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Old Dec 24, 2009 | 01:00 PM
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Default Head Gaskets

I know is off topic but I'm putting together a LQ9 for a friend who is going FI in his Corvette.Are the stock bore 6.0 head gaskets the same as the stock bore LS1?
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Old Dec 24, 2009 | 01:08 PM
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Everything is the same except the bore in the gasket. If you're asking if you can use an LS1 gasket, the answer is "no". You have to get a 6.0l gasket.
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Old Dec 24, 2009 | 01:11 PM
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That was what I thought just making sure.
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Old Dec 24, 2009 | 11:43 PM
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For the extra money the new ZR1 gaskets will work well for an FI setup.
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Old Dec 24, 2009 | 11:48 PM
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how thick are the ZR1 gaskets? I have heard they are around .80.
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Old Dec 25, 2009 | 12:21 AM
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Yeah I wonder what the difference is?
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Old Dec 25, 2009 | 11:52 PM
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I have them in my 403.They are .080 thick.I don't know if that is compressed though.They can handle 20% more clamping force then a LS3 gasket.
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Old Dec 28, 2009 | 12:13 AM
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When changing to the new ZR1 gasket do u need to change the pushrod length? Also what is the bore on those gaskets?
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Old Dec 28, 2009 | 01:20 AM
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I don't know if .030-.040 is enough to change push rods.I would definately check it.You need a 4.000 bore or bigger.
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Old Dec 28, 2009 | 07:09 AM
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I have never had an issue with the standard MLS gaskets. I have never read about anyone having an issue with them either. No reason to take away your cylinder quench, lower your compression and decrease the effective length of your pushrods IMHO.
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Old Dec 28, 2009 | 11:54 AM
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If your compression is were you want it with a standard MLS gasket then for sure go ahead and use it.They have worked well for lots of guys in the past.I used the ZR1 gasket as I already had my pistons and heads and I just wanted to lower my compression a little more.I also had not gotten my push rods yet so that wasn't an issue for me.Rob at Champion had told me they were even better then the standard gasket and I liked the fact that they were made by GM to hold 20% more torque then the standard gasket.Either way you can't go wrong with GM.
I have used Cometic gaskets in the past on a couple of my 8 second cars because they had different thickness gaskets.They didn't work for me.
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Old Dec 28, 2009 | 01:09 PM
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Will this work on a LS7? I'm thinking not but making sure.
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Old Dec 28, 2009 | 02:20 PM
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Nope. That would require the LS7 gasket.
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Old Dec 28, 2009 | 04:33 PM
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QUOTE=BLOWNBLUEZ06;1572559330]I have never had an issue with the standard MLS gaskets. I have never read about anyone having an issue with them either. No reason to take away your cylinder quench, lower your compression and decrease the effective length of your pushrods IMHO. [/QUOTE]

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