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Thread: MLS Head Gasket Woes
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06-22-2008, 08:54 AM #1
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Artic White- 2001 Chevy Camaro SS
MLS Head Gasket Woes
I'm in the process of getting my heads machined because one is warped (badly installed head bolts) anywho, I was looking to buy MLS head gaskets this time around. My first question, my internals are stock so what bore do I get a 3.905" or a 3.910"? Also, I know about the thickness raises and lowers compression, what thickness should I go with? My mods are MS4, PP heads, PP TB, and all free mods... Thanks in advance.
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06-22-2008, 09:30 AM #2
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Red Tint Jewelcoat- 2008 Trailblazer SS
Stock head gaskets are MLS.
What compression are you at now? Since the heads were off for the port...what gasket was on there?2008 Trailblazer SS
Yank PTB3600, Kooks 1 7/8" LT's, 4" intake, E-fans, Magnaflow, Sonnax kit, tranny cooler, tune.
Lowered, HID's, tinted.
1999 Pontiac Trans Am WS.6 #1747 SOLD
531.1 RWHP 481.3 FT/Pounds all motor.
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06-22-2008, 12:08 PM #3
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06-22-2008, 12:31 PM #4
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Red Tint Jewelcoat- 2008 Trailblazer SS
.054" cometics then will maintain stock compression.
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06-22-2008, 12:39 PM #5
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Artic White- 2001 Chevy Camaro SS
Thanks for the help. Also, what bore size should I run on the cosmetic gasket 3.910 or 3.905? Or does it really matter?...
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06-22-2008, 12:42 PM #6
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Red Tint Jewelcoat- 2008 Trailblazer SS
3.905 is what I would run.
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06-22-2008, 12:49 PM #7
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Artic White- 2001 Chevy Camaro SS
Mr. Luos !!!! Thanks for the help.
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07-11-2008, 11:37 AM #8
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Artic White- 2001 Chevy Camaro SS
Hi guys, sorry to bring this thread back from the dead. I just remembered that when I installed the heads I used the stock graphite gaskets for 1998-2001 ls1's. I was wondering if the stock MLS gaskets for 2002 ls1's would solve my problem, or should I still go cosmetic? I feel stupid for not mentioning this earlier.
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07-13-2008, 10:57 AM #9
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Mag Red- 2002 Vette
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07-13-2008, 11:04 AM #10
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Red Tint Jewelcoat- 2008 Trailblazer SS
GM put a graphite head gasket on these cars?
My stock head gaskets were MLS on my 1999.
Pick up some MLS gaskets from the stealership. Stock size.
Stock GM MLS LS1 head gaskets compress to .054"
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07-13-2008, 12:43 PM #11
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Artic White- 2001 Chevy Camaro SS
Thanks again Mr. Luos!
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07-14-2008, 05:29 PM #12Cold Air Intake, Muffler Delete, Vinci High Performance Dual Valve Springs, Hardened Pushrods, Yella Terra 1.85 Rockers, Some Hydropdipped Stuff, Strut Tower Brace, Some SS Badges, boost/vacuum gauge, fuel pressure gauge, some checkered stripes, drilled/slotted rotors, ZL1addons Stealth wickerbill, Ruxifey LED side markers
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07-14-2008, 05:37 PM #13
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Red Tint Jewelcoat- 2008 Trailblazer SS
You know what...now that you say that...
I honestly can't remember.
I think you might be right. Damn...been 3 years since I took that bastard out.
They were....I remember cleaning the shit off the heads now.
I hate when I give out bad info. I recalled removing the heads after claying to check clearance...but those were cometics.
Stock replacement is MLS now though isn't?? From GM?
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07-15-2008, 05:54 AM #14
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BLK/BLK w/CGM Stripes- 2010 Camaro 2SS/M6
Depends on the head you use. Some of the heads, don't remember which casting number, have a little notch on the outside below the exhaust ports in the sealing surface. If you use those heads with a MLS gasket, they will most probably leak; use of a graphite gasket it a must with them. For all other heads, a MLS setup works.
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07-16-2008, 05:33 AM #15
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07-16-2008, 07:11 AM #16
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BLK/BLK w/CGM Stripes- 2010 Camaro 2SS/M6
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07-16-2008, 07:46 PM #17
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07-16-2008, 07:50 PM #18
the head casting i know for sure that are centerbolt valve cover as 862 (4.8/5.3L) and 853 (5.7L). even then it was random. i've seen 853 without the notches. and yes, if you use a MLS with the notched head, it will leak. been there, tried it and watched the water pour out of the notch area while i was filling teh radiator.
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07-17-2008, 02:12 AM #19
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Mag Red- 2002 Vette
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07-17-2008, 06:27 AM #20
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