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With the recent negative communication between GM and its dealers regarding aftermarket power mods / ECU tuning, I'm not crazy about going for "obvious" power mods. Headers/heads/catless will no doubt make the ASM and DSMs refuse warrantee work in my region, so I'm looking for stealthy mods that wouldn't raise flags should the diff/tranny problems continue.

I know a StealthV tune is first on the list as the community has more than sang the praises of a good tune. I'd love to go headers, as better breathing will always help, but even a rookie tech will notice the change at the dealership.

I was thinking about just a cam, nothing too insane but perhaps a good way to keep a warrantee with some more umph. Porting and polishing the stock heads shouldn't raise any visible flags either, no?

Anyone ever just do a cam? Power increases worthwhile?

Ve good,
ace996
 

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I think it will be definitely worth it. A good port/polish job along with the cam will give you very decent gains. i don't think it will be a problem with the dealer unless you go with a radical cam. While you're there, have the stock exhaust manifolds extrude honed. :shhh: Talk about a sleeper.:sneaky:
 

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how much does a cam for our cars cost!!!
It's late at night so lazyness kicked in, it is so much easier to just ask than try to find.
thanks
 

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I wonder what the stock specs are on our current cams?
 

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I wonder if I could have a million dollars?


Ace? Ace? You still there? :duck:
 

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ace996 said:
With the recent negative communication between GM and its dealers regarding aftermarket power mods / ECU tuning, I'm not crazy about going for "obvious" power mods. Headers/heads/catless will no doubt make the ASM and DSMs refuse warrantee work in my region, so I'm looking for stealthy mods that wouldn't raise flags should the diff/tranny problems continue.

I know a StealthV tune is first on the list as the community has more than sang the praises of a good tune. I'd love to go headers, as better breathing will always help, but even a rookie tech will notice the change at the dealership.

I was thinking about just a cam, nothing too insane but perhaps a good way to keep a warrantee with some more umph. Porting and polishing the stock heads shouldn't raise any visible flags either, no?

Anyone ever just do a cam? Power increases worthwhile?

Ve good,
ace996



Call either COMP cams,...talk to a tech,..and tell him what YOU WANT.

On that note,..I went radical with my cam selection,...I gained 41 RWHP with cam, dual springs, titanium retainers, and locks.

And I HIGHLY RECOMMEND DYNO TUNEING,....nothing else.
 

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V-seriesTech said:
Call either COMP cams,...talk to a tech,..and tell him what YOU WANT.

On that note,..I went radical with my cam selection,...I gained 41 RWHP with cam, dual springs, titanium retainers, and locks.

And I HIGHLY RECOMMEND DYNO TUNEING,....nothing else.
Im with him. Even a mild cam will pick you up quite a bit and there are many cams out there that with <b>proper</b> tuning will idle and drive just like stock. a 224/224 cam is a nice streetable cam that isn't too crazy but gives just enough. I buddy of mine put one of those on with an exhaust, had it properly tuned and did 410rwhp on his Z06. You'd be close to that. Key is in the tuning in my opinion.
 

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L.Sanchez said:
Im with him. Even a mild cam will pick you up quite a bit and there are many cams out there that with <b>proper</b> tuning will idle and drive just like stock. a 224/224 cam is a nice streetable cam that isn't too crazy but gives just enough. I buddy of mine put one of those on with an exhaust, had it properly tuned and did 410rwhp on his Z06. You'd be close to that. Key is in the tuning in my opinion.

werd. Well said.

Also guys,..on the note of lift,..your stock springs cannot handle too much more then your stock application... therefore, keep in mind,..you should do springs/retainers/locks when doing a BIG cam. Otherwise,...your gonna have valve spring problems at RPM
 

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I think the idea here is what is possible in terms of power mods that won't jeapordize our warranties.

Probable that a cam would slip by unnoticed if engine trouble started up down the road? Or that a tech would tell that you had cam, dual springs, titanium retainers, and locks put in that weren't original? 410 RWHP is a nice figure if this were possible while keeping it 'stock' as far as the dealer was concerned...

Port matching the exhaust, would that get noticed if the engine melted down later on? I guess they'd have a tough time arguing that letting burnt gas out better could mess up the engine, but would it be noticed?

Skeeter
 

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V-seriesTech said:
Call either COMP cams,...talk to a tech,..and tell him what YOU WANT.

On that note,..I went radical with my cam selection,...I gained 41 RWHP with cam, dual springs, titanium retainers, and locks.

And I HIGHLY RECOMMEND DYNO TUNEING,....nothing else.
If I may ask, how did your gas mileage drop after this install? Care to share the specs of the cam, springs, etc?

Thanks
 

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BaileyMotorSports said:
If I may ask, how did your gas mileage drop after this install? Care to share the specs of the cam, springs, etc?

Thanks

Sure. 231 and 237. 595 and 598 lift @ 112 lobe seperation. It is a custom cam.

Thunder racing is who built it for me.

Honestly,...I drive fast, everywhere,...so,..you probably don't want to ask my actual fuel economy. I would be a BAD example.

On average,..I get about 11 mpg on the city streets. My highway trips, are very short, and very fast,..so, that really doesn't count either.

Sorry
 

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Skeeter said:
I think the idea here is what is possible in terms of power mods that won't jeapordize our warranties.

Probable that a cam would slip by unnoticed if engine trouble started up down the road? Or that a tech would tell that you had cam, dual springs, titanium retainers, and locks put in that weren't original? 410 RWHP is a nice figure if this were possible while keeping it 'stock' as far as the dealer was concerned...

Port matching the exhaust, would that get noticed if the engine melted down later on? I guess they'd have a tough time arguing that letting burnt gas out better could mess up the engine, but would it be noticed?

Skeeter

In that case,...skeeter... I would go with some nicely ported STOCK HEADS.....and a VERY MILD but, CUSTOM cam. You CAN get away with it,...depending on LIFT, and LOBE seperation.

Your best bet, would be the heads.

Honestly,...do the heads,...find a SLIGHTLY more radical cam then the stock LS6,....and spray you car with a hundred shot of nitrous. If your crafty enough,...you can easily, easily, easily hide everything.

Hell, if you want,...i'll give you a stock elbow, so you could plumb that one for your nitrous,...and put the OTHER stock piece on,....that way, there is NO drill marks, no taps,..nothing. Just remove the line, which you should be able to do in minutes,....

......and there you have it.

and I don't want to hear how nitrous damages a motor. Boost does too,..you have to use them BOTH in moderation.

Do it,..and you'll be grinning like the baby JACK JACK from the incredibles

Trust me. :devil:
 

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BaileyMotorSports said:
If I may ask, how did your gas mileage drop after this install? Care to share the specs of the cam, springs, etc?

Thanks

Oh...sorry. I have crane dual springs....144832-16 titanium retainers....crane as well 144661-16 thunder racing pushrods...7.400 .080 and lower seats...144460-16

Everything for the most part is crane.
 

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VsT,

What about 1.8 roller rockers (assuming 1.7 is stock)? Is this an option? What do you think the power gain would be? Any other upgrade needed?
 

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Discussion Starter #18
Good discussion here, fellas. Exactly what I wanted to spur....
With the cam, I'm not really concerned with the engine longevity as the LS6 is a beast and should handle quite a bit more power with no negative effects. I read the article on the FAQ about the LS6 motor and can confidently conclude that there is more power to be had. The factory made a big deal about emissions and ...crap! supper's at the door...I'll be back.
 

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Discussion Starter #20
No problem, Tom.

-continued- where was I?...oh, due to GM's want to meet certain MPG and emissions levels, the cam was chosen to reach the needed mpg/emissions and acceptable idle.
With a little less concern to those aspects, more power should be able to be had without blowing every anti-warrantee alarm.

The real reason why I'm looking to stay under the dealer's radar is in regards to the diff. Should the new diff not be as strong as we'd like, I'd really lose my sanity if I was denied a driveline claim due to engine work.

V-seriesTech, thanks for your info...it leads me to believe that there is a worthwhile journey to be taken down cam-lane. As far as nitrous, I have no interest in it. Its not legal on the track (my definition of track is not strip), not legal in autox.

So it sounds to me that a solid 50hp is findable with a port/polish/cam/tune...I hope I'm not being overoptimistic by thinking that a reasonable gain could reach even 70hp, although I doubt that increase could slip past the service-nazis at the dealership. If I could reach 400whp without switching to headers and keep a reasonable resemblance to stock, I'm game.

Now, to add some NO2 to the fire, how much could a mild port/polish on the stock heads cost? That should be a very stealthy mod, assuming the dealer won't open the motor without good reason.

Thanks,
ace996
 
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