LS1 Gasket/Seal Kit
Thread Starter
Teching In
Joined: Jan 2026
Posts: 11
Likes: 1
From: Australia
LS1 Gasket/Seal Kit Hey everyone,
I知 planning a bit of a freshen-up on my LS1 soon. While the engine is out, I値l be replacing the oil pump, timing chain, cam, and doing a full valve train upgrade.
Since everything will already be apart, I知 looking at getting a gasket/seal kit to tidy up and reseal the engine while I知 there. I致e come across kits from Proflow, Permaseal, MACE, etc., but I知 interested to hear what others have used and had good results with.
Just wondering what gasket kits people recommend, and if there are any other things worth replacing or upgrading while doing this work.
Thanks in advance!
note: I'm also Australia based if that plays a role in any guidance
I知 planning a bit of a freshen-up on my LS1 soon. While the engine is out, I値l be replacing the oil pump, timing chain, cam, and doing a full valve train upgrade.
Since everything will already be apart, I知 looking at getting a gasket/seal kit to tidy up and reseal the engine while I知 there. I致e come across kits from Proflow, Permaseal, MACE, etc., but I知 interested to hear what others have used and had good results with.
Just wondering what gasket kits people recommend, and if there are any other things worth replacing or upgrading while doing this work.
Thanks in advance!
note: I'm also Australia based if that plays a role in any guidance
On The Tree
Joined: Sep 2009
Posts: 113
Likes: 59
From: Akron, OH
Cometic sells top and bottom gasket kits. Takes all the guess work out of whats needed! They have multiple kits with different head gasket options.
https://www.cometic.com/products/PRO1036B
https://www.cometic.com/products/PRO1007T-3910
https://www.cometic.com/products/PRO1036B
https://www.cometic.com/products/PRO1007T-3910
TECH Addict
Joined: Dec 2017
Posts: 2,181
Likes: 970
This is a little like asking "what oil should I use?" A million people will tell you all about "I only use this" or "I've got that and don't have problems" or whatever. Mostly fanboy crap and other drivel.
For a typical street-driven (non racing) "refresh", any quality set will do fine. It's just not the sort of thing that really matters. Besides GM themselves, there are FelPro, Mahle, Victor Reinz, etc., to name ones we can get here in the States, that are equivalent to OEM (or ARE OEM, just, GM re-packages them in their own box). There are no doubt others available elsewhere as well; for example any mfr making gaskets of OEM quality for European or Japanese cars would likely work just as well. I don't know any of the brands you listed but if they're the sort of thing people buy at the corner parts store and get good results with I wouldn't hesitate to use them.
As far as other things, I'd suggest new knock sensors and their harness.
For a typical street-driven (non racing) "refresh", any quality set will do fine. It's just not the sort of thing that really matters. Besides GM themselves, there are FelPro, Mahle, Victor Reinz, etc., to name ones we can get here in the States, that are equivalent to OEM (or ARE OEM, just, GM re-packages them in their own box). There are no doubt others available elsewhere as well; for example any mfr making gaskets of OEM quality for European or Japanese cars would likely work just as well. I don't know any of the brands you listed but if they're the sort of thing people buy at the corner parts store and get good results with I wouldn't hesitate to use them.
As far as other things, I'd suggest new knock sensors and their harness.
TECH Fanatic
Joined: Sep 2008
Posts: 1,645
Likes: 526
Not sure what parts stores are in the "Land down under" but here in the states I just go to the local NAPA or Oreily's for gaskets.
Just make sure you have the o-rings seated properly.
Also a bit of RTV where the oil pan meets the front cover.
For centering the front cover on the crank I took a junk crank pulley and honed out the inside just a bit with a brake hone so the junk pulley will just slide over the crank.
With the front cover along with the new seal installed it centers the front cover on the crank.
Just make sure you have the o-rings seated properly.
Also a bit of RTV where the oil pan meets the front cover.
For centering the front cover on the crank I took a junk crank pulley and honed out the inside just a bit with a brake hone so the junk pulley will just slide over the crank.
With the front cover along with the new seal installed it centers the front cover on the crank.
TECH Resident
Joined: Mar 2012
Posts: 859
Likes: 402
From: Texas
Hey everyone,
I知 planning a bit of a freshen-up on my LS1 soon. While the engine is out, I値l be replacing the oil pump, timing chain, cam, and doing a full valve train upgrade.
Since everything will already be apart, I知 looking at getting a gasket/seal kit to tidy up and reseal the engine while I知 there. I致e come across kits from Proflow, Permaseal, MACE, etc., but I知 interested to hear what others have used and had good results with.
Just wondering what gasket kits people recommend, and if there are any other things worth replacing or upgrading while doing this work.
Thanks in advance!
note: I'm also Australia based if that plays a role in any guidance
I知 planning a bit of a freshen-up on my LS1 soon. While the engine is out, I値l be replacing the oil pump, timing chain, cam, and doing a full valve train upgrade.
Since everything will already be apart, I知 looking at getting a gasket/seal kit to tidy up and reseal the engine while I知 there. I致e come across kits from Proflow, Permaseal, MACE, etc., but I知 interested to hear what others have used and had good results with.
Just wondering what gasket kits people recommend, and if there are any other things worth replacing or upgrading while doing this work.
Thanks in advance!
note: I'm also Australia based if that plays a role in any guidance
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Thread Starter
Teching In
Joined: Jan 2026
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From: Australia
But to name a few, we have things like Repco, Supercheap Auto, Autobarn, and Bursons as our big 4 walk in shops
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