C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Air Scoop Question

Thread Tools
 
Search this Thread
 
Old Feb 24, 2009 | 10:45 AM
  #1  
lrc89's Avatar
lrc89
Thread Starter
Advanced
10 Year Member
 
Joined: Jan 2004
Posts: 58
Likes: 0
From: Bayside Brisbane QLD
Default Air Scoop Question

Is there anyone that can answer this question with a high degree of confidence? - not hear-say or myth.

Why do we face a hood air intake to the rear and not the front?
Reply
Old Feb 24, 2009 | 11:04 AM
  #2  
gerry72's Avatar
gerry72
Safety Car
20 Year Member
 
Joined: Aug 2000
Posts: 3,711
Likes: 43
From: San Antonio TX
Default

Originally Posted by lrc89
Is there anyone that can answer this question with a high degree of confidence? - not hear-say or myth.

Why do we face a hood air intake to the rear and not the front?
Placement and aero engineering design in either case are the two primary considerations. A low-rise (like say the popular shaker designs used by Ford, Chrysler, and the rear-facing Pontiac) in the middle of the hood does nothing other than allow the engine to take in air outside the engine bay. Scoops at the leading edge of the hood or the base of the windshield are more exposed to the high-pressure air. Where you can place the scoop where ever you wanted, a high-rise forward facing scoop (like pro mod or pro stock) works best over the tall cowl hoods, anyway.

But you will always be design/law limited in a street application. In any case, it won't make much difference where the scoop is or what direction it's facing if you are thinking ram air. Just not going to happen in a practical sense. You have to change high-velocity, turbulent air into the stagnant, pressurized air a ram air system needs. There's just no effective way to do that from a packaging perspective on a street car. The plenum required has to be pretty big.
Reply
Old Feb 24, 2009 | 11:35 AM
  #3  
randommj's Avatar
randommj
Safety Car
15 Year Member
 
Joined: Nov 2006
Posts: 4,449
Likes: 0
Default

Im thinking your talking about 73 and up hoods, (if not disregard this post), theres a pocket of air that circulated in front of the windshield and thats what gets pulled in through the air intake, its "cowel induction"

I hope this helps

Miles
Reply
Old Feb 24, 2009 | 12:46 PM
  #4  
lrc89's Avatar
lrc89
Thread Starter
Advanced
10 Year Member
 
Joined: Jan 2004
Posts: 58
Likes: 0
From: Bayside Brisbane QLD
Default

Thanks guys, that's pretty much what I hoped to hear. Really appreciate your prompt response to my question. Searched the forum but unable to find a diffinative answer.

cheers from down under
Reply
Old Feb 24, 2009 | 12:58 PM
  #5  
Can Am 1969's Avatar
Can Am 1969
Heel & Toe
 
Joined: Oct 2008
Posts: 15
Likes: 0
From: Connecitcut
Default Cowl Induction - it works and it is used on every car

Although relatively few production cars use cowl induction to feed the engine, virtually every car on the road uses it... to feed the heater and air conditioner.

When a car is in motion, there is a high pressure zone of air that forms at the base of the windshield. This area is tapped to feed the car's interior ventilation system. And sometimes the engine, too.

Perhaps the most common (current) application for an engine's cowl induction is on a stock car (think NASCAR). The rules for most circle track (full bodied) cars do not allow a "hood scoop" or exposed air cleaner, so the air cleaner is fed thru a plenum / intake which is located at the base of the windshield.
Reply

Get notified of new replies

To Air Scoop Question





All times are GMT -4. The time now is 02:00 AM.

story-0
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-1
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-2
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-3
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-4
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-5
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-6
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-7
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-8
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-9
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE