Well I'm planning on camming my 2005 GTO (LS2 motor). I'm just starting to learn about the specs and what not on them. I'm also trying to keep it around $900 cuz I still have to pay to have it installed. I understand you need the cam, springs, hardened pushrods... and?

My car is a daily driver, and I may have to pass emissions (not sure probably just a visual and compter hook up but they may do smog). I'm not looking for something too agressive, just a slight lope to it, and something that wont destroy my gas milage. Looking to get at least 30RWHP from it.

My goal is around 410RWHP... at least 400. I've dynoed 330RWHP all stock with 900 miles on the car. I'm also doing Stainless Works LT's/high flow cats, custom 2 1/2" Borla XR-1 cat back, K&N CAI, and a dyno tune... I expect around 380RWHP with those alone. If someone can help me out that would be great

 

the LS2 uses the same cams as the LS1 correct?

i would say the TR224 cam should yield what you are looking for. they average a 25-30hp gain on stock head equipped LS1s. and they still pass emissions.

 

Yep the LS2 will use a lot of the same parts as the LS1, including the cam. I'm looking to get a soild 30 out of it. It's getting a dyno tune so even going alittle bigger I should have no troubles with emissions.

The shop was orignaly wanting to do a G5X3 cam and said I would have no problmes with emissions with it... I shouldn't have to do smog, but just in case I would like to be able to pass. Though I didn't want to go with something that big.

I would also like to if possilbe have one that would give power thourghout the power band.

 

There is NO WAY the G5X3 has negative overlap, and would therefor pass emissions. The G5X2 has 232/240 on a 112 or 114 and isn't clean and the X3 is bigger.

First, read this:http://ls1tech.com/forums/showthread.php?t=327734
Overlap calculation is in there IIRC. Use that to determine if a cam will run clean or dirty.

Here are a few of questions you need to answer prior to deciding on a cam.
Is the goat an A4 or M6? What RPM range are you wanting to run in? Do you mind changing springs regularly? Does fuel milage matter? Do you want lope or to be a sleeper?

Now go onto LS1tech and LS2.com and do some searches for "cam." Research this, and check out the dyno threads. DO NOT base cam choice off a high number dyno, but rather off an average of what was made by several people. Also pay attention to power under the curve instead of peak numbers. Pay attention to supporting mods and where in the RPM range the power comes. With a heavy goat a great curve will do much more for you than any peak numbers.

Now, if you just want to be lazy, go get a TSP 225, TR224 or MTI C2 on a 114.

If you are on a budget, check in LS2 and LS1tech in the local forums. There are probably guys near you selling good cams and the other stuff. I just picked up a never ran cam for $80 and pushrods for $60. There are 3 other cams selling local to me for under $200. You can probably find a local guy that'll do installs for much less than a shop will charge also. If he is good, the locals will know.

 

Yeah I've been reading up. I see a lot of recommendations for the TR224, which is one I've been thinking of getting. A guy is selling the TR224 kit with everything for $400 (cam, springs, hardened pushrods, titanuim retainers and titanuim keepers. Has 4k miles on the kit... what you guys think?

 

Not bad, but I've seen better deals. What PRs and springs?

 

Just the one that comes with the kit... Comp Cams 26918 Valve Springs and Thunder Racing Stock Length Pushrods.

I think I will probably just order me the same kit new from Thunder Racing for $800. My question is what is the difference between the 224/224 .563/.563 112 and the 224/224 .563/.563 114?

The kit comes with the TR224 cam, Comp Cams 26918 Valve Springs, Thunder Racing Stock Length Pushrods and Titanium Retainers for $730 plus shipping.

 

the lobe seperation will affect the idle characteristics of the cam.

lower the number, 112 compared to 114, the more lope you get at idle. this also has an adverse affect on emissions. although i think that cam is mild enough to pass emissions with either, given the proper tune. but don't quote me on that. the 112 could be enough to push you just a smidgen over the edge of "legal"

also the lower lobe separation affects where the power is in the powerband. i think lower creates better mid range, higher brings the power in the upper rpms.
one of the tech lines from the sponsors could confirm that. i say call up TR and see what they suggest for your goals.

 

Yep I was reading up on that. As you say I also believe the lower lobe means for a mid RPM power range while the higher is for a higher RPM power range. Would I have to worry about replacing the springs often with either of these cams? I also did email ED ( http://www.flowtechinduction.com/products.htm ) again, he said he could have a cam to me by Dec 6th if I get it started on by tomorrow.

 

The LT's you're planning will be great for a cammed motor, but even with high flow cats they won't pass visual. Relocating cats is against emissions laws. Sorry. How strict of a state are you going to have this car in?

Abe

 

the TR224 won't go through springs. you should be fine.

 

I live in Az. I know plenty of guys with LT's and duals (some with no cats even), so I don't think they are that strict. I also just asked a few of them about a sniff test, I won't have to have one. So I can go as big of a cam as I want. Though as I said I'm looking for power pretty much through the whole RPM range.

One think I'm itching to know... may be a dumb question. Going with the TR224 or any other cam to say. Will I lose low end power? I mean like have less low RPM power than stock?

 

not unless you go pretty big....all the cams should have the same or slightly more power down low.

 

But some kick in hard at 2500 rpm and work to 6000 rpm and others kick in at3000 rpm and continue to 6800 rpm.

How high to you want to rev your engine and do you want to run gears to keep it in it's proper power band?

A big cam will generate more power, but it'll be at higher RPM. If your car is not set up to run at those RPM, a car with a smaller cam with a proper set up will beat you.

The TR224 is on XE lobes, the comp 224 w/~.580 lift is XER lobes. Its harder on springs but generates more power. The tighter LSA brings you into your power range quicker, but the wider LSA has a wider power band and generates less overlap and is more emmissions and A4 friendly. a TR 224 on a 112 is not clean. The 114 is barely clean and requires a good tune to be so.

 

Alrighty... thinking of going with the G2 G2. Would I have to change springs often on the cam? I'm looking to get a nice power curve... so I would want to go with the 112? If you "clean" as emissions I don't have to worry about that. The shop that is doing it all has a guru tuner there, I hear he is one of the best in the state and does amazing work.

Really if I would get 30+RWHP out of the TR224 I would go with that, if not it's the G2 G2.