Headgasket
Thread Starter
Instructor
Joined: Jul 2013
Posts: 107
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Headgasket
I am in the middle of doing my cyl heads on the procharged corvette.
I believe stock gasket is .052" compressed. I want same thickness/bore size as stock. I see couple options as to headgasket choice. cosmetic. mls ect.
I have attached 2 links, pretty much same specs, I am picking up arp headbolts so I want good quality headgasket.
http://www.jegs.com/i/Cometic-Gasket...791+4294828856
http://www.jegs.com/i/Mr-Gasket/720/...791+4294828856
what y'all think?????
I believe stock gasket is .052" compressed. I want same thickness/bore size as stock. I see couple options as to headgasket choice. cosmetic. mls ect.
I have attached 2 links, pretty much same specs, I am picking up arp headbolts so I want good quality headgasket.
http://www.jegs.com/i/Cometic-Gasket...791+4294828856
http://www.jegs.com/i/Mr-Gasket/720/...791+4294828856
what y'all think?????
AMP Racing
Joined: Aug 2006
Posts: 10,753
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From: Washington TWP NJ
2023 C5 of the Year Finalist - Modified
2017 C5 of Year Finalist
St. Jude Donor '09-'10-'11-'12
Thread Starter
Instructor
Joined: Jul 2013
Posts: 107
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I have heard mixed reviews on the LS9 headgasket.
Couple .100 thou bigger bore size also. Which probably be ok but not sure would prefer tighter bore clearence.
However heard best for boost.
http://www.jegs.com/i/Chevrolet-Performance/809/12589226/10002/-1
VS
http://www.jegs.com/i/Chevrolet-Performance/809/12622033/10002/-1
Feeder you have heard bad review w the ls9???
Couple .100 thou bigger bore size also. Which probably be ok but not sure would prefer tighter bore clearence.
However heard best for boost.
http://www.jegs.com/i/Chevrolet-Performance/809/12589226/10002/-1
VS
http://www.jegs.com/i/Chevrolet-Performance/809/12622033/10002/-1
Feeder you have heard bad review w the ls9???
Last edited by 99redc5vette; Mar 11, 2018 at 12:03 AM.
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Thread Starter
Instructor
Joined: Jul 2013
Posts: 107
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Ya I am running 12psi give or take and see everyone loves the Ls9 for its durability to handle boost. GM MLS gasket you are reffering to the part#12589226?? I heard this gasket used in 10psi supercharged setups with no issues. I mean probably both be good but I want the best since I dont want to do this job anytime soon! Hoping some more people will give some more feedback from there personal experiences with these gaskets.
Drifting
Joined: Sep 2017
Posts: 1,957
Likes: 688
From: Avon Lake OH
Here are the head gaskets for the LS1/6 engines. Using a head gasket for the 4.000" or larger bore engines is not truly recommended on the smaller bore LS1/6 engines;
12498543 '97-01 graphite composite gasket LS1/LS6 3.905" bore, 0.052" compressed, 10.2cc volume
12498544 '02-04 MLS head gasket LS1/LS6 3.930" bore, 0.053" compressed, 10.5cc volume
C5475-051 Cometic MLS head gasket LS1/LS6 3.910" bore, 0.051" compressed, 10.03cc volume
C5475-040 Cometic MLS head gasket LS1/LS6 3.910" bore, 0.040" compressed, 7.9cc volume
12498543 '97-01 graphite composite gasket LS1/LS6 3.905" bore, 0.052" compressed, 10.2cc volume
12498544 '02-04 MLS head gasket LS1/LS6 3.930" bore, 0.053" compressed, 10.5cc volume
C5475-051 Cometic MLS head gasket LS1/LS6 3.910" bore, 0.051" compressed, 10.03cc volume
C5475-040 Cometic MLS head gasket LS1/LS6 3.910" bore, 0.040" compressed, 7.9cc volume
Last edited by JHrinsin; Mar 12, 2018 at 08:03 AM.
