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Old May 2, 2016 | 09:09 AM
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48rat's Avatar
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Default Gasket choice

Hey guys! I'm trying to find out what head gasket to run on my 99 4.8 when I stud the heads. I am starting to push water so it's time to upgrade I guess!! Thanks
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Old May 2, 2016 | 09:16 AM
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ls9 head gaskets work great
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Old May 2, 2016 | 09:20 AM
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what is your set up? boost etc...
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Old May 2, 2016 | 02:28 PM
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From: Norn Iron
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Originally Posted by 48rat
what is your set up? boost etc...
Or more importantly...what is your setup ? you're the one asking for assistance, give people info that will help them do that.
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Old May 2, 2016 | 05:05 PM
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Stock 4.8 76mm on3 80 air. Been up to 15psi so far which is prob why I am pushing water
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Old May 2, 2016 | 05:09 PM
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bad tuning could be why, bad build, etc etc.

Just stick some studs and LS9 gaskets on it. Although even stock 4.8 MLS gaskets should be able to hold 15psi all day long, and all night long if tuned correctly.

MLS gaskets just work, and I'd prefer OEM versions over aftermarket in most cases...plus they're usually far cheaper anyway
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Old May 2, 2016 | 05:30 PM
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What cylinder heads? I thought the early stuff had notches on the deck..
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