LS9 Supercharged ZR1 cam
sorry but you are making a general speculation. trans/converter? You ever seen an LS9 with an auto/converter??????????????
No it was selected to meet the 100k mile warranty and emissions requirements, not dedicated performance expectations
No it was selected to meet the 100k mile warranty and emissions requirements, not dedicated performance expectations
Actually the cam was specifically designed for the LS9 and the supercharger, yes emissions played a roll in the final spec, however if you knew what you were talking about you would know that the engineers spent COUNTLESS hours profiling the cam for this vehicle....I know this for a fact.
To clear up the confusion about the "converter" statement, I was referring to the LSA (CTS-V) that has the TVS1900 and a 6L90-E transmission with a converter. That is the cam I chose to go with, although they are very close in spec to the LS9.
Be careful what you assume about the person on the other end of the keyboard, you might find I do know what I am talking about based on my experience with the development of the supercharger used on both the LS9 and LSA vehicles.
"If I knew what im talking about?" Wow...ive built as many high horsepower n/a, blower, turbo, nitrous LS1's of anyone. Ive done over 150 camshafts in LS1 based motors and dyno tuned over 500 vehicles in the 8 years ive been in the LSx business.
GM was required to meet alot of standards more than horsepower / performance production. They must meet oem standards of driveability that go far beyond normal owners needs or requirements. EPA emissions and fuel mileage standards play a large role. This is the same reason you see a 121 LSA on a LS7 stock camshaft.
Yes they spent a TON of time choosing that cam, but for alot of reasons that make it a worse choice than other custom camshafts for most peoples application or needs.
I think your last sentence sums up that you shouldnt assume you come from a more experienced position than me because where you work....because i work in the same field but spend alot more time designing LSx engine combinations than selling superchargers.
GM was required to meet alot of standards more than horsepower / performance production. They must meet oem standards of driveability that go far beyond normal owners needs or requirements. EPA emissions and fuel mileage standards play a large role. This is the same reason you see a 121 LSA on a LS7 stock camshaft.
Yes they spent a TON of time choosing that cam, but for alot of reasons that make it a worse choice than other custom camshafts for most peoples application or needs.
I think your last sentence sums up that you shouldnt assume you come from a more experienced position than me because where you work....because i work in the same field but spend alot more time designing LSx engine combinations than selling superchargers.
. I will take my 20 years experience and 7 with the OEM as a bonus in my experience yes. in my book respect is earned, and my actions speak volumes on this site. Speaking of selling: FYI, you need to be a sponsor on this site if you want to continue selling parts.
why dont the both of you just meet somewhere and start punching , you sound like children, who really cares who knows what , and for how long, this sight is for info, and asking , answering , trouble shooting ?'s
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Verdad Gallardo Having a problem with a friends truck that I am trying fix...
Out of no where this 04 silverado ECSB had the battery dead. Werent sure why, so jump started and it drove it all day for work then after the truck was parked and was walking up to get in it, the electric fans were on for some reason. This is about 2-3 hours after it was parked.
Now the electric fans are randomly coming on. I scanned the hptuners and also I'm seeing random misfired on all 8 cylinders and the truck smells of fuel strongly. It will be running really smooth then all of a sudden start missing badly and running like crap with no power.
It gets a code for the fan relay, p0300 misfires and a couple more. He took it to the dealer and they told him it was a bad computer / pcm.
So he brought me the truck, I scanned it and thought too many things werent working right at the same time and it looked like something is on the fritz. So I swapped pcm's out, re-synced the VATS/VIN and fired it up. Seemed to run perfect, i let it run for about 20 minutes and it looked like it was fixed.
Then we went to test drive it and it started missing again and doing all the same stuff, so not sure what the problem is yet.
Out of no where this 04 silverado ECSB had the battery dead. Werent sure why, so jump started and it drove it all day for work then after the truck was parked and was walking up to get in it, the electric fans were on for some reason. This is about 2-3 hours after it was parked.
Now the electric fans are randomly coming on. I scanned the hptuners and also I'm seeing random misfired on all 8 cylinders and the truck smells of fuel strongly. It will be running really smooth then all of a sudden start missing badly and running like crap with no power.
It gets a code for the fan relay, p0300 misfires and a couple more. He took it to the dealer and they told him it was a bad computer / pcm.
So he brought me the truck, I scanned it and thought too many things werent working right at the same time and it looked like something is on the fritz. So I swapped pcm's out, re-synced the VATS/VIN and fired it up. Seemed to run perfect, i let it run for about 20 minutes and it looked like it was fixed.
Then we went to test drive it and it started missing again and doing all the same stuff, so not sure what the problem is yet.
Man Blownchevy you just wont let it go!
But i agree with you , GM picked-spected out a great blower camshaft,
Funny how thunder racing and lingenfelter uses simular grinds for supercharged and turbocharged LSX engines, small intake duration, large exhaust duration, with around .600 lift and high LSA's, no overlap, even negitave overlape.
But i agree with you , GM picked-spected out a great blower camshaft,
Funny how thunder racing and lingenfelter uses simular grinds for supercharged and turbocharged LSX engines, small intake duration, large exhaust duration, with around .600 lift and high LSA's, no overlap, even negitave overlape.
After reading this thread what I think is implied but not stated is that when the manufacturers invest in high performance alot of the R&D is done that lays the foundation for vendors to come in and take it further. The problem is alot of times the vendors (especially in the past) had products that didn't perform as well as the stock high performance parts.
Emissions isn't the problem for making power like it used to be, I hear people say it's because emissions that's why the big 3 don't have bigger cams or some other parts. The reason they don't have these parts is partly emissions, drivability, durability, liability.
Group hug! Let's all be thankful that we aren't all running around in 305 IROCS and X11 Cavaliers thinking their fast.
Emissions isn't the problem for making power like it used to be, I hear people say it's because emissions that's why the big 3 don't have bigger cams or some other parts. The reason they don't have these parts is partly emissions, drivability, durability, liability.
Group hug! Let's all be thankful that we aren't all running around in 305 IROCS and X11 Cavaliers thinking their fast.
TECH Resident
Joined: Apr 2008
Posts: 834
Likes: 12
From: Right here, right now!
Is there much under the curve difference between factory LS7, LS9, LSA cams if they are all run on 1.7 rockers?
This turned into a "no, my weiner is bigger" thread.
However, this thread does pose some great questions which I hope to see answered. I know that I for one want to see more info on the LS9 and LSA blower configurations, and what us GENIII and GENIV guys need to do to make them work on our engines.
However, this thread does pose some great questions which I hope to see answered. I know that I for one want to see more info on the LS9 and LSA blower configurations, and what us GENIII and GENIV guys need to do to make them work on our engines.
On The Tree
Joined: Sep 2008
Posts: 195
Likes: 1
From: Newark, Ohio
you can get an ls9 cam from lingenfelter.com and they're saying it's a 1 bolt design. a lot of guys on the forum are saying they're getting ls9 cams with 3 bolt design. either way if you get a 1bolt, lingenfelter is saying you'll need a 1x cam sprocket, an ls2 timing cover, ls2 chain dampener, and a front style cam sensor and extension harness. gmpd sells the ls9 cam for like 97bucks. spec'd out with the other needed stuff minus extension harness and gaskets it's around 260 including an ls2 chain
This cam was designed, at huge expense I'm sure, for one very specific application....with a very specific set of parameters. It has to meet very specific operating constraints for exactly one motor. Why, oh why, are the masses crowning this cam as the be all, end all, cam for anything boosted. It gets really ridiculous when a potential user has to jump through a mass of hoops (gen III) to even install it. I know it's cheap to buy, but DAMN, add the rest of what it takes to use it into the equation. Why not get someone you trust to come up with a grind specific to your build?
I just ordered an LS9 cam for my LS2. Procharger on the way and I have to swap my MS4 cam out. This is a $95 alternative to putting the stock cam back in, and should be better than the stock LS2 cam for boost. According to lingenfelter I shouldn't need anything special if it's going in an LS2. They're 3 bolt, I know my car is 3 bolt, and it uses the same timing cover, etc... we'll see if that's true when it shows up and I get things torn down.