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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 07-08-2009, 02:34 PM   #1
Rallyman6
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Doug Thorley Shorty Headers for 2010 Camaro Installed -WOW!

I purchased the headers from Muzi Chevy and had them installed there as well.

[pic] Here are Doug Thorley Shorty headers installed..

Wow what a difference - You feel it in the seat of your pants. No real difference in idling (sound); however, under load it makes a slight difference in the sound (more rumble), and I still have the stock Cat-Back system.

The quality of these headers are the best I have seen in a long time.

A+++

Awesome. Can't wait until I get the Cat-back system








Stock Max Power = 359.12 Max Torque = 346.98
DT Shorty Headers / Max Power = 377.54 Max Torque = 381.66
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Old 07-08-2009, 02:36 PM   #2
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Nice
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Old 07-08-2009, 02:40 PM   #3
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Looks good!!!
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Old 07-08-2009, 02:54 PM   #4
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dyno numbers? whats the gain from the shorties?
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Old 07-08-2009, 03:06 PM   #5
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Nice looking, Doug Thorley headers are top quality, Are you going to get the car dynoed?
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Old 07-08-2009, 03:09 PM   #6
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Looks good. I'm still waiting for SLP to produce their shorties...so I can get a good idea for comparison.
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Old 07-08-2009, 03:11 PM   #7
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what was the price tag installed by the GM guys?
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Old 07-08-2009, 03:14 PM   #8
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Stock Max Power = 359.12 Max Torque = 346.98
DT Shorty Headers / Max Power = 377.54 Max Torque = 381.66
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Old 07-08-2009, 03:27 PM   #9
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Quote:
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what was the price tag installed by the GM guys?
2.5 hours = $246.25 Labor
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Old 07-08-2009, 03:27 PM   #10
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I plan on getting these as well once my car arrives.

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Old 07-08-2009, 03:31 PM   #11
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I did not expect to see that much of an improvement with shorties! At 4500 RPM looks like you are making about 35-40HP over stock (where the torque peaks), which is impressive. Did they do any tuning? Congrats, great results! Look great too!
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Old 07-08-2009, 03:44 PM   #12
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2.5 hours = $246.25 Labor

ty
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Old 07-08-2009, 03:47 PM   #13
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Originally Posted by Rallyman6 View Post




Stock Max Power = 359.12 Max Torque = 346.98
DT Shorty Headers / Max Power = 377.54 Max Torque = 381.66
Your talking 17 hp and 35 lb torque from shorties through stock exhaust and cats.

The Stock manifolds can't be that bad.

Something sounds off here, Not knocking DT, they make nice stuff, although it is mild steel with Ceramic coating, rust is inevitable.

We need more info here, weather conditions on before and after test, water temps air temps tuned or stock cold air kit or stock, miles broke in or not.

Please don't be offended, when you post numbers like this they need to be accurate and believable, not the highest against the lowest.
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Old 07-08-2009, 03:48 PM   #14
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Very nice ... If I go back to shorties for any reason, I'll be doing these with a complete magnaflow system.

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Old 07-08-2009, 03:51 PM   #15
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Sounds good, was there any tuning done (needed?) or were both runs on stock tuning?
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Old 07-08-2009, 04:15 PM   #16
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WOW! Those are suprising numbers. What are the primary sizes? Are there going to be CARB numbers?

More pics' please This is pretty encouraging.
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Old 07-08-2009, 04:15 PM   #17
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Quote:
Originally Posted by wh0rsep0wer View Post
I did not expect to see that much of an improvement with shorties! At 4500 RPM looks like you are making about 35-40HP over stock (where the torque peaks), which is impressive. Did they do any tuning? Congrats, great results! Look great too!
Trying to get Dyno tuned at Jannety Racing within the next 2 weeks
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Old 07-08-2009, 04:17 PM   #18
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Quote:
Originally Posted by addictedtoboost View Post
Your talking 17 hp and 35 lb torque from shorties through stock exhaust and cats.

The Stock manifolds can't be that bad.

Something sounds off here, Not knocking DT, they make nice stuff, although it is mild steel with Ceramic coating, rust is inevitable.

We need more info here, weather conditions on before and after test, water temps air temps tuned or stock cold air kit or stock, miles broke in or not.

Please don't be offended, when you post numbers like this they need to be accurate and believable, not the highest against the lowest.

I got these numbers from DT - I am going to see you guys for Dyno Day and have you do a Dyno tune.

I do not know the specifics..
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Old 07-08-2009, 04:19 PM   #19
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looks great
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Old 07-08-2009, 04:54 PM   #20
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Quote:
Originally Posted by Rallyman6 View Post
I got these numbers from DT - I am going to see you guys for Dyno Day and have you do a Dyno tune.

I do not know the specifics..
That is great I am curious to see if we can back up they're numbers.
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Old 07-08-2009, 06:33 PM   #21
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Thumbs up

Not too bad for shorties.
Now all you need is a cold air intake & if possible, the complete exhaust from the headers back & then a tune and you'd be good to go!!
Are those headers 50 state legal to pass inspections? I assume they are because they are shorties.
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Old 07-08-2009, 06:49 PM   #22
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I'm ordering them at the discounted price they are offering. I figure if they don't perform as advertised, I will be able to sell them without a loss.

I think the stock manifolds can be that restrictive. Look at what aftermarket intakes are producing on this car. Not to mention the fact that GMPP will be offering their own version of shorties.

Who knows, I am looking to not worry about emissions and potentially creating a problem with my dealer (who knows if these will or not, I'll discuss it with them prior to install). I've been down the emissions road in this state before and it isn't fun.

Maybe i'm getting old and boring.
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Old 07-08-2009, 07:44 PM   #23
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Well hell, they better have a carb sticker. I would think the only people that would buy shortie are ones that live somewhere where longtubes are illegal.
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Old 07-08-2009, 09:11 PM   #24
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Well hell, they better have a carb sticker. I would think the only people that would buy shortie are ones that live somewhere where longtubes are illegal.
well im sure this is what this is geared towards. Its very impressive gains for a shorties. I would like to see another dyno proving these gains.

If the gains are real I hope they come out with long tubes becuase the curves in these bent pipes must be laced with magic....
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Old 07-08-2009, 09:20 PM   #25
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That is top quality!
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