I was looking at these stage 2 cams on JBP. The Dyno doesn't really show much of a gain. Do you think it will be worth it?

http://www.jbodyperformance.com/new/...catName=JP0868

 

at this time cams won't produce the kind of gains your looking for until you are pushing some real power. The cam can only be utilized to it's full potential when extra power adders are on the car allowing valves to stay open longer to take advantage of this new forseen power. Simply adding a cam to the car isn't going to wake it up.

I would wait until GM offers a performance cam. To fit on the LSJ.

 

does anyone have the cams. if so.... get some sound clips

 

How do you come up with that. I have been building cars for many years and if you ask anyone that has been to my shop they will agree. CAMS WILL help and give bigger gains on a stock car. I have a spare engine from a redline that I have been building and it is advised that you change the valve springs when changing cams.

Cams will produce more gains with other modifications of course but to say they dont help a stock car is stupid, have you even seen the stock #'s on the cams. If interested I had a reputable cam grinder check it on their cam doctor and the #'s are posted in the redline forums. The stock duration on both cams is in the 170 degree area @.050" and lift is under .400".
You may want to do more research before making a blanket statement like that not to mention the stage 1 jbp cams have a documented 19 hp gain and the gain is over the complete rpm band..

Sorry if this was an attack but.......

 

You correct in some ways but not others. On the CobaltSS, we are limited by the valve spring and PCM!!!! Both being unavailable right now, so a cam upgrade is a big waste of money for the time being on the cobaltSS. By the way, GM made 600hp on the stock cobalt cams!

 

Then why does the 300+ book show upgrades on both and I'm not going there with no gains because I am working with a cam grinder and sms (supplier of ferrea) and we have seen gains in the neihborhood of 25 horse. I know i know want to see the dyno slips, they will be provided once the final grinds have been decided on for retail.

 

And yes bigger gains will be had once the pcm is able to be messed with. FYI Ferrea makes the valve springs and titanium retainers and they are already availabe. www.ferrea.com

 

We recently picked up the entire Ferrea line, We can get the Springs, Retainers, Seat locators, and Valves by Ferrea. The entire setup is pretty expensive however. We will have them added sometime this week.

 

Yes they are, but nice peices though..

 

as far as the cams go, they have definitly been a great addition. I know the my dyno sheet doesn't show much of a gain, but thats because the all the boost that was built up was blead through the by-pass valve just after about 14.5psi ~ 100Kpa, but then i triedd the by pass valve mod, and noticed a huge differance.
i got as far as about 16psi ~ 110Kpa before i hit the Rev limiter real hard.

I'm telling you, my car is stock except the cams, and the differance is noticed right away.
the car evensounds nicer. it's got the rumble of a car with a larger engin like a V6 or V8.

When I get back home from my buisness trip i'm going to do a dyno with some minor modifications and one running the boost by-pass mod just to see what the cam is actually capable of. I'll also get a sound clip for you guy's to here what it sounds like now.

i can't wait for GM's stage 1or two, i'm sure that the programing will change the setting for the bosst by-pass to something higher then 15psi because of the larger injectors.

Thats actually why i won't be running the By-pass valve mod because i'm probably leaning out.

 

All I see on their site is stuff for the 2.2l, what am I missing for the 2.0?

 

http://www.jbodyperformance.com/new/...catName=JP0868 link to the 2.0l cam page

 

thanks but I have seen that. I want to know about the valve springs and retainers since I only want to go into the engine once and do all the work at the same time including pistons.

 

same place, JBP has titanium valvetrain stuff.

 

thanks, guess I was looking far enough

 

Too bad that stuff is so expensive and we don't have a way to tune the pcm yet. Would be sweet to rev higher.

 

I don't care if your attacking or not. Been doing this for 10 years now and an aftermarket cam to a stock cobalt ss yields little results. Sure it might up it a few HP but since we don't have adequate access to certain areas of the car we really can't open up more power. Sure it might open up a little more useable power but are you really going to feel a difference? More then likely not.

I've seen RL's dyno with these same cams and they were lucky if they got 10HP. Why go thru all that trouble just to get 10HP? Seems kinda crazy to me..

 

Then dont buy them but I am a ase cert master engine and have been doing this longer than you if you have ten years on the belt and I have the cars to prove it. Till you prove me that YOUR car wont gain then dont discourage others when you are certainly WRONG


And YES I WILL have dyno sheets and time slips to prove it.... BTW I have worked in machine shops and have a full outfitted shop with lift and everything ask swizz hes been here and seen my extra engine and the stuff I am working on.

For the ones asking about the ferrea, 2.2 head springs are able to be used in the 2.0 the spring diameter is the same and have the 1.290" installed height.

 

hey hey guy's tak it easy,

the dynos sheets seen from JBP are from my car. I'm telling you that there is definitly a difference once there installed. the car makes it to 200HP a whole 1000rpm sooner just before it its the boost limiter and the by-pass dumpa all theboost gained from the cams. which is clearly seen on the dyno sheet.

the plan right know is to limit the by pas from dumpping all the bosst from 15 back to 12, and maintain it just below that limit. thats until tuneing is available.

in two weeks when i get back from my buisness trip, I'll have the car dyno'd again and you'll see the gains, and that will speak for it self.

no point in starting an argument over it.

 

i have the stage 1 cams from jbp and saw a 12whp gain to redline... there is definately a gain, but the stage 2s' sound better. plus thats stock.

to say that there isnt' a gain stock isn't right.