluminum blocks and been making over 1K at the wheels for a LONG time on all different size motors. And next they will be telling you that you can't do it with out a 6 bolt block etc... But Ive never owned one of those either. GL! Pick your parts well and you will be fine.
We all have our opinions and like I said the ls1 block will work, but is it really the best option when your gonna put that klind of money and power into it? Iron blocks are a lot more stable then aluminum its proven.

Dont get me wrong I just built an aluminum block for my cobra instead of going with another stock iron block like it came with. I took the 70lbs of weight savings over the stability of the iron block because i wont be pushing it quite that hard.
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Old Jul 27, 2013 | 06:43 AM
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I would put the rotating assembly in the iron 5.3 but being it would have to be bored out to a 347 what would be the point being the walls wouldnt be thick any longer.
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Old Jul 27, 2013 | 08:16 AM
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Originally Posted by LilJayV10
facepalm
Shove your facepalm up your ***. For what the OP is aiming for the LS1/6 block would be an issue.

I was reading over Fireballs thread yesterday, and one of the post was that Shawn from VA. Speed saying that he stripped out a head bolt thread in the RHS block, and that he was going to Helicoil it. Apparently it worked LOL.

Last edited by DEFYANT; Jul 27, 2013 at 08:21 AM.
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Old Jul 27, 2013 | 11:17 AM
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why not open up all the holes for 1/2" studs, and kill 2 birds with one stone?
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