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which head gasket for 5.3?

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Old 04-07-2013, 01:46 PM   #1
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Default which head gasket for 5.3?

I'm about to install some SDPC ported 862 heads on my 5.3. I don't know why this is so confusing, but I am having a hard time finding head gaskets specific to the 5.3. A lot o f the suggestions come up as using the 5.7 gaskets but isn't the bore size different? any help is appreciated.
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Old 04-07-2013, 02:10 PM   #2
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Go to the gm dealer and order them ..there bout a $100 bucks get 5.3 or ls1 head gasket
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Old 04-07-2013, 11:29 PM   #3
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I used ls1/6 gaskets when I put 243 heads on my 5.3.
That's actually the gasket used on the l33 5.3
Costed me $40 at the dealer for the pair.
Bore size doesn't matter 5.3-5.7
I think the part number was 12498544
If I remember correctly???
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Old 04-08-2013, 09:47 AM   #4
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Quote:
Originally Posted by grey matter 04 View Post
I used ls1/6 gaskets when I put 243 heads on my 5.3.
That's actually the gasket used on the l33 5.3
Costed me $40 at the dealer for the pair.
Bore size doesn't matter 5.3-5.7
I think the part number was 12498544
If I remember correctly???
Sweet! Thanks
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Old 04-08-2013, 09:48 AM   #5
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I'd just go to the dealership and tell them that you need a set of 5.3 head gaskets, if nothing else they can order them for you. There are graphite gaskets and MLS gaskets for the 5.3's. Most likely you'll need the MLS gaskets with your heads, as I doubt they'll have the notch in them.

I was told it's usually a good idea to match your head gasket to the bore of your heads. So 5.3 heads get a 5.3 gasket, 5.7 heads get a 5.7 gasket.
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Old 04-08-2013, 10:28 AM   #6
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Sdpc head won't have the notch so no need for graphite gaskets. They use the new casting not old 99-00 style that had the notch.
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Old 04-08-2013, 11:04 AM   #7
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Thanks fellas. It didn't make sense seeing the larger bore gaskets being recommended for the 5.3. TSP, summit, scoggin dickey etc do not have the smaller bores listed online. I will go to the stealership.
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Old 04-08-2013, 12:00 PM   #8
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Old 04-08-2013, 12:41 PM   #9
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Hey Gadgetized, i appreciatethe link. I think what I am getting hung up and confused on is the recommendation for 5.7 gaskets on my 5.3 (as your link suggests). Am I over thinking this? Please explain the larger bore gasket recommendation.
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Old 04-08-2013, 01:12 PM   #10
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Simple. 02 silverado 5.3 its an mls gasket. i run them on my setup with boost no issue. felpro brand
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