cobra intake over stock. please read
 

Does cobra intake alone produce some difference in hp over stock? I intend to add heads and tb later, not money to do it at once.
Thanks for aid, waiting the answer to make a deal...

I've asked the same question before and I think the answer is not really. BOTH the intake and heads suck. If you swap the intake your heads are restricting you performance. I'm sure you'll get some small gain, but nothing large.

I put a ported stock intake on my car with NO other changes and it picked up .4 and 4 MPH in the 1/4mi. Later I added my C&L 73mm to it and it picked up 1 MPH more. I know a unported Cobra intake is better than my ported stock. You shoud pick up about 25 HP with no other changes.

LOL, every time I ask/hear something I get a different answer. :o :D

Oh well, maybe one day I'll get an intake :) :o :D

I'm actually really curious about this as well.
I was also wondering how much a cobra intake goes for. I'm sure you guys know.

You should read my speed secret number three post carefully, and understand that the port runners on the EFI engines are tuned to produce a torque curve in the rpm range of the vehicle's intended purpose. So a stock engine will tune max torque to 3300 to 3500 rpm.

On a cobra, they want a longer and broader torque curve, so it is tuned to 3300 to 3900 rpm. Since horsepower is "MEASURED" by taking torque, and rpm and dividing it by a constant, you can see that the Cobra manifold is intended to shift the torque curve up higher in the rpm range, where us sports fanatics love to hang the revs. That is what generates the higher horsepower on the Cobra cars. More torque, higher in the rpm range.

If you want to race, even the Cobra intake is limited. Edelbrock and TrickFlow make a rectangular port intake good to 6,000+ rpm and capable of generating some impressive horsepower levels.

With a stock cam, and a stock compression ratio, and a cobra intake, DON"T EXPECT MIRACLES. Your computer's algorythems are still set for the stock cam profile. The computer doesn't "SEE" the intake at all, so it does not adjust richness at upper rpms to produce the horsepower the intake is capable of delivering.

This is why I do not personally build EFI cars. They are fine mind you, but when I can get 400-500 HP easily from a stroker kit and a carb, why dinker around with computers, eproms, super chips, sensors, and the like. They add 4,000 dollars to the cost of the engine and supply just a little more torque in the midrange and maybe 3-5 mpg more at street driving speeds.

I just nail the pedal and hang on for dear life....

Some like it simple .... he he he

Hope this helps and you are right to laugh about all the bogus horsepower and time claims. I add or drop more than a .1 second at the track due to bariometric pressure (weather) and track temperature!!!!!!!!

Gotta love the guys for at least responding, but take it all with a grain of salt. To really take advantage of the Cobra intake, you need a bigger MAS and better flowing ports and valves. You need higher compression. The biggest seat in the pants improvement is when you change the cam to a B or E roller cam.

All these changes together make for a 12-13 second car.

With STOCK heads?? (I'm assuming when you say 12-13 second car you mean high 12's, low 13's)

Let me clear all of the bull sh#t out of the air. If you change to the cobra intake with the stock heads you will gain about 10 HP at the engine.

Akbar00--------Did you have the stock heads still on there when you changed intakes. I am not going to call you a liar but if what you say is true your results are not any where near typical.

mis-information is starting to be the norm on this site.

mis-information? Dude, everyone posted almost exactly what you said, the only exception was Ackbar, and if he saw those increases, then, that's what he saw! I agree it probably wouldn't be typical, but...

I apologize.. Akbar00..I am in an overall bad mood today cause I have worked 20 days straight and was just informed I have to work this saturday and maybe I can have Sunday off.

Who am I to talk anyways I knocked off 6 tenths and picked up 4 mph when I did my exhaust and noone believes me;)

Later,

Ok, I left a little Info out. I had a full exhaust system(same one that is on the car).It still had the stock heads and cam though. That same intake on my brothers turbo 88 GT went 10.90's @124. It was heavy ported. But I dont think he should buy a new Cobra intake. Almost any other will out flow it and make more power. Get the Performer, Holly or Trickflow Trackheat. They cost near the same and make more power than the cobra. Unported to Unported. It alright Dark 5.0, It get pissy myself:cool:

Thanks for the replies, it was fun to read it. I´m a little devoted to the Ford parts, but for sure there are other brands which may offer more for the same. I´ll think carefully about it, but the greatest thing is we have a lot of options to choose from..
Thanks again

Dark 5.0 is right, an increase of around 12-17 horsepower, AFTER the Bull$hit clears............

Been there done that several times........

Jay

So whats the bullshitt?

I like my cobra, when and if you buy heads, the cobra can be ported or sold. I made a good gain porting a stocker, I also gained when I got the cobra, I also gained when I ported it. Remember one thing, every little bit helps. If you gain one hp, it's one more than you had before. Also more important than what you buy, is what you do, with what you buy. I have a $400.00 junk yard motor, My best friend has $3000 of bolt ons on top of a stock bottom, we run close to the same at the track, go figure that one. Look at Jim Chambers 11.00s with a set of GT-Ps. Dude, the cobra is quite alrite. Good luck

I believe you Dark_5.0. You can pick up huge time improvements with proper exhaust tuning. Read my speed secret number four thread and you will see exactly why it is happening.

I know you guys like to take hp and torque off a flywheel and say this gets you 10 horsepower. But honestly guys, its what you increase at the rear wheels that makes you faster. Adding a cobra intake on a perfectly stock engine makes 3 to 5 extra horsepower at the rear wheels, and about a tenth or so improvement in times because that extra torque goes across a higher rpm band that is meaningful to your et times. So if you are getting 10 to 12 horsepower you are doing other stuff too.

But hell, I usually make three changes all at one time too.