ive heard a lot of people saying how its one of the first mods that should be done. is it worth it? and since i dont really have many rattles what would be some other advantges?

 

Hate to just limit my words here, however the mods are getting annoyed at the multiplication of slightly different threads, so I'll inlclude these so you can decide. It's up to you how you'd read them, but my suggestion would be to read all fo their contents from an objective viewpoint.

https://ls1tech.com/forums/suspension-brakes/398983-subframe-connectors-2pt-vs-3pt.html
https://ls1tech.com/forums/suspension-brakes/417461-sfc-s-bolt-vs-weld.html

If you get what some of the critics are saying, they're not useless, just depends on what you're doing with the vehicle now and eventually. Now for my 2 cents:

The only thing they will do is to strengthen and/or stiffen up the chassis where they're mounted, not remove/reduce NVH, and not improve handling by a great amount that your Seat-of-the-pants can detect. Most of the "looseness" detected through the Seat-of-the-pants is mainly through lousy shocks. The NVH and/or handling improvements many claim are mostly placebo from what's been stated so far. If you want to get rid of the NVH, first determine where it's coming from, then resolve it by fixing the problem directly. If you have interior rattling, check the interior for loose panels and loose foreign objects. If you have something creaking from underneath, check the bushings and/or mounts all around the vehicle because bushings are wear heavy items.

If you think your handling is like dookie, then resolve it directly by considering a different set of shocks, springs, and/or stabiliser bars, well designed ones I shall add. There are several decent sponsors here, however Sam Strano is very popular for suspension mods for several good reasons. If you perform a search for his name, you'll see what he knows is based on direct knowledge and very good experience.

Yes, every car needs a stiff chassis, however the 4th gen musn't be confused with a bevy of "primitive" designs from the various GM vintages before the 4th Gen camaro arrived. For the mods you listed in your sig, you can do without SFC's for now, however if you decided to upgrade to lots of HP, drag race, purchase a floor mounted torque arm, have a full convertible, or are doing some type of competition where you're constantly having to jack lift one corner of the vehicle, then you might consider a type of SFC that could easily satisfy your need. I have a T-top equipped vehicle and when I had my SFC's installed (several sets bear in mind), it didn't resolve the extremely slight flexing from the T-top panels, so I had to devise a one piece aluminium panel retrofit that can temporarily replaced the T-tops when needed.

Again, I will leave it up to you.

 

I felt a differnce in the car as soon as they were welded in, tighter, and hookep up a little better, but foxxton is right,they aren't bandaids, or won't replace a good set of sway bars,shocks,etc.$th gens are much better, but could be stiffer-I notice them more over speedbumps and large bumps in the road- the car is just more solid feeling

 

This is my opinion and some opinions of others:
www.ls1tech.com/forums/showthread.php?t=423517

 

I have em.. but they are only really good for peace of mind... (i.e. hopefully eliminate creases in body panels and reduce squeaks)

I have them, do i expect so see performance gains.. no

A different set of tires would have a far greater impact on handling than SFC's... this is more of an insurance/sleep-at-night mod.

I'll be the first one to call BS when they say their car actually handles better, or increased cornering G's. do you think SFC's modified the contact patch in any way, what % stiffer is the chassis?

Torsional stiffness of the chassis only has to be a Certain % above the roll stiffness of the suspension and the F-bodies are above that from the factory. However, with stiffer springs/roll bars etc.. the roll stiffness went up and therefore the required stifness of the chassis likewise has gone up (its not really required, but basically the point where the chassis has minimal impact on suspension geometry)

All i can say about this, is that "point of diminsihing returns" comes to mind.

but then again.. i have them.. so do what you want.

 

Looking at Kenney Brown double diamond SFC i see the possibility of some benifit. But give your head a slap for me if you bought a 5 foot piece of pipe with a couple of tabs welded on for about $120.00 and you think they will do much of anything. You get what you pay for.