Picked up LS9 Head Gaskets - Pics and info inside
Thread Starter
Joined: Jun 2006
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From: Orange County, CA
Picked up LS9 Head Gaskets - Pics and info inside So I just picked up some LS9 gaskets, and there seems to be a lot of confusion on the exact specs.
im not sure if this is the correct way to check thickness on the gasket, but squeezing the dial calipers a little bit showed 0.052 - 0.053 ish thickness, depending on how hard i squeezed, and 0.048 right next to the rivet.
bore size is 4.100
7 layers, 4 "active" and 3 "inactive layers"
these fit on my 4.010 bore, and went over my ARP studs just fine. the gasket fit PERFECTLY around the dowels with no extra play.
if anyone needs more info, let me know
im not sure if this is the correct way to check thickness on the gasket, but squeezing the dial calipers a little bit showed 0.052 - 0.053 ish thickness, depending on how hard i squeezed, and 0.048 right next to the rivet.
bore size is 4.100
7 layers, 4 "active" and 3 "inactive layers"
these fit on my 4.010 bore, and went over my ARP studs just fine. the gasket fit PERFECTLY around the dowels with no extra play.
if anyone needs more info, let me know
Last edited by KILLER-LS1; Jan 11, 2010 at 11:18 PM.
Thread Starter
Joined: Jun 2006
Posts: 1,460
Likes: 7
From: Orange County, CA
I just ordered them from my local dealership, tustin chevrolet. obviously they were a special order and came straight from detriot 
im an ex GM technician, so i get a good deal on parts, but i paid $80 for the set. id guess you'd spend about $100-120 ish at full price, but who knows, call up a dealer and see what they quote you...
im an ex GM technician, so i get a good deal on parts, but i paid $80 for the set. id guess you'd spend about $100-120 ish at full price, but who knows, call up a dealer and see what they quote you...
Thread Starter
Joined: Jun 2006
Posts: 1,460
Likes: 7
From: Orange County, CA
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Joined: Jun 2006
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From: Orange County, CA
the difference is:
stock 6.0 gasket is a 3 layer,
escalade 6.2 gaskets are a 5 layer,
LS9 (ZR1 corvette) are a 7 layer.
what i like the most is that GM Performance Parts lists them for "forced induction applications" if you look up any other gasket, it says "for naturally aspirated engines only"
stock 6.0 gasket is a 3 layer,
escalade 6.2 gaskets are a 5 layer,
LS9 (ZR1 corvette) are a 7 layer.
what i like the most is that GM Performance Parts lists them for "forced induction applications" if you look up any other gasket, it says "for naturally aspirated engines only"
I just ordered them from my local dealership, tustin chevrolet. obviously they were a special order and came straight from detriot
im an ex GM technician, so i get a good deal on parts, but i paid $80 for the set. id guess you'd spend about $100-120 ish at full price, but who knows, call up a dealer and see what they quote you...
im an ex GM technician, so i get a good deal on parts, but i paid $80 for the set. id guess you'd spend about $100-120 ish at full price, but who knows, call up a dealer and see what they quote you...
Thread Starter
Joined: Jun 2006
Posts: 1,460
Likes: 7
From: Orange County, CA
however it is apx the same thickness as the other gaskets because each layer is thinner, allowing for more layers to be the same thickness as the other gaskets
Thread Starter
Joined: Jun 2006
Posts: 1,460
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From: Orange County, CA
That's good the know. I was hoping that they were a little thicker than the 6.0 gasket to help drop compression a little bit.
Thread Starter
Joined: Jun 2006
Posts: 1,460
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From: Orange County, CA
Can anybody confirm that the LS9 and LSA use the same head gasket part number? or does the CTS-V use a different gasket. If they are different part numbers their may be another option while the LS9 are out of stock
Thread Starter
Joined: Jun 2006
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From: Orange County, CA
out of stock, and not a stocking item are different. they ARE in stock, but only in the warehouses. it shouldnt take more than a few days to get a set.
well, just an FYI, but there are alot of cadillac dealers with these in stock for the CTS-V. I just called up a dealer and they directed me to a dealer about 40 minutes away with a set in stock. Ill be grabbing them tonight