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

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Old 07-09-2014, 11:24 AM   #101
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For optimal gain stepped headers really should be custom built for the application but they are a quality product that produces solid performance gains right off the shelf.
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Old 07-09-2014, 01:01 PM   #102
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So it sounds like either type of Kooks LTs would give me a good bang for the buck?
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Old 07-09-2014, 01:04 PM   #103
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So it sounds like either type of Kooks LTs would give me a good bang for the buck?
Absolutely.
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Old 07-09-2014, 01:11 PM   #104
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TY . Now I just have to figure out what to do about powder coating.
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Old 07-28-2014, 03:26 PM   #105
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TY . Now I just have to figure out what to do about powder coating.
Ceramic coating is what you would apply to headers. We can help you with that if it is something you want.
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Old 07-31-2014, 04:09 PM   #106
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I'm looking to pick up a set of Tri-Ys, but on the Thorley site it does not say whether or not they are 304 steel?
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Old 07-31-2014, 04:19 PM   #107
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answered my own question, they are ceramic coated to augment the fact they aren't stainless 304. got it.
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Old 07-31-2014, 07:38 PM   #108
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I'm looking to pick up a set of Tri-Ys, but on the Thorley site it does not say whether or not they are 304 steel?
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answered my own question, they are ceramic coated to augment the fact they aren't stainless 304. got it.
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Old 07-31-2014, 09:02 PM   #109
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Anybody else notice the Thorley site says the Tri-Y long tubes are for supercharged or heavily modified N/A motors? In my mind, heavily modified means cams / heads.

Anybody bolted these on with minor upgrades like CAI, aftermarket exhaust or even a TB? Just curious as to why they want a heavily modified motor with a 1 7/8" primary. Can anyone chime in?
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Old 07-31-2014, 10:33 PM   #110
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Anybody else notice the Thorley site says the Tri-Y long tubes are for supercharged or heavily modified N/A motors? In my mind, heavily modified means cams / heads.

Anybody bolted these on with minor upgrades like CAI, aftermarket exhaust or even a TB? Just curious as to why they want a heavily modified motor with a 1 7/8" primary. Can anyone chime in?
Because they also offer them with 1-3/4 primary tubes, and even they admit the 1-3/4 tubes make more power given their own dyno test. However, I suspect that at some point the 1-3/4 tubes will become a choking point, and the 1-7/8 primaries would pull away.
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Old 08-29-2014, 07:38 AM   #111
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Tri-Y headers and stepped headers are very different from standard long tubes. They do produce stronger gains but they have to be designed and built for a specific set up in order to do that. You can't just bolt up any old set of them on any car like you can with standard long tubes.
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Old 08-29-2014, 12:27 PM   #112
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Tri-Y headers and stepped headers are very different from standard long tubes. They do produce stronger gains but they have to be designed and built for a specific set up in order to do that. You can't just bolt up any old set of them on any car like you can with standard long tubes.
Can you elaborate on WHY to this? Or point me to a thread where you already did?

I ask because my buddy just put these on his 2014 and I was very impressed with them. I was considering them for myself as well, but I keep getting torn between these and a standard longtube design
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Old 09-03-2014, 08:10 PM   #113
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Can you elaborate on WHY to this? Or point me to a thread where you already did?

I ask because my buddy just put these on his 2014 and I was very impressed with them. I was considering them for myself as well, but I keep getting torn between these and a standard longtube design
Stepped headers are designed to optimize scavenging and create more power and a broader torque curve than standard straight tube headers. The stepped design is acoustically tuned specifically for their application, some math is involved in order to get it right. When the shock wave from the exhaust valve opening travels across the step it reflects back towards the exhaust valve creating a negative pressure. It's like the waves caused by throwing a rock into water, when the waves hit something like the edge of a pool, they reflect back.

When the step(s) are at the correct length for the application, this wave of negative pressure assists scavenging of the next exhaust cycle by pulling it out into the pressure drop created. The negative pressure could be something like 3-5 PSI at the exhaust valve. This is usually at tuned length of either the HP peak rpm of the engine for a drag car, or the mid-range operating rpm of a street or road race car. The Tri-Y uses similar theory but with a different approach. Placement is just as important.
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Old 09-07-2014, 07:50 PM   #114
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Im looking into headers and just wondering what your thoughts on JBA LT and HF are? Im looking on their site to find if they're 304 stainless steel and CNC bent. My other choice would be Kooks
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Old 09-07-2014, 11:41 PM   #115
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Stepped headers are designed to optimize scavenging and create more power and a broader torque curve than standard straight tube headers. The stepped design is acoustically tuned specifically for their application, some math is involved in order to get it right. When the shock wave from the exhaust valve opening travels across the step it reflects back towards the exhaust valve creating a negative pressure. It's like the waves caused by throwing a rock into water, when the waves hit something like the edge of a pool, they reflect back.

When the step(s) are at the correct length for the application, this wave of negative pressure assists scavenging of the next exhaust cycle by pulling it out into the pressure drop created. The negative pressure could be something like 3-5 PSI at the exhaust valve. This is usually at tuned length of either the HP peak rpm of the engine for a drag car, or the mid-range operating rpm of a street or road race car. The Tri-Y uses similar theory but with a different approach. Placement is just as important.
Excellent information! My buddy wound up with the doug thorley 1 7/8" Try-Y. Lets' say for example I went with TSP/SW/Kooks (basically any standard long tube design) What would I gain/lose compared to going with the DT headers?
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Old 09-08-2014, 09:25 PM   #116
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Excellent information! My buddy wound up with the doug thorley 1 7/8" Try-Y. Lets' say for example I went with TSP/SW/Kooks (basically any standard long tube design) What would I gain/lose compared to going with the DT headers?
Short of back-to-back testing the only way you can answer that is to say in general the benefit of the Tri-Y design is in the mid-range and straight tubes do better at the higher RPMs.
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Old 09-08-2014, 09:51 PM   #117
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That's pretty much what I was hearing as well - thank you for the confirmation
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Old 09-09-2014, 04:23 PM   #118
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Hey Chase i just installed Solos Mach XL exhaust on my car. And was wondering what would you recommend the next step in performance would you take without losing the warranty. I was thinking Solo High flow cats but I'm not a professional.lol
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Old 09-09-2014, 06:13 PM   #119
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Hey Chase i just installed Solos Mach XL exhaust on my car. And was wondering what would you recommend the next step in performance would you take without losing the warranty. I was thinking Solo High flow cats but I'm not a professional.lol
Is the Solo exhaust all you have done to the car? Their high flow cats will add some sound and power without jeopardizing your warranty.
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Old 09-09-2014, 06:15 PM   #120
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Yeah that's all I have done.
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Old 10-25-2014, 07:31 AM   #121
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Yeah that's all I have done.
In that case do not ignore the intake side. You should consider a good intake, scoop, and ported throttle body upgrade.
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Old 11-03-2014, 05:42 PM   #122
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I have a 2010 camaro with a Borla ATAK catback exhaust. I am looking to buy Anerican Racing headers in the near future. They are longtubes 1-7/8 x 3". Its a short connection with Cat delete pipes. Will this bolt right up to my catback exhaust? Please help.
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Old 11-10-2014, 04:39 PM   #123
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I have a 2010 camaro with a Borla ATAK catback exhaust. I am looking to buy Anerican Racing headers in the near future. They are longtubes 1-7/8 x 3". Its a short connection with Cat delete pipes. Will this bolt right up to my catback exhaust? Please help.
Yes, as long as you get the short connection it will bolt up.
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Old 11-13-2014, 09:54 PM   #124
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Mr. Chase
What do you think about the jba longtubes 1 7/8 and high flow cats
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Old 12-13-2014, 08:51 AM   #125
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Mr. Chase
What do you think about the jba longtubes 1 7/8 and high flow cats
For the money you get a better product with Stainless Power. JBA uses 14 gauge mild steel for their coated headers or 400 series stainless for the uncoated. 400 series is the same thing used for your stock exhaust so it will rust.
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