You're not trying to fly a car Ron.

Do all the aero mods you want on a 15 second car and see how much time it loses.

You won't see much, if any, difference.

On a drag car weight is much more important than aero drag.

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Official Cookie and Mater Tormentor.

Bingo Bagel that is why I study you so much. I wish I had A Daytona race car. Your racing buddy Possum











I Can Still Smoke Your Killer Bee Butt

Take a 19 second slant car and run an open parrachute, tell me it won't run slower. I'm not trying to argue, I'm just saying aerodynamics work at almost any speed. How much they work, as Dan pointed out, is expedential.
I do agree that removing weight will have a bigger impact.

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There are 3 things that will live forever, cockroaches, Keith Richards, and Slant Six Dusters !!!

http://s4.photobucket.com/albums/y128/slantasaurus/

take a look around

C'mon Ron, use your head here. Opening a parachute behind a 19 second car is not an aerodynamic issue.

Besides, a car that slow may not even blossom the chute.

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Official Cookie and Mater Tormentor.

Come sit on Grampas lap and let me tell you a stury.
"I used to be a bike meesenger, my first week I realized that going home late in the afternoon, up Market street, against the wind and hearing the wind on my knobby tires, huffing away, it didn't take long for me to buy some thin tires to cut through the air."
Although bikes/cars are different any little bit to cut wind resistance helps.
IMHO

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<img src="http://farm4.static.flickr.com/3173/2992308402_5481afb26e_t.jpg">

Yer kidding, right?

I mean...right?

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

In all seriousness Dan, are you going to try and make your race car go faster by hanging an open parachute on it?

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Official Cookie and Mater Tormentor.

OK, I never said a scoop was useless under 130mph. But I read in a carb book that it dosent do much for ram air under that speed, I imagine the engine rpms in relation to the air speed have an effect to ( just guessing here.) The scoop is not usless, it adds cool air which is good, in most cases. But what I read was it dosent have enough force to do much to add forced air into the engine. So what are all those scoops for on race cars? Well some of them like indy cars go over 130 most of the time, some like drag cars have blowers under the giant hood scoop, and I dont think the forced air is over coming that suction. Cold air kits that modern cars have are not ram air. Yes the vent works for nice cool air on our feet, but if you pipe it to your air carb is it really more than the engine is already taking in? And Piper Cubs fly well under 100mph also, as low as about 45-50 mph

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Grandpa's 1974 Dart Custom 4 door 225 auto, Aluminum Radiator, 1920 Holley.

Don't turn things around Dennis....

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There are 3 things that will live forever, cockroaches, Keith Richards, and Slant Six Dusters !!!

http://s4.photobucket.com/albums/y128/slantasaurus/

take a look around

Bagel did not turn anything around. You can read anything in books and it will tell you 1000 different things. If you want a trial and error down the strip what works on a slant and what doint then ask what works and what doint. I have spent 12 years racing Slants from street cars to all out drag car. I have the data. I took a 20 second 69 Dart to a 12 second 69 Dart. Thanks Ron Parker







It Aint Over Until I Win

I still think a cowl induction hood will be more effective than a GTS hood
Ya, just stirring the pot

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Chris'
Autobody
Restoration
Service

Dennis, I don't understand why we are arguing because the core of both of our statements is the same. Aerodynamics will do little to nothing to help a slow car, but bad aerodynamics can and will hurt a slow car.

_________________
There are 3 things that will live forever, cockroaches, Keith Richards, and Slant Six Dusters !!!

http://s4.photobucket.com/albums/y128/slantasaurus/

take a look around

I'm going to wait and see if anybody is still monitoring this old thread, before I spend a lot of time writing a post, I have a 70 Plymouth roadrunner that I have had for 53 years. It is air grabber equipped and I have some firsthand information that may be of interest . I have read the whole thread and find many of comments to be at least partially right and a couple of them to be out in left field For instance, you don't have to be going 190 mph before the air grabber becomes effective as far as the ram air function, the cold air is always helpful So as far as the original post, an air grabber type scoop would be helpful for cold air where the slant six in the question but it would not provide any significant pressurization. Even though there is no positive boost much below 120 mph, there is some help in allowing the engine to breathe better by reducing how hard it has to draw and therefore would probably provide a very slight benefit to the volumetric efficiency at higher speeds above 60 or so I would say if anyone is curious, I will be glad to give more specific details in depth but there is no doubt there is some boost around 140 mph.

Keep in mind the throttle plate/s, until they are just about all the way open and the engine is running fast, are a much greater restriction than anything north of the carburetor (i.e., the air cleaner/airbox/duct/scoop/etc). On a street-driven car, the main function of most "high performance" air induction systems—grabbers, scoops, shakers, K&N cones, etc—is to look and/or sound tough, not to make the car run better or faster or more economically.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.