Cobalt SS Network - info on cams

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hi i want to know if any one here knows if there are any cams besides th jbp cams.....if not how well are the jbp cams.......also if i where to get cams could i run my stock cam gears or would it be best to replace them.....

Yes, you can get the stock cams reground

Lot of people lately have been going with the 272 regrind. And your better off replacing your cam gears.

zzp ecotec cams and they say you can use stock valvetrain

Quote:

Originally Posted by InfinityzeN (Post 2322163)

Lot of people lately have been going with the 272 regrind. And your better off replacing your cam gears.

if you haven't seen a 272 dyno graph compared to a stock cam graph. you wouldn't be saying that

not a big fan of the 272 cams...i have jbp's in mine..they are way pricey tho

I've gotta find someone who wants to sell just an exhaust cam.
I'm going to give the good old 272/264 a try this fall (on stock cam timing)
Less duration on the exhaust side, but i have a feeling that the decreased overlap could benefit us. ;)

^^^^ like he knows anything :)

Quote:

Originally Posted by Area47 (Post 2322948)

272/264

newb

:)

LAWL.... my bad... typo... :lol:

im quick to point the obvious
:)

Quote:

Originally Posted by advise (Post 2322438)

zzp ecotec cams and they say you can use stock valvetrain

interesting would like more info on these, are they new?

there by gm the where just add to the site

thanks 4 the info......

Quote:

Originally Posted by Area47 (Post 2322863)

if you haven't seen a 272 dyno graph compared to a stock cam graph. you wouldn't be saying that

Till now not seen any dyno graph of 272 cammed LSJ... (or any cammed LSJ compared to stock cams that is...)

Enlighten us Area47. ;)

Quote:

Originally Posted by Raven SS (Post 2322920)

not a big fan of the 272 cams...i have jbp's in mine..they are way pricey tho

Indeed. How do YOU like them? ;)

Quote:

Originally Posted by racehtecobalt (Post 2321870)

My JBP Stg2's are for sale WITH the Valve Springs. Never installed. $550 shipped for Cams and VS's... that's a fuggin deal.

My JBP Stg2's are for sale WITH the Valve Springs. Never installed. $550 shipped for Cams and VS's... that's a fuggin deal.[/QUOTE]

why you sellin? that is a sweet deal, thats like 50% off lol

he cracked his tranny and needs money

Quote:

Originally Posted by Omega_5 (Post 2322943)

Umm, I think you mean 264/272?

Less duration exhaust side works against you on a supercharged car, I think you mean less on the intake side.

Quote:

Originally Posted by Witt (Post 2328448)

Umm, I think you mean 264/272?

Less duration exhaust side works against you on a supercharged car, I think you mean less on the intake side.

Nope... I mean more on the intake, but less overlap so we have less blow though.
I believe we'd be dealing with 2 degrees of active overlap with a 272/264.

Really, it's not my idea... but the numbers looked so promising, that I said I'd try it one day.

As it was proposed to me;

Quote:

We are limited by the problem that we are forcing air into the engine, but have no limitation on the exhaust side (as in no turbo to resist the exhaust flow).
Our solution, is to decrease the amount of blow though, due to valve opening overlap.
Let's experment;
272/272 cam profile is obviously where the problem starts. Running too much boost will simply set you back as your just blowing though a fair amount of useful air/fuel.
Try a 264/272 profile. The LSA on this combination is 3 degrees, and considering the profile of each cam, you are left with about 13 degrees of over lap. Obviously this system isn't too much of an improvement over the 272/272 combination.
Now try a 272/264 profile. The LSA on this combination is 4 degrees, and again considering the profile of each cam, you are left with 10 degrees of overlap.

This combination will provide a longer fill period, as well as taking advantage of the higher cylinder pressures on the exhaust side. The 264 profile tends to promote a more broad power band, including a strong mid range, as well as taking advantage of the higher flow and boost pressures at the top end.

There's more.. but that's the jist of it.

thats why i dont like the 272s...been seeing alot of intake charge being loss with the duration..no one seems to think so tho

cam gears would be a better end route on the 272/272 set up
:)

Quote:

Originally Posted by Area47 (Post 2328578)

cam gears would be a better end route on the 272/272 set up
:)

best statement i EVER heard when using 272 in it...

retard the exhaust cam 2-4 degree's
:)