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Kooks Headers Installed

Higgs Boson

By Higgs Boson
in Engines & Drivetrain

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07Softail Senior Enthusiast

07Softail

Posted
Posted

I guarantee you lost low end torque.... I can tell your one of those that says more is better with a dual 3" dual system will be better mentality and your argumentative to boot. BTW lets see your before and after install numbers! LMAO!!!!

 

RT

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Higgs Boson Enthusiast

Higgs Boson

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I guarantee you lost low end torque.... I can tell your one of those that says more is better with a dual 3" dual system will be better mentality and your argumentative to boot. BTW lets see your before and after install numbers! LMAO!!!!

 

RT

 

just so you know, there have been many many many many tests between primary sizes on camaros and vettes and there is indeed a difference in low end torque, although it is very minor, 5 hp, give or take, but a larger gain up top, 10-15 hp, with the 7/8. it is pretty well documented.

 

my engine is going to stay basically stock except for the headers and MIT, and while I normally would go for the bigger size, my RPMs are kept lower in my truck, save for the occasional romp, which is more than occasional at the moment, haha. when i can spin the toyo at2 33's basically at will in the first 2 or 3 gears, how can i not hammer it???

 

in any case, it's not really worth fighting about. many people will not notice the difference on the butt dyno.

bigsapper Enthusiast

bigsapper

Posted
Posted

I guarantee you lost low end torque.... I can tell your one of those that says more is better with a dual 3" dual system will be better mentality and your argumentative to boot. BTW lets see your before and after install numbers! LMAO!!!!

 

RT

 

14.2 @ 99.5 before 13.9 @98.5 after.

 

My 60' went from 1.9 to 2.0. I leave at 1600 so I don't think a loss on the bottom is my problem. ;)

 

 

And I can tell you're one of those that think more exhaust restriction is more better and you're argumentative to boot.

 

 

ETA: LMAO!!!!!

07Softail Senior Enthusiast

07Softail

Posted
Posted

 

14.2 @ 99.5 before 13.9 @98.5 after.

 

My 60' went from 1.9 to 2.0. I leave at 1600 so I don't think a loss on the bottom is my problem. ;)

 

 

And I can tell you're one of those that think more exhaust restriction is more better and you're argumentative to boot.

 

 

ETA: LMAO!!!!!

Just real World Dyno experience here and how bout an actual time slip...Big Boy! before and after! My wife's Honda Pilot will hang with that!

 

RT

07Softail Senior Enthusiast

07Softail

Posted
Posted

 

just so you know, there have been many many many many tests between primary sizes on camaros and vettes and there is indeed a difference in low end torque, although it is very minor, 5 hp, give or take, but a larger gain up top, 10-15 hp, with the 7/8. it is pretty well documented.

 

my engine is going to stay basically stock except for the headers and MIT, and while I normally would go for the bigger size, my RPMs are kept lower in my truck, save for the occasional romp, which is more than occasional at the moment, haha. when i can spin the toyo at2 33's basically at will in the first 2 or 3 gears, how can i not hammer it???

 

in any case, it's not really worth fighting about. many people will not notice the difference on the butt dyno.

No fighting here just the fact's Man and Vettes and Camaros are a Total different story...trying to move a Truck is a whole different ball game from red light to red light. Horse Power is Torque carried over time. HP WILL NOT WIN ON THE STREET.... TORQUE IS YOUR KING.

bigsapper Enthusiast

bigsapper

Posted
Posted

I don't race on the street little man. My slips are posted on the internet. Engage your Google-Fu.

Higgs Boson Enthusiast

Higgs Boson

Posted
  • Author
Posted

No fighting here just the fact's Man and Vettes and Camaros are a Total different story...trying to move a Truck is a whole different ball game from red light to red light. Horse Power is Torque carried over time. HP WILL NOT WIN ON THE STREET.... TORQUE IS YOUR KING.

 

unfortunately this is incorrect.

 

Do me a favor, go outside and drive your truck, floor it and tell me as you run through first, second, third, and fourth gear, after you launch from a start, what is the lowest RPM you see? what is your average RPM? do you have more HP or more TQ at either of these RPMs? what is your average HP and average TQ number between your lowest and highest RPM?

 

to make it easy for you, the lowest RPM you will see is right after each shift. the highest is your shift point. now go get the info and get your calculator out.

 

the only time TQ wins is when you race in first gear only. after that, RPMs are up and it's all HP. being a heavy truck just means you need more power.

 

by the way, HP exists at 1000 RPM just as it does at 7000 RPM. we all know an engine doesnt make HP and it is calculated based on engine acceleration speed. but, since an engine only actually makes torque BUT it doesn't sit at a stationary RPM, we measure it as HP. So maybe what you are trying to convey but are unable, is that you think more low RPM power is more important than high RPM power in a truck. I agree with that, but not because of racing purposes but because of, well....truck purposes, which is why I went with 3/4. If you are racing, high RPM power is more important. what is confusing you is the dyno graph HP and TQ cross at 5252 RPM, because this is the denominator in the calculation from TQ to HP, not because it means anything about TQ vs HP down low or up high. you can look at the TQ line or the HP line, they work together, not either or.

 

I'm not really going to get into a big argument with you about this, I have only been racing in the NHRA and IHRA (Super Stock) for 20 years and been in the auto industry for more than that.

 

If you would like, I will give you one opportunity, not to tell me, but to PROVE to me why a Vette or Camaro is a "different story."

DanMan_S Enthusiast

DanMan_S

Posted
Posted

1 7/8" Kooks on my 5.3L. Runs just fine on my DD.

 

I did 1 7/8" on both my 5.3L and my 6.2L trucks, they work great. When I dig up the before/after dyno charts, I'll post them.

ToesonTheNose Enthusiast

ToesonTheNose

Posted
Posted

 

you can do what i do but you won't have time to enjoy your toys.

I was raised in TX I miss it. But I get it. I'm active duty. Time is precious lol

07Softail Senior Enthusiast

07Softail

Posted
Posted

HP is the affect of Torque carried over time... Always remember Torque is Quick HP is Fast. They are different for the fact that they have a camshaft that has more upper RPM and the truck has a low end camshaft. Not even mentioning the Vette and Camaro are lighter and doesn't take as much to move them There fore a truck will be more snappy with the smaller primaries on the street broadening the torque produced. I have been in NHRA and Currently in the AHDRA so I well endowed in information also. Done...

 

RT

Jon A Senior Enthusiast

Jon A

Posted
Posted

I just ordered the magnaflow 15318 today so I'll be sure to get some video before and after for you guys. it will probably be a couple weeks (if I am lucky).

 

I think you'll like it. That's the one I have with ARH headers and it sounds great--but is not "teenager loud." It's suitable for daily driving, long trips with family even towing without being obnoxious. But it gives a much better sound than stock.

 

HP is the affect of Torque carried over time... Always remember Torque is Quick HP is Fast. They are different for the fact that they have a camshaft that has more upper RPM and the truck has a low end camshaft.

 

The Corvette, Truck and soon the Camaro all have the same camshaft. The intake manifold is different as is the tuning. Otherwise they're pretty much the same engine.

 

And Higgs is right about the HP stuff all except for one thing: Engines do make HP. They make HP and torque at the same time, it's impossible for them not to.

 

An electric motor can make torque without making HP if you physically stop it. It will continue to make torque (as long as you don't burn it out) while stopped, it is producing no work and thus no work per unit time so no HP. As soon as you let it begin spinning it too is making HP and torque at the same time.

 

Since stopping a gasoline engine kills it, it's quite impossible for them to continue to make torque unless they're also making HP at the same time. :P

Higgs Boson Enthusiast

Higgs Boson

Posted
  • Author
Posted

HP is the affect of Torque carried over time... Always remember Torque is Quick HP is Fast. They are different for the fact that they have a camshaft that has more upper RPM and the truck has a low end camshaft. Not even mentioning the Vette and Camaro are lighter and doesn't take as much to move them There fore a truck will be more snappy with the smaller primaries on the street broadening the torque produced. I have been in NHRA and Currently in the AHDRA so I well endowed in information also. Done...

 

RT

 

HP is fast, TQ is quick, lol. That's like how you try to explain it to an 8 year old. Time to move on from your original understanding.....

 

And being lighter or heavier has nothing to do with HP vs TQ. All low end power does is help get you started and it has the same effect on a light car as it does a heavy car.

Higgs Boson Enthusiast

Higgs Boson

Posted
  • Author
Posted

Here is a vid of the startup with stock catback

 

 

 

 

here is an pull from in the cab with stock catback. disregard the Engine Power Reduced notification that pops up, lol.

 

 

RobZ71LM7 Enthusiast

RobZ71LM7

Posted
Posted

How do you like the fit and quality of the Kooks? I'm trying to decide between them and ARH long tubes and an offroad Y for my 5.3. I'll probably go 1-3/4". My main criteria besides performance is 100% stainless and excellent fit in the engine bay and with the y-pipe.

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