Any difference between 01 and 02 LS6 heads ?
Burning Brakes
Joined: Aug 2002
Posts: 1,045
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From: KC, MO Missouri
Re: Any difference between 01 and 02 LS6 heads ? (vettenuts)
02 has saline filled exhauast valves and yellow springs. 01 has solid valves and blue springs. Double check that though :seeya
Thread Starter
Burning Brakes
Joined: Aug 2000
Posts: 873
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From: Albuquerque nm
Re: Any difference between 01 and 02 LS6 heads ? (Quick Brick)
So if I replace the valve componets with 02 spec I'm there ?
The reason being I will be going with a s/c in the next few months and need to swap my heads out for lower compr. I have heard the LS6 heads mate up well with the s/c..........
Thanks guys.......... :cheers:
Tripp
Burning Brakes
Joined: Aug 2002
Posts: 1,045
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From: KC, MO Missouri
Re: Any difference between 01 and 02 LS6 heads ? (evil-1)
Sodium/saline just details :D Anyway, :nono: on the ls6 and SC! They are too high compression. I was looking at getting some 6L truck heads worked they drop your CR .7 over LS1 that would let you run about 2 more lbs boost safely. Look into 6L truck heads best bang for the buck IMO. :seeya
[Modified by Quick Brick, 10:10 AM 10/16/2002]
[Modified by Quick Brick, 10:10 AM 10/16/2002]
Drifting
Joined: Oct 1999
Posts: 1,272
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From: Gaithersburg MD
Cruise-In II Veteran
Cruise-In III Veteran
Re: Any difference between 01 and 02 LS6 heads ? (Quick Brick)
Check out the National Corvette Museum Website. There is a write up on the 02 Z06 heads.
You might check the Idaho Corvette Website, too. Lot's of info on the differences (heads & cam).
Links are on the left or one the Forum home page.
You might check the Idaho Corvette Website, too. Lot's of info on the differences (heads & cam).
Links are on the left or one the Forum home page.
Drifting
Joined: May 2002
Posts: 1,607
Likes: 1
From: San Francisco CA
Re: Any difference between 01 and 02 LS6 heads ? (evil-1)
Here is a set of bare LS6 heads that are CNC ported with 70cc chambers. http://www.sdpc2000.com/cart.asp?act...1979&pid=90938
Stock LS6 heads are 67cc. I believe stock LS1 is smaller than 70cc as well. $1590 and no core seems like a dynamite price :yesnod:
Stock LS6 heads are 67cc. I believe stock LS1 is smaller than 70cc as well. $1590 and no core seems like a dynamite price :yesnod:
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Drifting
Joined: Aug 2000
Posts: 1,835
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From: NY
Re: Any difference between 01 and 02 LS6 heads ? (Quick Brick)
Sodium/saline just details :D Anyway, :nono: on the ls6 and SC! They are too high compression. I was looking at getting some 6L truck heads worked they drop your CR .7 over LS1 that would let you run about 2 more lbs boost safely. Look into 6L truck heads best bang for the buck IMO. :seeya
[Modified by Quick Brick, 10:10 AM 10/16/2002]
[Modified by Quick Brick, 10:10 AM 10/16/2002]
plus the 6.0 heads flow just as well if not better than the ls6 heads. :seeya
Burning Brakes
Joined: Jun 2002
Posts: 1,037
Likes: 31
From: Richmond Texas
Re: Any difference between 01 and 02 LS6 heads ? (Moundir)
But aren't the truck heads iron? Or are they aluminum? Don't keep up to much with gas engines. Spark Plugs are for Sissies!! :D
Le Mans Master
Joined: Jul 2000
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From: Fort Worth Texas
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Re: Any difference between 01 and 02 LS6 heads ? (BigBlue)
But aren't the truck heads iron? Or are they aluminum? Don't keep up to much with gas engines. Spark Plugs are for Sissies!! :D
You want the LQ9 post 2000 6.0 Liter Alumunim heads that share the same characterisics as the LS6 heads. The bennefit is the larger combustion chambers for forced induction and such.
2001, 2002, 2003 LS6 Head castings are identical.
Safety Car
Joined: Mar 2002
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St. Jude Donor '09
Re: Any difference between 01 and 02 LS6 heads ? (evil-1)
I believe the '02 valve stems are shorter than '01. Shorter stems are compensated by longer pushrods. So if you use the '02 valves you need to swich to '02 pushrods. :cheers:
Melting Slicks
Joined: Mar 2001
Posts: 2,372
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From: New Milford CT
Re: Any difference between 01 and 02 LS6 heads ? (binksZ06)
Actually, the 2002/2003 LS6 valve stems are Longer than 2001 LS6 or LS1 valve stems. This extra length is needed because the base circle on the 2002/2003 cam is smaller by an equal amount.
These 2002 parts can be used with 2001 parts and will still work fine, because the hydraulic lifter can adjust for the small differences in sizes.
Only thing when mixing is that the rocker arm to valve stem contact postition is less than perfect, but still works just fine.
Pushrod length is the same on all of these engines.
These 2002 parts can be used with 2001 parts and will still work fine, because the hydraulic lifter can adjust for the small differences in sizes.
Only thing when mixing is that the rocker arm to valve stem contact postition is less than perfect, but still works just fine.
Pushrod length is the same on all of these engines.
Thread Starter
Burning Brakes
Joined: Aug 2000
Posts: 873
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From: Albuquerque nm
Re: Any difference between 01 and 02 LS6 heads ? (CJS)
..... :yesnod: I'm looking for the best head castings ONLY for a s/c setup.
If I go with the LS6 heads I'll use my present valve train setup.
Thanks....... :cheers:
Thread Starter
Burning Brakes
Joined: Aug 2000
Posts: 873
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From: Albuquerque nm
Re: Any difference between 01 and 02 LS6 heads ? (z0sense)
For a s/c setup I would definately go with the 6.0L heads as they have a lower compression ratio.
With dual intercooling and keeping under 8psi I thought in the 10.2 - 10.8:1 range was very safe.
What's the compr of the 6L trruck heads?
Drifting
Joined: Jul 2002
Posts: 1,320
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From: Duncanville Texas
Re: Any difference between 01 and 02 LS6 heads ? (evil-1)
The 6.0L head has 9.5:1 compression.
With dish pistons, thicker gasket, etc......you may even get below 9:1
BTW,
There are 2 types of 6.0L heads
LQ9 = aluminum
LQ4 = iron
Hope this helps!
With dish pistons, thicker gasket, etc......you may even get below 9:1
BTW,
There are 2 types of 6.0L heads
LQ9 = aluminum
LQ4 = iron
Hope this helps!
Drifting
Joined: Jul 2002
Posts: 1,320
Likes: 0
From: Duncanville Texas
Re: Any difference between 01 and 02 LS6 heads ? (evil-1)
Do you have a built motor?
Seems that 8 psi is a whole lotta boost on a ls1/6 motor. Lots of people have problems lifting the heads off the block. :cry
Seems that 8 psi is a whole lotta boost on a ls1/6 motor. Lots of people have problems lifting the heads off the block. :cry