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LS1 cracked intake manifold?

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Old Jan 17, 2013 | 06:37 PM
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Default LS1 cracked intake manifold?

I've posted about this issue numerous times, but I can't get a handle on it. Lean fuel codes and stumbling/stalling. Map, maf and intake seals changed. Fuel pressure good. I don't have a tuner. What's the likelihood of a cracked intake?
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Old Jan 17, 2013 | 09:52 PM
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pull it and find out
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Old Jan 19, 2013 | 11:13 AM
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just replace it with an ls6 intake cancel out the possibility and make more hp!
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Old Jan 19, 2013 | 03:06 PM
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I just replaced my pos ls1 intake with a ls6 best bang for buck. you will feel a difference although some will tell you that is not true.
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Old Jan 19, 2013 | 07:34 PM
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Another vote for pull it. I think used ones can be found for around 300-350. Its an easy job.

If you just want to find out if its the problem, I think you can spray carb cleaner around the intake and see if you have a spike in your RPMs. Though this may not work if there is a crack on the bottom or back.
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Old Jan 22, 2013 | 03:01 PM
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If you’re looking to replace your intake I have an LS1 intake I can sell you for cheap. bought it used in perfect shape for my swap and never used it because I got a good deal on a LS6 intake.

PM me if you’re interested.
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Old Jan 23, 2013 | 05:36 AM
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Skimmed through your other threads.

Fix the vacuum leak in the PCV system.
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