Cam size vs. Smog
Thread Starter
Racer
Joined: Jan 2007
Posts: 276
Likes: 4
From: San Jose CA
Cam size vs. Smog
Hey Guys, I am thinking of doing a cam soon and am not sure how big I should go.
I have a 2003 Z06 with kooks headers, hiflow cats, Borla stinger, blackwing intake, and a bbk throttle body that was on the car when I bought it (i think 80mm)
I am looking at several cams right now, but dont know how big I can go and still pass CA smog. I know that the headers will have to be swapped when I smog, but that is not as much work as a cam.
I am looking at G5X2, G5X3, and some thunder racing cams.
I want to have a strong solid idle, and not too much of lope (114, maybe 112 LSA). But I want to get as much hp as I can get from the 4300-6000 range.
What are your recommendations? I was going to wait until I can afford to do heads, but I have a sickness and cant stop shopping for parts. Plus a fiend with a pesky snake wants to play (2006 Viper Vert.). Can I hang with him, considering drivers have same capabilities?
I have a 2003 Z06 with kooks headers, hiflow cats, Borla stinger, blackwing intake, and a bbk throttle body that was on the car when I bought it (i think 80mm)
I am looking at several cams right now, but dont know how big I can go and still pass CA smog. I know that the headers will have to be swapped when I smog, but that is not as much work as a cam.
I am looking at G5X2, G5X3, and some thunder racing cams.
I want to have a strong solid idle, and not too much of lope (114, maybe 112 LSA). But I want to get as much hp as I can get from the 4300-6000 range.
What are your recommendations? I was going to wait until I can afford to do heads, but I have a sickness and cant stop shopping for parts. Plus a fiend with a pesky snake wants to play (2006 Viper Vert.). Can I hang with him, considering drivers have same capabilities?
Racer
Joined: Aug 2007
Posts: 288
Likes: 1
From: RSM CA
Hey Guys, I am thinking of doing a cam soon and am not sure how big I should go.
I have a 2003 Z06 with kooks headers, hiflow cats, Borla stinger, blackwing intake, and a bbk throttle body that was on the car when I bought it (i think 80mm)
I am looking at several cams right now, but dont know how big I can go and still pass CA smog. I know that the headers will have to be swapped when I smog, but that is not as much work as a cam.
I am looking at G5X2, G5X3, and some thunder racing cams.
I want to have a strong solid idle, and not too much of lope (114, maybe 112 LSA). But I want to get as much hp as I can get from the 4300-6000 range.
What are your recommendations? I was going to wait until I can afford to do heads, but I have a sickness and cant stop shopping for parts. Plus a fiend with a pesky snake wants to play (2006 Viper Vert.). Can I hang with him, considering drivers have same capabilities?
I have a 2003 Z06 with kooks headers, hiflow cats, Borla stinger, blackwing intake, and a bbk throttle body that was on the car when I bought it (i think 80mm)
I am looking at several cams right now, but dont know how big I can go and still pass CA smog. I know that the headers will have to be swapped when I smog, but that is not as much work as a cam.
I am looking at G5X2, G5X3, and some thunder racing cams.
I want to have a strong solid idle, and not too much of lope (114, maybe 112 LSA). But I want to get as much hp as I can get from the 4300-6000 range.
What are your recommendations? I was going to wait until I can afford to do heads, but I have a sickness and cant stop shopping for parts. Plus a fiend with a pesky snake wants to play (2006 Viper Vert.). Can I hang with him, considering drivers have same capabilities?
The biggest thing with cams and smog is the overlap, between exhaust and intake, a lot of times you can get away with increasing lift which inturn increases volume but when you increase duration you tend to fall out of the smog arena I hope this makes sense to you.
Drifting
Joined: Oct 2002
Posts: 1,773
Likes: 66
From: SoCal
Reading all these cam threads and smog it seems if you go below 114 LSA you're getting into the danger zone. I'm sure 112 LSA cams have passed too, but to be safe it seems to stay with 114 LSA cams. Please correct me if I'm wrong on this. Been reading these for awhile in hopes to put a cam in my 99 coupe as well. Cams and Cali smog can be a pain.
Greg
Greg
Thread Starter
Racer
Joined: Jan 2007
Posts: 276
Likes: 4
From: San Jose CA
How big of a difference does the LSA make for hp and tq gains?
So which of these cams would you say will give the best gains, while keeping drivability and smogability?
LG Cams
Thunder Racing Cams
Thanks
So which of these cams would you say will give the best gains, while keeping drivability and smogability?
LG Cams
Thunder Racing Cams
Thanks
Melting Slicks
Joined: Sep 2004
Posts: 3,178
Likes: 13
From: N. County/San Diego
I`m sure there are tuners that may be able to pass something"a little bigger" but that`s pushing it.
Thread Starter
Racer
Joined: Jan 2007
Posts: 276
Likes: 4
From: San Jose CA
Oh well. How much hp can I expect with a good tund and this cam?
Burning Brakes
Joined: Jan 2004
Posts: 933
Likes: 0
From: Inland Empire CA
The G5X2 or G5X3 might be a little hard to pass here in CA. Besides if you're looking to maximize your midrange power and not a lot of lope then those big cams aren't for you. Something like a TR 224 would give you a great midrange and pass smog no problem.
As for LSA properties: See this - http://www.compcams.com/Technical/FAQ/LSAproperties.asp
It wouldn't hurt to call a speed shop to tell them your goals.
GKE - you should pass if everything is spot on. I've "heard" of larger cams passing but.... I'd like to see the actual smog report......
As for LSA properties: See this - http://www.compcams.com/Technical/FAQ/LSAproperties.asp
It wouldn't hurt to call a speed shop to tell them your goals.
GKE - you should pass if everything is spot on. I've "heard" of larger cams passing but.... I'd like to see the actual smog report......
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Instructor
Joined: Feb 2007
Posts: 218
Likes: 0
From: Seaside Ca.
I did research on this sometime ago as far as the biggest cams that can be installed and still pass Ca. smog. Look at my past threads/posts and you will find some info. There were a couple of Z06's that pulled about 450 rwhp running the LG-G5X1-E emissions cam and AFR heads.
Pro
Joined: Sep 2005
Posts: 595
Likes: 0
From: Palmdale CA
I'm looking for more of a top end cam. Using a kenne bell when they get the smog cert. Would the LS7 cam be good?
LS2 block
Callies rods
Wiseco pistons (right around -28cc dish)
Callies crank
AFR 225 64cc heads (or something with a THICK deck)
8.9-9.0:1cr
clevite bearings
LS6 lifters
Comp 921 springs
Comp pushrods
Cometic .051 MLS gaskets
ECS 8" crank pulley
ARP main and rod studs
ARP head studs (Unless stock deck. Then ARP L19 studs)
Stock 1.7 rockers
Kenne Bell 2.8H 16-18psi
LS2 block
Callies rods
Wiseco pistons (right around -28cc dish)
Callies crank
AFR 225 64cc heads (or something with a THICK deck)
8.9-9.0:1cr
clevite bearings
LS6 lifters
Comp 921 springs
Comp pushrods
Cometic .051 MLS gaskets
ECS 8" crank pulley
ARP main and rod studs
ARP head studs (Unless stock deck. Then ARP L19 studs)
Stock 1.7 rockers
Kenne Bell 2.8H 16-18psi
The G5X2 or G5X3 might be a little hard to pass here in CA. Besides if you're looking to maximize your midrange power and not a lot of lope then those big cams aren't for you. Something like a TR 224 would give you a great midrange and pass smog no problem.
As for LSA properties: See this - http://www.compcams.com/Technical/FAQ/LSAproperties.asp
It wouldn't hurt to call a speed shop to tell them your goals.
GKE - you should pass if everything is spot on. I've "heard" of larger cams passing but.... I'd like to see the actual smog report......
As for LSA properties: See this - http://www.compcams.com/Technical/FAQ/LSAproperties.asp
It wouldn't hurt to call a speed shop to tell them your goals.
GKE - you should pass if everything is spot on. I've "heard" of larger cams passing but.... I'd like to see the actual smog report......
