LS1 Hotcam owners - a few questions
#21
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Originally Posted by Rob98LS1
i do understand, I don't have a problem with changing the behavior of the car. But like i said, my car is fast enough fo me so I'm not concerned with getting as much as possible out of it, just want a sweet sound, for the most part. i doubt lowering my idle would work out too well, it'd probably die alot on me I'm guessing. If I can find a good deal on a 224 i'd possibly do that to, but it seemed like hotcams were cheaper than those so that's what i was gunnin for.
#22
yes it sucks finding a cam that will work with emissions, I thought I read somewhere that the hotcam said not 50 state smog legal (maybe summit, but not on the website) which would make sense because it has to much negative overlap. Maybe it would pass, but from I've read on here guys have a hard time passing with anything more than -6 to -4 overlap, and I wouldn't throw that thing in there to find out it doesn't, there are guys on here that must know for sure. There are other choices such as that B2 cam, I believe that thing chops more and doesn't have to high lift or duration. Check out this place for another choice
http://www.sdparts.com/product/CRA14...510551114.aspx
This place has the kit cheaper than the hotcam kit, you can use LS6 springs and it should pass and you don't have to worry about changing springs, the cam is easy on the springs just as Hotcam. Its a crane cam and the tech told me it should make more power than hotcam. I can't confirm that but its not a bad cam, plus SDPC can change the numbers so you can get it as a 224/224 cam instead of 220/224 without any extra cost. I was in the same boat as you living in L.A. and looking for something to pass, I wanted something much bigger so didn't get anything. Keep in mind Cali keeps getting tougher laws, right now car manufacters are wanting to sue the state for the increasing tougher standards-the state is trying to hit older cars as well, but it hasn't happened yet, so I wouldn't go something that is borderline passing. From what I've heard the newer LS1 Rhoads Lifters can allow you to increase duration up to 10 degrees more and still pass(this is what they told me over the phone) I think there was a chevy article on it as well. Of course you would have to pull the heads to replace them.
If I were still living in Cali, I would go no bigger than a 224/224 114 LSA and get some heads because heads can add good power and keep you emissions compliant.
There are a couple performance shops that offer heads/cam packages that will give around 400 rwhp, but it comes at a price, one shop was in San Diego, but the cost was around 6 grand installed, might as well go FI for that price and do it yourself.
http://www.sdparts.com/product/CRA14...510551114.aspx
This place has the kit cheaper than the hotcam kit, you can use LS6 springs and it should pass and you don't have to worry about changing springs, the cam is easy on the springs just as Hotcam. Its a crane cam and the tech told me it should make more power than hotcam. I can't confirm that but its not a bad cam, plus SDPC can change the numbers so you can get it as a 224/224 cam instead of 220/224 without any extra cost. I was in the same boat as you living in L.A. and looking for something to pass, I wanted something much bigger so didn't get anything. Keep in mind Cali keeps getting tougher laws, right now car manufacters are wanting to sue the state for the increasing tougher standards-the state is trying to hit older cars as well, but it hasn't happened yet, so I wouldn't go something that is borderline passing. From what I've heard the newer LS1 Rhoads Lifters can allow you to increase duration up to 10 degrees more and still pass(this is what they told me over the phone) I think there was a chevy article on it as well. Of course you would have to pull the heads to replace them.
If I were still living in Cali, I would go no bigger than a 224/224 114 LSA and get some heads because heads can add good power and keep you emissions compliant.
There are a couple performance shops that offer heads/cam packages that will give around 400 rwhp, but it comes at a price, one shop was in San Diego, but the cost was around 6 grand installed, might as well go FI for that price and do it yourself.
#23
I was just looking up the hotcam and came up with a different number than what I read before, apparently the numbers might be 218/227 112 LSA which gives it a -1.5 overlap, but still probably won't pass with that number either. the 224/224 114 gives -4 and the 220/224 114 gives a -6. For comparision here are the stock numbers I found-I haven't calculated these myself, so I won't say they are correct, but they look to be so. These wil give you an idea of how the aftermarket cams might idle and lope compared to stock cams, since your interested in the sound as well.
overlap Year Lift Duration LSA
LS1 Y-Body’s (Corvettes)
-31 97-99 .472/.479 199/209 117
-27.5 2000 .500/.500 198/209 115.5
-30.5 01-03 .467/.479 196/207 116
---------------------------------------
LS6 Y-Body’s (Corvettes)
-24.5 2001 .525/.525 204/211 116
-24 02-03 .555/.551 204/218 117.5
---------------------------------------
LS1 F-Body’s (Camaro, Firebird)
-35.5 98-00 .500/.500 198/209 119.5
-30.5 01-02 .467/.479 196/207 116
Here is an article by car craft that mentions that the hotcam "may not pass"
http://www.carcraft.com/howto/ls1_engine_cam_install/
overlap Year Lift Duration LSA
LS1 Y-Body’s (Corvettes)
-31 97-99 .472/.479 199/209 117
-27.5 2000 .500/.500 198/209 115.5
-30.5 01-03 .467/.479 196/207 116
---------------------------------------
LS6 Y-Body’s (Corvettes)
-24.5 2001 .525/.525 204/211 116
-24 02-03 .555/.551 204/218 117.5
---------------------------------------
LS1 F-Body’s (Camaro, Firebird)
-35.5 98-00 .500/.500 198/209 119.5
-30.5 01-02 .467/.479 196/207 116
Here is an article by car craft that mentions that the hotcam "may not pass"
http://www.carcraft.com/howto/ls1_engine_cam_install/
#24
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Originally Posted by Rob98LS1
1. Will I be able to pass CA emissions with this camshaft?
2. What pushrod size will I need?
3. Do I need a larger oil pump for this cam?
4. What does this camshaft sound like? More aggressive than a Z06 cam I hope...
- Robby
2. What pushrod size will I need?
3. Do I need a larger oil pump for this cam?
4. What does this camshaft sound like? More aggressive than a Z06 cam I hope...
- Robby
2. stock push rod length
3. no
4. here's my car, Hotcam, LT's ORY and Corsa
http://www.ls1sounds.com/Corsa/corsa..._WS6-idle.mpeg