Ram Air vs K&N
Again, I've ran all 3 setups and will probably go back to the LT1 WS6 setup if I can can make it seal somehow with this '98up WS6 hood.
I can kneel down, look into my hood , and see my throttle blades. The intake air doesn't turn, pass in front of my radiator, etc. It goes straight into the front of my hood, travels approx. 8" before hitting my TB blades head on. Absolutely zero restriction and that tract is also sealed off from everything else.
As far as ram air, I don't know, however---
I know I had a helluva time tuning my KFX700 quad a while back because it ran awesome at any throttle as long as I was under about 30mph. Once I got over that, it would run like total ****. Finally figured it out, The ram air hitting the carbs over 30 mph was causing it to run lean and break up at really anything over 20% throttle.
I had cut out a hood vent that allowed it it to happen. I had to block the opening into the airbox so that the air could not be "rammed" in. The air now rammed into a wall, then around and into the airbox. Problem solved, runs perfect up to 80mph with the same jetting now.
Last edited by fireman; Dec 28, 2007 at 09:40 AM.
since a lid is similar to the ws6 ram air box just upsidedown i will go back to the lid set up when i get my new hood
. Of course you should have me "covered" - look at all the crap you have on there! Does not change the fact that you have a mid-high 10 second car still in the 11's
Seems like you did your homework, but can't get it all to the ground!Taking shots at my car is useless - it runs pretty well for what it is...a tired old DD LT1
***BACK ON TOPIC***

What my car runs has nothing to do with the fact that ram air is almost useless on a street/strip car. If those nostrils were facing backwards or sideways you would run the same times and make the same power in the 1/4.
For the record I did not take a shot at YOUR car until you took a shot at mine, with the 300lb weight difference in the cars you would not even BE in the 11's. carrying 3800lbs.LOL!
When you build a 10 sec car, we will talk. Mine is a 10 sec car...I got one more trip to the track and I will have acheived it.
David
And yes ram air does work. If it didnt certain 10.5 and drag radial classes would allow forward facing scoops. I cant think of the exact class off hand, but a certain Mustang class states "no forward facing scoops". Its street car class. It HAS been PROVEN time and again that with a sealed, forward scoop you will lean out up top and need to re-tune. Like Fatboy said, if you cant figure that out, well then, thank you for being so ignorant as to let us be faster than u! We've tried to help you figure this out, but you cant comprehend. So thank you for letting us be smarter and faster.
geez.
burnzilla
i understand your point The Ram Air does NOT force air into the induction system especially at idle...
the whole trick to the induction is a short distance to travel with the least amount of heat absorbed from the engine compartment.
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The debate was about it being useful in a STREET CAR only trapping in the 120's. All that professional pro stock crap is USELESS in this argument.
If you believe an 11 second car will get a huge benefit from two little nostrils "ram air" effect, maybe you should ditch dyno tunes and prochargers for Hypertech's and electric "turbos". They claim TONS of benefits too
.https://ls1tech.com/forums/showthread.php?t=836138
^^^^^^^^^^^^^^^
In particular pay attention to our very own Nine Ball's post: :https://ls1tech.com/forums/showpost....64&postcount=9 <-TESTED
/thread.
And yes ram air does work. If it didnt certain 10.5 and drag radial classes would allow forward facing scoops. I cant think of the exact class off hand, but a certain Mustang class states "no forward facing scoops". Its street car class. It HAS been PROVEN time and again that with a sealed, forward scoop you will lean out up top and need to re-tune. Like Fatboy said, if you cant figure that out, well then, thank you for being so ignorant as to let us be faster than u! We've tried to help you figure this out, but you cant comprehend. So thank you for letting us be smarter and faster.
geez.






--Alan
1) The air is only travelling about 12" total from outside through baffles into TB (this is approximate because Ive never felt the need to measure my intake length). This air never mixes with engine compartment air and as a result will be at the same temp as the ambient air because the airbox is sealed to the hood.
Regardless of any ram effect or not cold air = more power.
Despite everything else air travelling 12" inches straight is less restrictive than air travelling like 3' through 2 90*bends.
Less restrictive and colder = more power.
2) Now onto the ram effect. You will not notice anything on the dyno, period. The CAI will make more power on the dyno than the stock intake because it is less restrictive and should be pulling cold air from in the fender well or under the car.
Now about the whole you have to be travelling 4,000,000mph to see any benefit from the ram air setup...
If you draw a simple force diagram (everyone took a high school physics class at some point I am assumming), you will quickly realize that the force of the air getting pushed into the airbox (causing it to pressurize slightly) does not have to "overcome" what the engine sucks in alone. They are complementing forces not opposing.
Example if you engine sitting still and free reving (or dyno) sucks in air at 30mph (just an example) the air is moving in this direction:
outside ----> TB @30mph
Now taking the same example with the ram air setup and lets say the car is moving at 60mph you add the forces together because both of the forces are moving the air in the same direction...not against each other.
outside air ----> TB @30mph (what the engine does on its own at the same RPM)
+
outside air -----> TB @ 60mph (because thats how fast the car is moving towards the air or in effect if you were sitting still on a dyno inside of a wind tunnel with the air blowing at the car at 60mph...same thing).
= outside air moving into the airbox at 90mph (in this example). Simple physics.
Now if you were going 60mph in reverse then yes you would have to subtract the forces.
As to what this actually does in practicallity is with the airbox completely sealed to the hood the air pressure inside the box will be slighly higher than in a setup not sealed to the hood as in a CAI by the fender. So when the TB blades open the air naturally goes the direction of least resistance, so when the car is moving forward this is into the TB rather than relying solely on the vacuum created by the motor.
In conclusion, sorry for the long post, compared to a stock intake both the CAI and the RAM will make more power.
The RAM will make less on a dyno, but be slightly more efficient when driving.
So to get the best of both worlds between say at K&N CAI and a RAM...do this:
Get a K&N high flow filter drop in and put it in you RAM airbox. The key is the box must be sealed to the hood (otherwise it isnt a form of a CAI because the air isnt getting rammed or coming from outside...its coming from inside the car).
**Disclaimer I am strictly referring to the LT1 WS6 intake setup when referring to RAM as I have no personnal experience with either the LT1/LS1 SS or LS1 WS6 setups.
But I have not SEALED it to the hood yet. I don't know where to buy the factory seal, so I'll have to make my own I guess.. this is a question i am just wondering Im new to all this





