Shorty Headers....

[josh1147]

Good info Tag...and way to back it up!

So has anyone utilized "shorties" on an LS3 that YOU own and can they explain their:
1. Cost
2. Performance gain
3. Athestics? (sound)
4. Opinion (we have alot of that here already)

[CamaroSpike23]

Originally Posted by TAG UR IT

"usual"
"guesstimate"
"most"


now....let me do a quick google search...

Ok...I"m done. LS1 always showed a 30 to 40 hp gain in all advertisements. I carried that over for the LS3. So far, the "documented" #'s I have seen have mostly shown 30hp.

Now....the better question is....

What kind of gains can you expect from shorties ALONE...???....????

tag, I wasnt trying to discredit you, however, most times when companies "test" their exhaust systems, they dont just bolt on the exhaust to a bone stock motor. more often than not, they have CAI and other supporting bolt-ons and tune the crap out of them as well as you posted with the SLP setup...

* +30 HP and +30 ft-lbs RWHP gain over stock system (with SLP programmer).

you CAN get 30-40 increase over stock, but not just by bolting them on by themselves.

as for gains from shorties alone? (can we add CAI and a programmer to level the playing field? lol) i would imagine around 15-20 with a tune.

[radz28]

I picked up around 30-40 RWHP with LTs on my car. I never got a baseline before the LTs; my baseline was with MAC mid-lengths, a sheety canned tune, and a couple other bolt-ons, but I got 30+ more with a dyno' tune and my QTPs - with cats'. A lot of those companies like to exaggerate their powergains though. LTs are the way to go if you can pull it off though - no doubt.

[TAG UR IT]

Originally Posted by CamaroSpike23

tag, I wasnt trying to discredit you, however, most times when companies "test" their exhaust systems, they dont just bolt on the exhaust to a bone stock motor. more often than not, they have CAI and other supporting bolt-ons and tune the crap out of them as well as you posted with the SLP setup...


you CAN get 30-40 increase over stock, but not just by bolting them on by themselves.

Oh, I know you weren't trying to discredit me, brother! I was just saying that this is what companies usually say...about 30hp. I noted below the SLP longtubes that it was w/ SLP programmer. A few other documented combos have CAI, cat back, etc. But, and I'm sorry...but when I originally said 30-40, I was meaning w/ CAI and exhaust options as well (I honestly tried to find LT's alone and only found ONE link supporting my claim +but ther WAS one+...SO HA!...>continued). I really have never heard of anyone ONLY tossing on LT's and calling it a day. You need to free up the rest of the intake/exhaust to make one major component work. I would not add LT's and leave the rest of the system alone. Of course, you know this...and I felt others would get this as well.

So...let me rephrase...

You can expect upwards of 30hp w/ a tune from SLP and 30hp from LG long tubes alone* ...29hp from other companies on LT's alone.

*claim made by LG which is documented on their site

[Crowley]

IMO .. Longtubes in the end will result in a bit more HP and TQ, but at the expence of having to do things on the emissions side to not cause problems. Are there any Emissions legal longtube setups out there? I would think a cat would have to be part of the header system as if it is part of the X or H pipe it I would think it would be to far away at that time ..

Anyhow ... Had longtubes on my 2001 SS w/o cats on my setup and got good power out of Cam (G5), Programming, LT no cats, underdrive pulleys ... 381rwhp and 383rwtq (something like that)

That being said, on my 04 cobra, I stayed w/ the stock manifolds and a high flow catted system and made plenty of power (509rwhp / 520rwtq) ..

I plan on going FI with my camaro and I think I can get by with Shorties (for a bit more flow than stock) and a catted xpipe setup .... Save me the hassle for inspection ...

As far as what companies say about hp/tq .. you ALWAYS should take that with a grain of salt

If this were going to be track only pushing BIG BIG BIG numbers .. LT w/o cats would be the way to go .... but not for my daily driver ..

Crowley

[383ss]

Originally Posted by CamaroSpike23

$635.79


and you still have to wait for LT's to be available before worrying about the warranty.

where did you get that info? did they finally release pricing on all the performance parts?

[JMAN311]

On my C5 vette I used to have I picked up 56.85hp and 52.33 ft lbs of torque to the wheels with a Vararam CAI, LG Motorsports LT headers w/ x-pipe and no cats, Corsa Touring catback system and a tune. The best part about getting these engines to inhale and exhale better is that the extra power was there through the whole powerband not just at the higher rpm's but the lower ones too. It's also really important to get the tune done so your air/fuel ratio can get mapped correctly so it stays even through the whole rpm range.

[radz28]

Originally Posted by Crowley

IMO .. Longtubes in the end will result in a bit more HP and TQ, but at the expence of having to do things on the emissions side to not cause problems. Are there any Emissions legal longtube setups out there? I would think a cat would have to be part of the header system as if it is part of the X or H pipe it I would think it would be to far away at that time ..

Anyhow ... Had longtubes on my 2001 SS w/o cats on my setup and got good power out of Cam (G5), Programming, LT no cats, underdrive pulleys ... 381rwhp and 383rwtq (something like that)

That being said, on my 04 cobra, I stayed w/ the stock manifolds and a high flow catted system and made plenty of power (509rwhp / 520rwtq) ..

I plan on going FI with my camaro and I think I can get by with Shorties (for a bit more flow than stock) and a catted xpipe setup .... Save me the hassle for inspection ...
As far as what companies say about hp/tq .. you ALWAYS should take that with a grain of salt

If this were going to be track only pushing BIG BIG BIG numbers .. LT w/o cats would be the way to go .... but not for my daily driver ..

Crowley

[CamaroSpike23]

Originally Posted by TAG UR IT

Oh, I know you weren't trying to discredit me, brother! I was just saying that this is what companies usually say...about 30hp. I noted below the SLP longtubes that it was w/ SLP programmer. A few other documented combos have CAI, cat back, etc. But, and I'm sorry...but when I originally said 30-40, I was meaning w/ CAI and exhaust options as well (I honestly tried to find LT's alone and only found ONE link supporting my claim +but ther WAS one+...SO HA!...>continued). I really have never heard of anyone ONLY tossing on LT's and calling it a day. You need to free up the rest of the intake/exhaust to make one major component work. I would not add LT's and leave the rest of the system alone. Of course, you know this...and I felt others would get this as well.

So...let me rephrase...

You can expect upwards of 30hp w/ a tune from SLP and 30hp from LG long tubes alone* ...29hp from other companies on LT's alone.

*claim made by LG which is documented on their site

another thing, when I first read thru the posts:

Originally Posted by TheClassicCarKid

how much more power do you get out of the LT's?

Originally Posted by Tag ur it

between 30-40hp. that's the usual guesstimate from most companies

I originally thought that TheCCK was asking how much more OVER the shorties you would get with LT's

Originally Posted by 383ss

where did you get that info? did they finally release pricing on all the performance parts?

they haven't released pricing, but based on similar vehicles and similar header costs, it sounded reasonable.

[camaro1]

i really dont think you need to worry about the shorty headers vs long tube's.


my s-10 with a 6.0 and L92 heads ran 10.50's on a small shot with shorty headers and a y-pipe with single exhaust.

this new camaro will have true dual exhaust with an H-pipe from the factory, the gm shorty headers and mufflers will flow plenty good