Ls6 Camshaft Specs
Exact specs:
02+ Z06 camshaft 0.006 0.050 0.200
Intake Duration - ID 270 204 125 02 LS6 intake
Exhaust Duration - ED 277 218 135 02 LS6 exhaust
Lobe Center Angle - LSA 117.5 117.5 117.5
Intake Centerline - ICL 120 120 120
Intake Valve opens - IVO 15 -18 -57.5 BTDC
Intake Valve closes - IVC 75 42 2.5 ABDC
Exhaust Valve Opens - EVO 73.5 44 2.5 BBDC
Exhaust Valve Closes - EVC 23.5 -6 -47.5 ATDC
Exhaust Centerline - ECL 115 115 115
Overlap 38.5 -24 -105 degrees
Notice that the cam is retarded -2.5 degrees. The ICL is actually 120. This is one of the big reasons why the '02+ LS6 cam will rev so well with such small intake duration. An intake valve closing point of 42 degrees works very well.
02+ Z06 camshaft 0.006 0.050 0.200
Intake Duration - ID 270 204 125 02 LS6 intake
Exhaust Duration - ED 277 218 135 02 LS6 exhaust
Lobe Center Angle - LSA 117.5 117.5 117.5
Intake Centerline - ICL 120 120 120
Intake Valve opens - IVO 15 -18 -57.5 BTDC
Intake Valve closes - IVC 75 42 2.5 ABDC
Exhaust Valve Opens - EVO 73.5 44 2.5 BBDC
Exhaust Valve Closes - EVC 23.5 -6 -47.5 ATDC
Exhaust Centerline - ECL 115 115 115
Overlap 38.5 -24 -105 degrees
Notice that the cam is retarded -2.5 degrees. The ICL is actually 120. This is one of the big reasons why the '02+ LS6 cam will rev so well with such small intake duration. An intake valve closing point of 42 degrees works very well.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
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2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
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Originally Posted by Patrick G
Exact specs:
02+ Z06 camshaft 0.006 0.050 0.200
Intake Duration - ID 270 204 125 02 LS6 intake
Exhaust Duration - ED 277 218 135 02 LS6 exhaust
Lobe Center Angle - LSA 117.5 117.5 117.5
Intake Centerline - ICL 120 120 120
Intake Valve opens - IVO 15 -18 -57.5 BTDC
Intake Valve closes - IVC 75 42 2.5 ABDC
Exhaust Valve Opens - EVO 73.5 44 2.5 BBDC
Exhaust Valve Closes - EVC 23.5 -6 -47.5 ATDC
Exhaust Centerline - ECL 115 115 115
Overlap 38.5 -24 -105 degrees
Notice that the cam is retarded -2.5 degrees. The ICL is actually 120. This is one of the big reasons why the '02+ LS6 cam will rev so well with such small intake duration. An intake valve closing point of 42 degrees works very well.
02+ Z06 camshaft 0.006 0.050 0.200
Intake Duration - ID 270 204 125 02 LS6 intake
Exhaust Duration - ED 277 218 135 02 LS6 exhaust
Lobe Center Angle - LSA 117.5 117.5 117.5
Intake Centerline - ICL 120 120 120
Intake Valve opens - IVO 15 -18 -57.5 BTDC
Intake Valve closes - IVC 75 42 2.5 ABDC
Exhaust Valve Opens - EVO 73.5 44 2.5 BBDC
Exhaust Valve Closes - EVC 23.5 -6 -47.5 ATDC
Exhaust Centerline - ECL 115 115 115
Overlap 38.5 -24 -105 degrees
Notice that the cam is retarded -2.5 degrees. The ICL is actually 120. This is one of the big reasons why the '02+ LS6 cam will rev so well with such small intake duration. An intake valve closing point of 42 degrees works very well.
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TECH Fanatic
Joined: May 2016
Posts: 1,292
Likes: 436
From: St. Louis
http://www.compcams.com/Company/CC/cam-specs/Details.aspx?csid=1089&sb=2
looking at the OEM LS6 cam specs, geeze those lobes are lazy! The advertised intake duration at .006 is 270 degrees for only 204 degrees @ 0.050! The old high lift comp (which is also considered pretty lazy by today's standards) actually has less duration at .006 (265 degrees) but more at .050 (212). It also closes the intake valve quite a bit sooner (68 vs 75) so it should have a noticeably better low end and mid range when used in the smaller 4.8/5.3 engines in heavier vehicles which is often a complaint of those who have run the original style LS6 cam and are disappointed with the noticeable loss of low end power.
On The Tree
Joined: Dec 2022
Posts: 172
Likes: 25
Sorry for digging up an old thread.
Does anyone know what the actual cam valve events are for the ls6 cam.
as in.
Inlet open before tdc
Inlet close abdc
Exhaust opens atdc
Exhaust closes atdc
Thanks in advance everyone as I'm trying to work out what the factory dynamic compression ratio was set at.
Does anyone know what the actual cam valve events are for the ls6 cam.
as in.
Inlet open before tdc
Inlet close abdc
Exhaust opens atdc
Exhaust closes atdc
Thanks in advance everyone as I'm trying to work out what the factory dynamic compression ratio was set at.
Sorry for digging up an old thread.
Does anyone know what the actual cam valve events are for the ls6 cam.
as in.
Inlet open before tdc
Inlet close abdc
Exhaust opens atdc
Exhaust closes atdc
Thanks in advance everyone as I'm trying to work out what the factory dynamic compression ratio was set at.
Does anyone know what the actual cam valve events are for the ls6 cam.
as in.
Inlet open before tdc
Inlet close abdc
Exhaust opens atdc
Exhaust closes atdc
Thanks in advance everyone as I'm trying to work out what the factory dynamic compression ratio was set at.
I understand you're looking for stock specs. This is only my opinion, but if you're putting an LS6 together, as long as you've got it on the stand, I'd at least go with the upgrade cam. Not talking about a 230/240 duration@.050", with .640" lift! But a simple 215°/220°, .590"-.600" lift would make a tremendous difference with OEM 243 heads, and would idle and drive about as close to stock as you're likely to find. Again, my opinion. But if I had an LS6 going together, it sure as Hell wouldn't be with a 204° intake duration, .550" lift cam.....
..
..
BTW, I have read that the '01 LS6 cam had
207°/211° duration, .525"/.525" lift, 116 LSA. A lot of figures out there. HOWEVER, I once actually witnessed 2 Z06s run each other at the strip many years ago. They were stock, and identical, except one was an '01, and the other was an '02. Looked like twins! The '01 had 1.8 rockers, rather than stock 1.7s. Only mod either car had. I don't remember which car won. I only paid attention to mph, which is most indicative of power output. The '01 had around a 1mph higher trap speed, without exception. This somewhat verified what I'd heard up to that point, and that was if you ran 1.8s in the '01s, they ran as good as, or better than, the '02-'04. FWIW......
207°/211° duration, .525"/.525" lift, 116 LSA. A lot of figures out there. HOWEVER, I once actually witnessed 2 Z06s run each other at the strip many years ago. They were stock, and identical, except one was an '01, and the other was an '02. Looked like twins! The '01 had 1.8 rockers, rather than stock 1.7s. Only mod either car had. I don't remember which car won. I only paid attention to mph, which is most indicative of power output. The '01 had around a 1mph higher trap speed, without exception. This somewhat verified what I'd heard up to that point, and that was if you ran 1.8s in the '01s, they ran as good as, or better than, the '02-'04. FWIW......
On The Tree
Joined: Dec 2022
Posts: 172
Likes: 25
I understand you're looking for stock specs. This is only my opinion, but if you're putting an LS6 together, as long as you've got it on the stand, I'd at least go with the upgrade cam. Not talking about a 230/240 duration@.050", with .640" lift! But a simple 215°/220°, .590"-.600" lift would make a tremendous difference with OEM 243 heads, and would idle and drive about as close to stock as you're likely to find. Again, my opinion. But if I had an LS6 going together, it sure as Hell wouldn't be with a 204° intake duration, .550" lift cam.....
..
..
I want to find out the factory cam valve events so I can calculate the factory dynamic compression ratio and know what to aim for.
Because too small of cam will give to much dynamic compression ratio and to big of cam will lose torque down low.
On The Tree
Joined: Dec 2022
Posts: 172
Likes: 25
Can be a big difference between the two depending on the ramp rate.
It could be anything.