you guys think that someone will make cams for our car??? i mean its been 2 1/2 years that the car is on the market and still no cams for it...

 

I doubt it becuase only 5 people would probably buy them. Very few people will want to go through the hassle of tuning for the cams for these cars.

 

Well, if it's possible to make big gains with a turbo and/or ported head, then cams become more of an afterthought, since they'd already be hard to make because of being specialized due to the fuel pump and such.

Having cams offered seems like a nice thing at first, but I'm not so sure it'd benefit us. For instance, if you specialized the cams for upper RPM performance, then it still wouldn't help us because the turbo runs out of breath... which means you're right back to needing a bigger turbo... which means you didn't need the cams anymore to make the power to begin with.

Something like that benefits the N/A Cobalts and SS/SCs more because they can utilize having the engine take larger "breaths". The SS/SC's supercharger, for instance, keeps pushing more air the higher RPM you take it, so that makes sense for that application because you can utilize it.

You could make the point of somebody having an upgraded turbo and then wanting them, but then you're talking about a very small number of potential customers because the percentage of those that go that route is very small... for an engine with a small production number to begin with.

I didn't want to come across as a wet blanket, but I've thought about this before, and although it'd be fun to be cammed, it just doesn't make sense unless it's a one-off or something.

 

Cam driven high pressure fuel pump means the answer is likely no. If so they will be very expensive for the gains involved.

 

^^^this.... too much for most companies won't want to deal with it.

 

Here is a question... are you wanting a company to 'make' cams... or are you simply wanting to run a more aggressive cam profile in your own car?
Cause running more aggressive cams is possible without having to wait for some one to mass produce them.

 

You get your car running right, yet?

 

Cams seem to be a diminished return on investment in most cobalts.

 

Can you imagine how our sumabich computer would react to bumpier cams? Quite an excercise to tune for sure, if we even have the tables necessary to do so.

 

ok for the bajillionth time. LNFs do not need aftermarket cams.


You can adjust the cam phasing to be as aggressive or as conservative as you like via tuning.

Wht that means is, you can more or less change the profile of your cam by just getting a tune

 

Um... not quite.
The phasing simply adjusts the timing of the valve events. It has no bearing on lift or duration.... that is all in the lobe profile.

 

hey favian..(i know off topic) are u in for the meet on the 25th?? lmk were still missing some balts for the big meet

 

Ok, and why do you need anymore then that? are there some 700hp lnfs running around that i don't know about? for 99% of people in cobalts and especially for the guy who atarted this thread, cams are def not needed. he would need to upgrade his turbo, port his head, build his bottom end, switch to an air to water IC, build his tranny and upgrade so many other things before cams should even come to mind.

 

I don't recall saying that everyone needs cams, or even that they are recommended for anyone on the stock turbo. All I said was that VVT doesn't control the lift and duration.

But while we're on it... I'm sure many of the LNF guys with upgraded turbos and a head that is 'fixed' would benefit from a more aggressive turbo grind cam. It's a known fact that many ecotecs have to be force fed to make any power... I'm sure opening it up a bit wouldn't hurt.

 

you can contact Pt-performance about cams. they made some cams for the mazdaspeed 3 and had good results on top end. remember the mazdaspeed was also direct injected. think they're only 4 sets of cams out there that are on a speed 3, three are on built motors and the guinea pig car was involved in a crash. they did say that on a stock ms3 they were able to pick up 20whp up top, which was good cuz the turbo would fall flat at 5000 rpms, and had the ability to go up to 7200 rpms. give them a call they are respected in the srt4 community and earned the respect on the ms3 community.

 

Making a cam to drive GM's high pressure fuel pump is as simple as adding an extra triangular lobe on the end of the intake cam. That's it.

But yes... the gains likely wouldn't be worth the cost unless you're running out of mods to do.

 

someone already did make some, i remember a guy testing them along time ago, then he dissapeared, never shared the results, dont know what happened with that.

 

Hey Fabian seems this guy has you all figured out

 

LSJ's been on the market for longer and there aren't any cams out there.

Custom grinds if you want. Honestly, not much to gain though.

 

I would LOVE the sound of some cams on my LNF... That would be nasty as ****!!! I'm willing to pay $1000.00....

 

I know the Evo9's can 'tune' the Mivec to get a very cammy idle or none at all, with stock cams or aftermarket. Wonder if the functionality is there in the LNF PCM?

 

 

Yes, its possible to tune the cams to run and sound like ****.... if thats your bag.

 

check my build thread and then delete ur post...

where is it going to be... pm me all details please!!! i woundlnt want to miss it!

 

just get a regrind or the cams hard welded and a new grind.