Dyno Pull Gone Bad....
Race Director
Joined: Dec 2006
Posts: 12,387
Likes: 2,909
From: Fort Worth, Texas
The LS9 cam is worth ~25hp from the dynos I have seen on an LS3. It's 7* larger on the intake and 19* larger on the exhaust with .011" more lift on the intake and .033" on the exhaust it would gain more than 1.85 rockers or ported intake imo and be cheaper. The hot cam from GM made 40hp more in a LS3 in the article below and it would still work with your stock springs/pushrods. The ASA cam mentioned is 8* larger on the intake with the same lift so I imagine it'd make ~15hp more. Though the hp gain of 95hp from the alleged 525hp crate engine already takes into account bolt-ons I believe as you can see in the dyno what a stock LS3 does with them at the crank and then the difference from the additional cam. Another option for good bang for buck valve springs are Brian Tooley dual .660" for $219, hope this helps.
http://www.gmhightechperformance.com...n/viewall.html
http://www.gmhightechperformance.com...n/viewall.html
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,108
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
But DO keep in mind that jpee does NOT use skinnies nor remove the passenger seat of his well optioned C6 like many of us have done, heavy Optima battery and sometimes a nearly full tank of gas too (I've yelled at him for that part already LOL
).But even still, he can run 11.50s with a stock internals/bolt ons LS3 at E-town even at his raceweight. If not during June/July/August then at least during the rest of the year.
John's not going to have problems running 11.50's, since Cartek can surely tune better than me.
Drifting
Joined: Jan 2010
Posts: 1,447
Likes: 1
From: Katy TX
The LS9 cam is worth ~25hp from the dynos I have seen on an LS3. It's 7* larger on the intake and 19* larger on the exhaust with .011" more lift on the intake and .033" on the exhaust it would gain more than 1.85 rockers or ported intake imo and be cheaper. The hot cam from GM made 40hp more in a LS3 in the article below and it would still work with your stock springs/pushrods. The ASA cam mentioned is 8* larger on the intake with the same lift so I imagine it'd make ~15hp more. Though the hp gain of 95hp from the alleged 525hp crate engine already takes into account bolt-ons I believe as you can see in the dyno what a stock LS3 does with them at the crank and then the difference from the additional cam. Another option for good bang for buck valve springs are Brian Tooley dual .660" for $219, hope this helps.
http://www.gmhightechperformance.com...n/viewall.html
http://www.gmhightechperformance.com...n/viewall.html
Thread Starter
Race Director
Joined: Oct 1999
Posts: 13,298
Likes: 14
From: Somers NY
Melting Slicks
Joined: Dec 2011
Posts: 2,209
Likes: 16
From: Yorktown Heights NY
Anybody know if you can put the LS9 cam into an LS2??? (I'm cam shopping)...
Jpee... sounds like you're on a good track to getting her back on the road, faster than ever. Sorry again about this crazy hassle you're going through.
Jpee... sounds like you're on a good track to getting her back on the road, faster than ever. Sorry again about this crazy hassle you're going through.
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
The ls9 cam is a cam made for a blown engine that must comply with emissions standards and a 100,000 mile power train warranty. Personally I wouldn't use a cam for a blower car on a N/A car.
The LS3 heads have substantially different flow characteristics than the ls2 heads. I would not use a ls3 designed cam with an ls2.
If you have a natural aspirated engine that you don't need to comply with emissions standards, you can get a cam that is substantially more suited to your needs.
It's generally good practice to match your components as a system, you will be much happier with the result.
Race Director
Joined: Mar 2005
Posts: 11,549
Likes: 27
From: Southampton NJ
My opinion is if you are going to bother going to the trouble to put in a cam, get a cam designed specifically for the operating characteristics you plan to use the car in.
The ls9 cam is a cam made for a blown engine that must comply with emissions standards and a 100,000 mile power train warranty. Personally I wouldn't use a cam for a blower car on a N/A car.
The LS3 heads have substantially different flow characteristics than the ls2 heads. I would not use a ls3 designed cam with an ls2.
If you have a natural aspirated engine that you don't need to comply with emissions standards, you can get a cam that is substantially more suited to your needs.
It's generally good practice to match your components as a system, you will be much happier with the result.
The ls9 cam is a cam made for a blown engine that must comply with emissions standards and a 100,000 mile power train warranty. Personally I wouldn't use a cam for a blower car on a N/A car.
The LS3 heads have substantially different flow characteristics than the ls2 heads. I would not use a ls3 designed cam with an ls2.
If you have a natural aspirated engine that you don't need to comply with emissions standards, you can get a cam that is substantially more suited to your needs.
It's generally good practice to match your components as a system, you will be much happier with the result.
Joe is 100% correct
Melting Slicks
Joined: Dec 2011
Posts: 2,209
Likes: 16
From: Yorktown Heights NY
Great advice Joe and of course you're right.. I'm just swimming in Cam research, specs and 'opinions'... the article on the LS9 cam was interesting for sure. I'm not looking for a radical cam in any way.. I know I'll need to do the other upgrades at the same time, so I'm just exploring all options. Now, the Jpee's thread digressed into a cam discussion, I just had to ask.
I like some of Spin's threads on Cams. Good reading for sure.
I like some of Spin's threads on Cams. Good reading for sure.
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Safety Car
Joined: May 2011
Posts: 3,807
Likes: 508
From: Oshawa, Ontario
jpee if you swap out that cam or have the front engine cover off your new engine dont forget to swap out the finicky high tech failure prone cam chain tensioner in the LS3 for the bullet proof LS2 chain dampener p/n 12588670 that is used on the LS7 and LS9 also. dont want to be pulling oil pan later and trying to fish out pieces of the LS3 chain tensioner. I believe they are under $20. Dan
Intermediate
Joined: Jun 2013
Posts: 25
Likes: 0
From: San Antonio TX
My opinion is if you are going to bother going to the trouble to put in a cam, get a cam designed specifically for the operating characteristics you plan to use the car in.
The ls9 cam is a cam made for a blown engine that must comply with emissions standards and a 100,000 mile power train warranty. Personally I wouldn't use a cam for a blower car on a N/A car.
The LS3 heads have substantially different flow characteristics than the ls2 heads. I would not use a ls3 designed cam with an ls2.
If you have a natural aspirated engine that you don't need to comply with emissions standards, you can get a cam that is substantially more suited to your needs.
It's generally good practice to match your components as a system, you will be much happier with the result.
The ls9 cam is a cam made for a blown engine that must comply with emissions standards and a 100,000 mile power train warranty. Personally I wouldn't use a cam for a blower car on a N/A car.
The LS3 heads have substantially different flow characteristics than the ls2 heads. I would not use a ls3 designed cam with an ls2.
If you have a natural aspirated engine that you don't need to comply with emissions standards, you can get a cam that is substantially more suited to your needs.
It's generally good practice to match your components as a system, you will be much happier with the result.
Instructor
Joined: Jul 2013
Posts: 136
Likes: 0
Great advice Joe and of course you're right.. I'm just swimming in Cam research, specs and 'opinions'... the article on the LS9 cam was interesting for sure. I'm not looking for a radical cam in any way.. I know I'll need to do the other upgrades at the same time, so I'm just exploring all options. Now, the Jpee's thread digressed into a cam discussion, I just had to ask.
I like some of Spin's threads on Cams. Good reading for sure.
I like some of Spin's threads on Cams. Good reading for sure.
Race Director
Joined: Dec 2006
Posts: 12,387
Likes: 2,909
From: Fort Worth, Texas
Just to clarify the only difference in the LS9 cam for a "blower" and the LS7 cam which is a "NA" cam is a 2* wider LSA and that could very well be for emissions because of trying to run the same size cam in a smaller motor
Yes there are better aftermarket grinds out there, I was only sharing that info with jpee being that he sounds like he's on a budget and only looking for a small gain in power.
Yes there are better aftermarket grinds out there, I was only sharing that info with jpee being that he sounds like he's on a budget and only looking for a small gain in power.
Thread Starter
Race Director
Joined: Oct 1999
Posts: 13,298
Likes: 14
From: Somers NY
Just to clarify the only difference in the LS9 cam for a "blower" and the LS7 cam which is a "NA" cam is a 2* wider LSA and that could very well be for emissions because of trying to run the same size cam in a smaller motor
Yes there are better aftermarket grinds out there, I was only sharing that info with jpee being that he sounds like he's on a budget and only looking for a small gain in power.
Yes there are better aftermarket grinds out there, I was only sharing that info with jpee being that he sounds like he's on a budget and only looking for a small gain in power.
I DON'T want to put in an LS3 and screw it up also...
Drifting
Joined: Feb 2010
Posts: 1,527
Likes: 34
IMO, any performance designed car from any brand had spent countless hours in the making, backed up with an warranty from the maker basing on their engineered over design within the reliability parameters. When we push that envelope with go fast goodies, we are in the arena of pay to play.
That said, within the C6 family, we are blessed with base, Z06 and ZR1, personally, if I want a lot more power, given the iffy reliability with the Z06, I would go for the ZR1 along with the warranty and call it a day.
Based on experiences, I am perfectly satisfy with my base, along with basic hot rod 101, consist with Fast intake, long tube and such, all without extreme violation of the basic design parameters as to make my LS2 into an money pit.
I do understand we all have different levels of "Go For Broke" tolerance.
That said, within the C6 family, we are blessed with base, Z06 and ZR1, personally, if I want a lot more power, given the iffy reliability with the Z06, I would go for the ZR1 along with the warranty and call it a day.
Based on experiences, I am perfectly satisfy with my base, along with basic hot rod 101, consist with Fast intake, long tube and such, all without extreme violation of the basic design parameters as to make my LS2 into an money pit.
I do understand we all have different levels of "Go For Broke" tolerance.