Cams: 2000 vs 2001-04
Thread Starter
Drifting
Joined: Jul 2004
Posts: 1,446
Likes: 1
From: San Angelo TX
Cams: 2000 vs 2001-04
Does anyone know why the 2000 LS1 was down on torque compared to the 01-04s? I know that the 01+ got the LS6 intake and the 241 heads instead of the 853s. However, looking at the cam specs (below), it would seem to me the 2000s would be a better starting place for a stock cammed car.
00 LS1 .500/.500 lift, 209/198 duration, 115.5 LSA
Rated 350 HP, 350 ft-lbs
01-04 LS1 .479/.467 lift, 207/196 duration, 116 LSA
Rated 350 HP, 375 ft-lbs
The reason for asking is that I am looking at getting a coupe to run time trials with NASA and I am wondering if one cam would make a better track car than the other (rules limited on mods). Would the 2000 cam be better at high RPM and/or respond better to headers/CAI/tune/etc? TIA
00 LS1 .500/.500 lift, 209/198 duration, 115.5 LSA
Rated 350 HP, 350 ft-lbs
01-04 LS1 .479/.467 lift, 207/196 duration, 116 LSA
Rated 350 HP, 375 ft-lbs
The reason for asking is that I am looking at getting a coupe to run time trials with NASA and I am wondering if one cam would make a better track car than the other (rules limited on mods). Would the 2000 cam be better at high RPM and/or respond better to headers/CAI/tune/etc? TIA
Team Owner
Joined: May 1999
Posts: 22,830
Likes: 13
From: Columbus Ohio
CI 3-4, 8-9-10 Veteran
St. Jude Donor '06-'08-'10
The "change list" I have for 2001 shows:
LS1 cam profile changed to: .500/0.500, 198/208 on 115.5LSA (From: 0.472/0.479, 202/210 on 117)
LS1 cam profile changed to: .500/0.500, 198/208 on 115.5LSA (From: 0.472/0.479, 202/210 on 117)
Thread Starter
Drifting
Joined: Jul 2004
Posts: 1,446
Likes: 1
From: San Angelo TX
Looks like I my info on the 97-99 cars is flipped from yours. Here is the whole list, originally posted here: http://forums.corvetteforum.com/1575738044-post85.html
C5 camshafts:
'97-'99 LS1 .479/.472 lift, 207/199 duration, 117 LSA
Rated 345 HP, 350 ft-lbs
'00 LS1 .500/.500 lift, 209/198 duration, 115.5 LSA
Rated 350 HP, 350 ft-lbs
'01-04 LS1 .479/.467 lift, 207/196 duration, 116 LSA
Rated 350 HP, 375 ft-lbs
'01 LS6 .525/.525 lift, 211/204 duration, 116 LSA
Rated 385 HP, 385 ft-lbs
'02-04 LS6 .551/.555 lift, 218/204 duration, 117.5 LSA
Rated 405 HP, 400 ft-lbs
C5 camshafts:
'97-'99 LS1 .479/.472 lift, 207/199 duration, 117 LSA
Rated 345 HP, 350 ft-lbs
'00 LS1 .500/.500 lift, 209/198 duration, 115.5 LSA
Rated 350 HP, 350 ft-lbs
'01-04 LS1 .479/.467 lift, 207/196 duration, 116 LSA
Rated 350 HP, 375 ft-lbs
'01 LS6 .525/.525 lift, 211/204 duration, 116 LSA
Rated 385 HP, 385 ft-lbs
'02-04 LS6 .551/.555 lift, 218/204 duration, 117.5 LSA
Rated 405 HP, 400 ft-lbs
Burning Brakes
Joined: Oct 2004
Posts: 931
Likes: 35
From: Rowlett, Texas
Nope, the '00 was the only C5 year to get the higher .500 lift.
This was done to offset the pre-cats that were added to the exhaust on the California cars in 2000. The 49-state cars did not get the pre-cats, but did get the cam.
As a result, the 2000 49-state car was still rated at 345 HP/350 TQ, but was actually about 10 HP/TQ stronger than the typical '97-'99.
I saw this many times at dyno days back in the '00 timeframe.
In '01 there were several changes made, most of which improved TQ, but not HP, over the '00. The '01 was rated 350HP/375TQ.
- Somewhat more open air cleaner.
- Larger MAF.
- LS6 intake manifold.
- LS6 cast exhaust manifolds.
- slightly improved heads.
- back to a slightly smaller cam.
- pre-cats om all models.
So, all things considered, the '00 cam is the strongest, and definitely the one to use in a spec series race. I sold mine last spring to a guy who was building an engine for similar requirements.
DG
This was done to offset the pre-cats that were added to the exhaust on the California cars in 2000. The 49-state cars did not get the pre-cats, but did get the cam.
As a result, the 2000 49-state car was still rated at 345 HP/350 TQ, but was actually about 10 HP/TQ stronger than the typical '97-'99.
I saw this many times at dyno days back in the '00 timeframe.
In '01 there were several changes made, most of which improved TQ, but not HP, over the '00. The '01 was rated 350HP/375TQ.
- Somewhat more open air cleaner.
- Larger MAF.
- LS6 intake manifold.
- LS6 cast exhaust manifolds.
- slightly improved heads.
- back to a slightly smaller cam.
- pre-cats om all models.
So, all things considered, the '00 cam is the strongest, and definitely the one to use in a spec series race. I sold mine last spring to a guy who was building an engine for similar requirements.
DG
Thread Starter
Drifting
Joined: Jul 2004
Posts: 1,446
Likes: 1
From: San Angelo TX
Nope, the '00 was the only C5 year to get the higher .500 lift.
This was done to offset the pre-cats that were added to the exhaust on the California cars in 2000. The 49-state cars did not get the pre-cats, but did get the cam.
As a result, the 2000 49-state car was still rated at 345 HP/350 TQ, but was actually about 10 HP/TQ stronger than the typical '97-'99.
I saw this many times at dyno days back in the '00 timeframe.
In '01 there were several changes made, most of which improved TQ, but not HP, over the '00. The '01 was rated 350HP/375TQ.
- Somewhat more open air cleaner.
- Larger MAF.
- LS6 intake manifold.
- LS6 cast exhaust manifolds.
- slightly improved heads.
- back to a slightly smaller cam.
- pre-cats om all models.
So, all things considered, the '00 cam is the strongest, and definitely the one to use in a spec series race. I sold mine last spring to a guy who was building an engine for similar requirements.
DG
This was done to offset the pre-cats that were added to the exhaust on the California cars in 2000. The 49-state cars did not get the pre-cats, but did get the cam.
As a result, the 2000 49-state car was still rated at 345 HP/350 TQ, but was actually about 10 HP/TQ stronger than the typical '97-'99.
I saw this many times at dyno days back in the '00 timeframe.
In '01 there were several changes made, most of which improved TQ, but not HP, over the '00. The '01 was rated 350HP/375TQ.
- Somewhat more open air cleaner.
- Larger MAF.
- LS6 intake manifold.
- LS6 cast exhaust manifolds.
- slightly improved heads.
- back to a slightly smaller cam.
- pre-cats om all models.
So, all things considered, the '00 cam is the strongest, and definitely the one to use in a spec series race. I sold mine last spring to a guy who was building an engine for similar requirements.
DG
There is no torque restriction in the class currently so if the 01-04 with those mods would be way up on torque, that is probably worth it for the potential small hit to power.
Burning Brakes
Joined: Mar 2010
Posts: 1,189
Likes: 4
From: Freeport, FL
The 01-up LS1 uses the LS6 block and intake. The block has better internal breathing, is capable of servicing (can be bored .01" over), stronger, better PCV system (if equipped with valley tray), etc. The intake of course is much better. I believe the pistons were a better design by Mahle. Anywho, the 01-up is better, but I don't know the rules that bind you, so I can't really say what's best for your application.
The cam of the 00 sounds to be the better of the choices, but it really just a choice of 6 one, half dozen the other.
Dunno, but if all this is to determine the year of car, I'd say get an 01, but if you only are deciding on which year motor, well, I'd still say the 01. You can make more power than the other guy by maximizing other factors than just having a bigger cam.
The cam of the 00 sounds to be the better of the choices, but it really just a choice of 6 one, half dozen the other.
Dunno, but if all this is to determine the year of car, I'd say get an 01, but if you only are deciding on which year motor, well, I'd still say the 01. You can make more power than the other guy by maximizing other factors than just having a bigger cam.
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Verdad Gallardo
Melting Slicks
Joined: Sep 2006
Posts: 2,736
Likes: 7
From: Redding CA
Nope, the '00 was the only C5 year to get the higher .500 lift.
This was done to offset the pre-cats that were added to the exhaust on the California cars in 2000. The 49-state cars did not get the pre-cats, but did get the cam.
As a result, the 2000 49-state car was still rated at 345 HP/350 TQ, but was actually about 10 HP/TQ stronger than the typical '97-'99.
I saw this many times at dyno days back in the '00 timeframe.
In '01 there were several changes made, most of which improved TQ, but not HP, over the '00. The '01 was rated 350HP/375TQ.
- Somewhat more open air cleaner.
- Larger MAF.
- LS6 intake manifold.
- LS6 cast exhaust manifolds.
- slightly improved heads.
- back to a slightly smaller cam.
- pre-cats om all models.
So, all things considered, the '00 cam is the strongest, and definitely the one to use in a spec series race. I sold mine last spring to a guy who was building an engine for similar requirements.
DG
This was done to offset the pre-cats that were added to the exhaust on the California cars in 2000. The 49-state cars did not get the pre-cats, but did get the cam.
As a result, the 2000 49-state car was still rated at 345 HP/350 TQ, but was actually about 10 HP/TQ stronger than the typical '97-'99.
I saw this many times at dyno days back in the '00 timeframe.
In '01 there were several changes made, most of which improved TQ, but not HP, over the '00. The '01 was rated 350HP/375TQ.
- Somewhat more open air cleaner.
- Larger MAF.
- LS6 intake manifold.
- LS6 cast exhaust manifolds.
- slightly improved heads.
- back to a slightly smaller cam.
- pre-cats om all models.
So, all things considered, the '00 cam is the strongest, and definitely the one to use in a spec series race. I sold mine last spring to a guy who was building an engine for similar requirements.
DG
Thank you for the correction.
