What Valve Stem Seal LS6
Thread Starter
Drifting
Joined: Jun 2005
Posts: 1,681
Likes: 2
From: Seven Devils NC
What Valve Stem Seal LS6
I am about to order a new set of Valve Stem Seals for my 2002 Z06 ... She has a G5X2 equivalent cam and double springs on a otherwise stock motor.... COMP cams has 2 types of seals Umbrella type and O-Ring type..... Any Idea which one I should order?
http://store.summitracing.com/partde...art=cca-502-16
http://store.summitracing.com/partde...art=cca-501-16
http://store.summitracing.com/partde...art=cca-502-16
http://store.summitracing.com/partde...art=cca-501-16
Tech Contributor
Joined: Jan 2007
Posts: 19,401
Likes: 1,144
From: Dyer, IN
I am about to order a new set of Valve Stem Seals for my 2002 Z06 ... She has a G5X2 equivalent cam and double springs on a otherwise stock motor.... COMP cams has 2 types of seals Umbrella type and O-Ring type..... Any Idea which one I should order?
http://store.summitracing.com/partde...art=cca-502-16
http://store.summitracing.com/partde...art=cca-501-16
http://store.summitracing.com/partde...art=cca-502-16
http://store.summitracing.com/partde...art=cca-501-16
I used positive stop type.
Tech Contributor
Joined: Jan 2007
Posts: 19,401
Likes: 1,144
From: Dyer, IN
Thread Starter
Drifting
Joined: Jun 2005
Posts: 1,681
Likes: 2
From: Seven Devils NC
ok
http://www.compcams.com/Products/296-320.PDF
Racer
Joined: Jan 2006
Posts: 415
Likes: 1
From: Ft. Wayne In
I've used several types of seals & had the best luck with the GM seal,in the link in Lucky's post.
I use the exhaust seal on all sixteen stems.
Thread Starter
Drifting
Joined: Jun 2005
Posts: 1,681
Likes: 2
From: Seven Devils NC
Ok...... still not sure what way to go .... Any one used the comp cams one set?
Since i have double valve springs does it make a difference if i use stock ones?
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Tech Contributor
Joined: Jan 2007
Posts: 19,401
Likes: 1,144
From: Dyer, IN
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
They are not 11/32 valves, they are 8 mm. If you are going with a beehive spring, the stock one piece GM seal/seat is fine. If you are going with duals, get the older GM seal design which is an umbrella type that uses a separate seat.
Pro
Joined: Jul 2000
Posts: 590
Likes: 1
From: Suffolk New York
Why? Shouldn't use Umbrella with Duals, Umbrella may come into contact with the inner spring and eventually fail.
Thread Starter
Drifting
Joined: Jun 2005
Posts: 1,681
Likes: 2
From: Seven Devils NC
:)
So I called the dealer ... they have 8 intake and 8 exhaust in stock..... I should only get the Exhaust because the Intake ones are Umbrella?
Pro
Joined: Jul 2000
Posts: 590
Likes: 1
From: Suffolk New York
They are all Positive Seal, no Umbrella.
You can use 8 Exh and 8 Intake Positive Seals, but if you wanted to be more conservative, you can also use exhaust seals on the Intake valves, too. Your choice.
You can use 8 Exh and 8 Intake Positive Seals, but if you wanted to be more conservative, you can also use exhaust seals on the Intake valves, too. Your choice.
