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Old Feb 25, 2008 | 12:00 PM
  #101  
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Originally Posted by SpinMonster
The Z06 manifolds are the bottom number and the 495 is the header line. How is that 50%? The dyno is a direct comparrison between the Z06 stock manifolds and the headers.

Yeah....ON A Z06. The cars in queston here are STOCK LS2's!!!
Old Feb 25, 2008 | 12:07 PM
  #102  
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Originally Posted by C6 DVL
my 2 Cents

anyone taking the cheap way out of gaining HP by bolting/modifing "hand-me-down" parts (aka Z06 manifolds) shouldn't own or not even get into modding.........
Surely I'm not understanding this post correctly... I have a hard time believing that anyone on this forum would have the arrogance to think that he/she could "judge" just who "shouldn't own," and, by implication "should own" (a Corvette?) based on their own viewpoint(s).

Nah... that can't be what the poster meant!
Old Feb 25, 2008 | 01:06 PM
  #103  
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Originally Posted by Tom400CFI
That's one of the most retarded posts I've read on this forum.
1. You're saying buy the best or don't bother modding?? Good thing I didn't listen to you w/my first car! ('83 Trans Am). That car went from a 170 hp "wonder", to a 320 hp car that would match LS1 'Vettes at the strip. I spent $1500 on everything I did to that car, and I guarantee you, YOU would turn your nose up at most of the things I did to that car. Fact is, what I did to it was effective; it worked, and for cheap. A REAL "Hot Rodder" isn't affraid to try new things, experiment and measure the changes. Anyone can go buy big dollar parts. That takes no brains at all.
2. So you use even more retardedly expensive cars and part, to make the over price 'Vette headers seem "reasonable"?? I laugh at you! Headers are headers. They are bent pipes, welded together at a collector and a flange. They aren't worth over $1k, no matter WHAT car you bolt them to. Crazy logic, we have going on here.
I have posted plenty of retarded post/thread, this one is not it

1. if youre comparing your 83 T/A to a LS1 Vette, I beggining to see a clear picture where youre coming from, reminds of guys at the track w/fox bodies mustangs that run 11.00 and think their car is better than a 70K Z06

2. if headers are a bunch of bend pipes, then go make your own....... I never said paying $1,800 for headers is not a big deal, I said, if youre going to get headers, do it right and dont fuss around with hand-me-down parts.......do it right, do it once and get the most out of that single mod. LG Headers netted me 45+rwtq and got me to 11.84.

........................................ ..

go fabricate yourself..........a better CAI so you dont have to pay $450 for a Vararam
Old Feb 25, 2008 | 01:29 PM
  #104  
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Originally Posted by SpinMonster
15 with a tune....yes. Headers have topped 30hp/40+TQ with a tune. Also, the gains of headers are also going to pay dividends when you add more mods that increase the required airflow for the exhaust. The Z06 manifolds will eventually be a restriction. This is why cuttout s net nothing on cars with less than 410rwhp and they get you 5.5 on cars that are cammed with near 440rwhp. Its also why a Z06 wth headers gains near 35rwhp and 42rwtq gains over its manifolds that they replace.
I'm sorry but your own post are contradictory, less money for less HP, what’s the issue. Also, I was responding to the tuner that said full Z06 systems were selling for the same price as LGM street headers.
Old Feb 25, 2008 | 01:36 PM
  #105  
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This is America. You guys can do whatever you want with your cars. Im not going to try and convince anyone not to do what their going to do anyway. It would be great if you do a dyno pull before and after because we would all like to know how it worked out,one way or the other.
Old Feb 25, 2008 | 02:55 PM
  #106  
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Quote: C6DVL I never said paying $1,800 for headers is not a big deal, I said, if youre going to get headers, do it right and dont fuss around with hand-me-down parts.......do it right, do it once and get the most out of that single mod. LG Headers netted me 45+rwtq and got me to 11.84.

Wow...11.84 is that on your LS3?...on my 06 Ls2, i put weld in mufflers, tune and homemade cold air and ran 12.04 ...all for the measly cost of $525...Ill keep my $1275 in my pocket thank you very much and like every minute of it.
Old Feb 25, 2008 | 02:58 PM
  #107  
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Just like some guys are happy just opening up the stock air filters for an improved intake, Z06 manifolds are a mod.

Are they on my car? NO

Look at my mods on my list, I bought what I wanted, Mod it the way I want, cut off my mullet, and dont claim I have the best setup.

I also would not suggest that Z06 exhaust with different port design and a shorty design will compete with long tubes without more proof than what was presented here.

Look into the reason why Callaway stopped making shorty headers. That will explain alot to some and Im sure nothing to others


Life is short, get what makes you happy physically, emotionally, and financially...
Old Feb 25, 2008 | 03:07 PM
  #108  
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I have to agree with spin that I dont believe they dont do anything.

Originally Posted by 06C6FVR
Quote: C6DVL I never said paying $1,800 for headers is not a big deal, I said, if youre going to get headers, do it right and dont fuss around with hand-me-down parts.......do it right, do it once and get the most out of that single mod. LG Headers netted me 45+rwtq and got me to 11.84.

Wow...11.84 is that on your LS3?...on my 06 Ls2, i put weld in mufflers, tune and homemade cold air and ran 12.04 ...all for the measly cost of $525...Ill keep my $1275 in my pocket thank you very much and like every minute of it.
When you and I raced you went .2 quicker than me but 2mph slower...and we had the same mods other than your drag radials and your Z06 manifolds/xpipe. Your 60' was a full tenth quicker than mine (due to the DR's), so I attribute your faster ET to that, and not the manifolds.

They MAY add something, but I'm not a believer that they are a viable option to compare against longtubes.
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Old Feb 25, 2008 | 03:21 PM
  #109  
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Originally Posted by FloydSummerOf68
I have to agree with spin that I dont believe they dont do anything.



When you and I raced you went .2 quicker than me but 2mph slower...and we had the same mods other than your drag radials and your Z06 manifolds/xpipe. Your 60' was a full tenth quicker than mine (due to the DR's), so I attribute your faster ET to that, and not the manifolds.

They MAY add something, but I'm not a believer that they are a viable option to compare against longtubes.
While i agree 100% they are not the same as putting headers on, I will say for the money I spent, ($300) they were worth it to me to get 10rwhp and a MUCH better sounding exhaust note, and more than likely wont have inspection issues. I still believe paying $1800 for headers is just Ludicrous. Many have done it, but I just wont.

By the way floyd, at least you can drive...so many others out there cant!! I ran a 07 Z06 with a procharger on it Friday and he beat me by 1/2 a car, but I was at the 1/8 mile before he got to the 330 mark(guy tried using stock tires ) and Also ran an 08 M6, non z51 car 3 times, and beat him all 3. His best was 12.5

sorry to get off topic
Old Feb 25, 2008 | 03:23 PM
  #110  
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Originally Posted by 06C6FVR

By the way floyd, at least you can drive...so many others out there cant!! I ran a 07 Z06 with a procharger on it Friday and he beat me by 1/2 a car, but I was at the 1/8 mile before he got to the 330 mark(guy tried using stock tires )

sorry to get off topic
Old Feb 25, 2008 | 03:25 PM
  #111  
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Originally Posted by 06C6FVR
While i agree 100% they are not the same as putting headers on, I will say for the money I spent, ($300) they were worth it to me to get 10rwhp and a MUCH better sounding exhaust note, and more than likely wont have inspection issues. I still believe paying $1800 for headers is just Ludicrous. Many have done it, but I just wont.

By the way floyd, at least you can drive...so many others out there cant!! I ran a 07 Z06 with a procharger on it Friday and he beat me by 1/2 a car, but I was at the 1/8 mile before he got to the 330 mark(guy tried using stock tires ) and Also ran an 08 M6, non z51 car 3 times, and beat him all 3. His best was 12.5

sorry to get off topic
I will give you that...your exhaust note is certainly better
Old Feb 25, 2008 | 04:37 PM
  #112  
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Originally Posted by C6 DVL
I have posted plenty of retarded post/thread
I have no problem believing that.

Originally Posted by C6 DVL
1. if youre comparing your 83 T/A to a LS1 Vette, I beggining to see a clear picture where youre coming from, reminds of guys at the track w/fox bodies mustangs that run 11.00 and think their car is better than a 70K Z06
Roll your eyes all you want, but nowhere on this planet, did I ever say my Trans Am was as good...or anywhere NEAR as good as an LS1 Corvette. I used the comparison (of track performance) to illustrate a point which you haven't yet, and probably will never get, and that is: there is more than one way to skin a cat. Going out and dumping your wallet on bling-bling parts is one way, no doubt about it. Fabbing headers is another (and I MAY end up doing just that). Then of course, there's "junk yard parts" (I bet that phrase just makes your skin crawl. While not glamorous, or even polished (ack!), SOMETIMES, there are good, useful gains to be had from that pool. That's what I did w/my old car, and the results were great.


Originally Posted by C6 DVL
2. if headers are a bunch of bend pipes, then go make your own....... I never said paying $1,800 for headers is not a big deal, I said, if youre going to get headers, do it right and dont fuss around with hand-me-down parts.......do it right, do it once and get the most out of that single mod. LG Headers netted me 45+rwtq and got me to 11.84.
That's nice. Why don't you give me $1800, and I'll be HAPPY to put LG's on my car! In fact, I'll even do the install myself!

Originally Posted by C6 DVL
go fabricate yourself..........a better CAI so you dont have to pay $450 for a Vararam
I have. I would never pay $400+ for molded plastic, and a filter.

Last edited by Tom400CFI; Feb 25, 2008 at 04:44 PM.
Old Feb 25, 2008 | 04:41 PM
  #113  
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Originally Posted by 06C6FVR
on my 06 Ls2, i put weld in mufflers, tune and homemade cold air and ran 12.04 ...all for the measly cost of $525...Ill keep my $1275 in my pocket thank you very much and like every minute of it.
You're my kind of guy. Too bad you live so far away; it would be fun to Track, test and tune with a guy like yourself. I LOVE Bang-for-the-buck. Mostly because it just tweaks the heck out of people like C6 DVL
Old Feb 25, 2008 | 04:47 PM
  #114  
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Originally Posted by FloydSummerOf68
They MAY add something, but I'm not a believer that they are a viable option to compare against longtubes.
Again, I don't think anyone ever said that they were as good, or better than LT's. They're not. At all.

Speaking of sound Floyd, How does 06C6FVR's car sound? Perhaps he should go to my sound clip thread...
Old Feb 25, 2008 | 04:58 PM
  #115  
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Originally Posted by Tom400CFI
You're my kind of guy. Too bad you live so far away; it would be fun to Track, test and tune with a guy like yourself. I LOVE Bang-for-the-buck. Mostly because it just tweaks the heck out of people like C6 DVL
I spent the big bucks on my Corsa Sports, Kooks and CAI (Xcelerator, a clone of the Honker, albeit at a cheaper price) and HP Tuner. I am happy with them, good products all, though I think in fact its all way overpriced. Which is why I now understand when folks say "Corvette Tax". However, I did do all the installs myself and do my own tuning so I saved where I could. I see both sides of the issue and this is my higher cost story of "got banged over for the buck"
Old Feb 25, 2008 | 05:28 PM
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Originally Posted by stabori

Life is short, get what makes you happy physically, emotionally, and financially...
Old Feb 25, 2008 | 05:32 PM
  #117  
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Originally Posted by 06C6FVR
Quote: C6DVL I never said paying $1,800 for headers is not a big deal, I said, if youre going to get headers, do it right and dont fuss around with hand-me-down parts.......do it right, do it once and get the most out of that single mod. LG Headers netted me 45+rwtq and got me to 11.84.

Wow...11.84 is that on your LS3?...on my 06 Ls2, i put weld in mufflers, tune and homemade cold air and ran 12.04 ...all for the measly cost of $525...Ill keep my $1275 in my pocket thank you very much and like every minute of it.
your best is 12.14
http://forums.corvetteforum.com/show...postcount=2470
and thats with cutting 1.8 60'ft, your mph was 114 ......and thats where LG's & Vararam come in that gets you the extra 8mph at the traps and puts you (w/your great 60'ft time) in the mid/high 11's

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Old Feb 25, 2008 | 05:50 PM
  #118  
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The information gathered from this thread is that Headers (LG lt or similar) do give you a substantial gain but approximately 50% of that gain is from the tune(from Katech's educated guess). Therefore, of the 40 rwhp gained (for purposes of this hypothetical let's say the average gain is 40 rwhp), half or 20 rwhp is from the header and the other half is from the tune.

The question I have is this, a stock c6 (without any mods) can be tuned and deliver 15 rwhp. I don't think anyone will question that the z06 exhaust manifold flows better than a c6 ls2 or ls3 manifold. If the z06 exhaust manifold adds even 10 rwhp (as a result of less restrictive flow), then with the improved tune should there not be a 25+ rwhp gain. I say 25+ because there will be a 15 rwhp tuning gain anyway. There should also be an additional gain (albeit smaller) for tuning the engine to run with the larger z06 exhaust manifold.

Seems to me, the way to resolve this would be to get a stock car and 1. Dyno it.
2. Then tune the car and dyno it.
Now we have a tuned car baseline.
3. Then add headers and dyno it.
Subtract tuned car dyno from header dyno to get header gain (or loss) on the tuned car (I guess since the original tuning is done with the stock manifolds it is possible that the tuning of the car for those manifolds may actually be detrimental when the headers are put on the car and the tune causes a loss of power.
4. Now tune the car with headers. Dyno it. Subtract the value of previous dyno, then we can tell how much the car gained with the headers and tune.
Of course, if you really want to get a complete picture, we could reflash the car back to the stock tune and redo the entire operation with the exception of the tune in 2. This will serve to tell us whether the stock cars tune helps or hurts the headers.
One last thing to remember, dyno pulls, even on the same day do provide different numbers so unless all variables (engine temperature, fluid temperature etc.) are accounted for there will be certain minor amount of uncertainty over the actual numbers.

Appreciate any comments.
Old Feb 25, 2008 | 06:37 PM
  #119  
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Beanfree, I am no expert but from listening to those who are in that position will tell you that adding HP numbers of seperate mods will not result in the sum total. Rather they tend to either compliment or detract from each other.

I agree that it would be nice to see the before/after dyno runs but once again, there is something to be said for SOTP roadability vs dyno pulls.

I hope there is decent gain just by adding the improved Z06 exhaust...
Old Feb 25, 2008 | 06:40 PM
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Anymore hostility towards each other will get this thread locked. I will also be sending out vacation pacakges for those who feel like they need a rest.



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