LS2 Cam Info
09-01-2004, 12:59 PM
#1
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LS2 Cam Info I've been given some LS2 camshaft information, hope this is useful:
Hey it would be cool if you let the community know that the "2" cam specifications are exactly the same as the current "1/6". The bearing diameter are also the same, not larger as one suppected. If the block diameters are indeed larger then I would assume that a larger bearing will be used. The interesting thing is the reloctor ring for the cam sensor. The "2" cam specs does not have one at all which leads me to believe that a external ring and sensor maybe used. Although the block drawings I have seen so far does not show hole locations so I can't give any input on sensor re-arrangement. I think the community would love to know that the current selection of cams would still be usable. Lobe/bearing placement and everything else are identical, so this is a great thing.
>LS2 is the same as the what? LS6? I don't understand your notation.
In reference to the journal diameter/spacing and lobe placement. The LS2 has NO ring on the cam, thus my speculation of a external ring.
>LS2 does not have a cam sensor reluctor wheel? I thought it was in
>the front?
I'm assuming it will be in the front but externally, perhaps mounted on the sprocket. I guess we'll see.
>If the reluctor is in front, then the grinds would be more or less
>identical but just with an LS2 style cam blank right?
>
Grinds are identical but the new style has NO reluctor ring physically on the cam. Thus a LS1/6 will slide right in, the reluctor would simple not be referenced. Perhaps I'm being confusing, here a easy way to picture it. Take a current LSx grind of the reluctor ring between #4 & #5 journals and you have a LS2 cam. Comparing the LS6 to LS2, the LS6 has 117.5 LSA vs. LS2s 116 LSA. Their is less overlap, duration and lift in the new cam when comparing to the current to an LS6 cam.
Hey it would be cool if you let the community know that the "2" cam specifications are exactly the same as the current "1/6". The bearing diameter are also the same, not larger as one suppected. If the block diameters are indeed larger then I would assume that a larger bearing will be used. The interesting thing is the reloctor ring for the cam sensor. The "2" cam specs does not have one at all which leads me to believe that a external ring and sensor maybe used. Although the block drawings I have seen so far does not show hole locations so I can't give any input on sensor re-arrangement. I think the community would love to know that the current selection of cams would still be usable. Lobe/bearing placement and everything else are identical, so this is a great thing.
>LS2 is the same as the what? LS6? I don't understand your notation.
In reference to the journal diameter/spacing and lobe placement. The LS2 has NO ring on the cam, thus my speculation of a external ring.
>LS2 does not have a cam sensor reluctor wheel? I thought it was in
>the front?
I'm assuming it will be in the front but externally, perhaps mounted on the sprocket. I guess we'll see.
>If the reluctor is in front, then the grinds would be more or less
>identical but just with an LS2 style cam blank right?
>
Grinds are identical but the new style has NO reluctor ring physically on the cam. Thus a LS1/6 will slide right in, the reluctor would simple not be referenced. Perhaps I'm being confusing, here a easy way to picture it. Take a current LSx grind of the reluctor ring between #4 & #5 journals and you have a LS2 cam. Comparing the LS6 to LS2, the LS6 has 117.5 LSA vs. LS2s 116 LSA. Their is less overlap, duration and lift in the new cam when comparing to the current to an LS6 cam.
09-01-2004, 01:07 PM
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Originally Posted by Pro Stock John
Comparing the LS6 to LS2, the LS6 has 117.5 LSA vs. LS2s 116 LSA. Their is less overlap, duration and lift in the new cam when comparing to the current to an LS6 cam.
09-01-2004, 02:05 PM
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If you guys have any questions, post away, I will send them to the birdy.
Sounds like they are using something like the 01 Z06 cam but I don't have that confirmed.
Sounds like with a small bit of r&d we'll see LS2 cams quickly, and we can use all of our current terminology and cam names!!!!!!!!!
Sounds like they are using something like the 01 Z06 cam but I don't have that confirmed.
Sounds like with a small bit of r&d we'll see LS2 cams quickly, and we can use all of our current terminology and cam names!!!!!!!!!
09-01-2004, 02:23 PM
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Originally Posted by John B
I believe they're just using the 2001 LS6 cam, hence the narrower LSA
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09-01-2004, 04:03 PM
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birdy:
Seen your post and I got to tell you, you guys are pretty sharp. After cross-referencing 12560950 vs. 12574519 they are exactly the same, with exception of the reluctor ring of course. I have a feeling we are gonna see some very quick LS2's real soon.
Seen your post and I got to tell you, you guys are pretty sharp. After cross-referencing 12560950 vs. 12574519 they are exactly the same, with exception of the reluctor ring of course. I have a feeling we are gonna see some very quick LS2's real soon.
09-01-2004, 04:12 PM
#11
I thought the ls2 used a whole different type of cam, because they moved something to rear of the engine as opposed to the front for ls1's? Am I right or am I wrong? I thought ls1 cams and ls2 cams were not interchangeable.
Now that I read the first post I believe it is the cam sensor I am asking about. Now that I read the first post it looks like cams are interchangeable, but nobody is sure I think.
Now that I read the first post I believe it is the cam sensor I am asking about. Now that I read the first post it looks like cams are interchangeable, but nobody is sure I think.
Last edited by 52172; 09-01-2004 at 04:18 PM.
09-01-2004, 04:43 PM
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Originally Posted by Pro Stock John
birdy:
Seen your post and I got to tell you, you guys are pretty sharp. After cross-referencing 12560950 vs. 12574519 they are exactly the same, with exception of the reluctor ring of course. I have a feeling we are gonna see some very quick LS2's real soon.
Seen your post and I got to tell you, you guys are pretty sharp. After cross-referencing 12560950 vs. 12574519 they are exactly the same, with exception of the reluctor ring of course. I have a feeling we are gonna see some very quick LS2's real soon.
09-01-2004, 04:46 PM
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Right. But other than the location of the reluctor wheel the cams are the same. That is the great news here. That we can use all of our existing cam research with the LS1/LS6 with the LS2.
09-01-2004, 06:28 PM
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Originally Posted by Pro Stock John
Or as jMX pointed in AIM, maybe you can slide an LS1/LS6 cam into a LS2 block if the reluctor is on the sprocket.
09-01-2004, 06:38 PM
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Originally Posted by AgentOrange
Thats the way I'm looking at it. Now all we need is HP Tuner guys to get crackin at the PCM
09-01-2004, 06:40 PM
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Whew! When you take in consideration the 01 LS6 cam is used for the LS2, the dyno numbers don't look bad at all (especially the torque). It just leaves one question aimed at the GM engineers.. Why equip the LS2 with a relatively weak cam on a brand new engine? At minimum use the 2002-up LS6 cam, but they really should have spec'd a new cam. I bet for MY06 it's changed.
09-01-2004, 08:42 PM
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Originally Posted by BLKTA
Whew! When you take in consideration the 01 LS6 cam is used for the LS2, the dyno numbers don't look bad at all (especially the torque). It just leaves one question aimed at the GM engineers.. Why equip the LS2 with a relatively weak cam on a brand new engine? At minimum use the 2002-up LS6 cam, but they really should have spec'd a new cam. I bet for MY06 it's changed.