head gasket size
09-08-2005, 08:02 AM
#1
head gasket size whats the differance between the years? does it matter
12498543 1997-2001 LS1 / LS6 Head Gasket Kit
12498544 2002 and Newer LS1 / LS6 Head Gasket Kit
I got a set of AFR 205s for my 2000, but they sent the 12498544 part number and I was wondering if it will work on my Y2K?
is the part number 12498544 the .051, .058, or 060 thickness
thanks
12498543 1997-2001 LS1 / LS6 Head Gasket Kit
12498544 2002 and Newer LS1 / LS6 Head Gasket Kit
I got a set of AFR 205s for my 2000, but they sent the 12498544 part number and I was wondering if it will work on my Y2K?
is the part number 12498544 the .051, .058, or 060 thickness
thanks
09-08-2005, 08:41 AM
#2
Looks like you were sent the thick (.060") GM MLS gaskets. While they're an improvement over the graphite gaskets used in previous years, you'll give up quench and power potential compared to running .045" Cometic gaskets.
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
09-08-2005, 10:16 AM
#4
TECH Veteran
Yes they will work. The MLS are better but also thicker. but it shouldnt be enough to cause a noticeable power difference. On the head gasket changes ive done i cant say i have ever seen a power decrease afterwords.
09-08-2005, 09:52 PM
#7
TECH Fanatic
iTrader: (1)
Join Date: Jun 2003
Location: Mount Dora, Fla
Posts: 1,876
Likes: 0
Received 0 Likes
on
0 Posts
If the gaskets are MLS multi layered steel then they are .060. If they are graphite then they are .053. Gasket thickness changes compression slightly, but moreso affects quench. Quench optimally should be .035-.040. Cometics .045 though expensive would easy give you 10+ hp over the .060.
Trending Topics
09-09-2005, 08:10 AM
#9
TECH Fanatic
iTrader: (1)
Join Date: Jun 2003
Location: Mount Dora, Fla
Posts: 1,876
Likes: 0
Received 0 Likes
on
0 Posts
Do a search , I think it's an easy 10+ hp. At the very least run the graphite OEM's at .053. Thats what I'm using , I'm still mad at myself because I didn't want to wait 6-8 weeks for the .045 Cometics, but my car had already been down for 2 months already. Next time my heads come off it will be Cometics even if they are a rip off.
