C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Using under hood channels for cold air

Thread Tools
 
Search this Thread
 
Old Aug 8, 2004 | 10:20 PM
  #1  
lead foot 85 vet's Avatar
lead foot 85 vet
Thread Starter
Drifting
 
Joined: Dec 2001
Posts: 1,313
Likes: 1
From: providence ut
Default Using under hood channels for cold air

Anybody try it? I'm searching for an easy way to get some cooler air to the supercharger....and as you know there's no more dam room in there............but I look at the hood and low and behold there are some box channels running over the supercharger and to the front of the vette......making a box around the filter, cut above, and make some kind of scoop afair at the front.......what do you think.
Reply
Old Aug 18, 2004 | 11:31 AM
  #2  
vvv90's Avatar
vvv90
Race Director
20 Year Member
 
Joined: Feb 2002
Posts: 11,268
Likes: 14
From: Honolulu, HI
Default

Originally Posted by lead foot 85 vet
Anybody try it? I'm searching for an easy way to get some cooler air to the supercharger....and as you know there's no more dam room in there............but I look at the hood and low and behold there are some box channels running over the supercharger and to the front of the vette......making a box around the filter, cut above, and make some kind of scoop afair at the front.......what do you think.
I know the hood on the C4's is actually a structural part of the car. I wouldn't go hacking it up or risk it cracking somewhere.
Reply
Old Aug 18, 2004 | 09:54 PM
  #3  
SBNova's Avatar
SBNova
Burning Brakes
15 Year Member
 
Joined: Dec 2002
Posts: 1,088
Likes: 0
From: Lakeland fl
Default

I did this. I can get some pics tomorrow for you, but its not the prettiest -yet. My idea was slightly different. I used a small hole saw, about 7/8, and drilled a series of holes into the horizontal header at the back of the hood to draw in air from the cowl. The air runs down the channel (near the underhood light) to the airfilter are of the SC. The structure isnt wide open, ther is X bracing in there. I also dont plan on sealing my air filter to the hood in any way. I think the intake volume would excede the airflow of the channel. I thought that if I cut a hole through the hood the filter would be soaked in the Florida rains, same for cutting into the fenderwell. I didnt want all that exhaust heat to go into the inlet, so I figured a little cool air from the cowl is better than none. I did cut a hole in the pass side of my hood to vent hot air out. Theres nothing on that side that cant get wet.
Reply
Old Aug 18, 2004 | 10:48 PM
  #4  
bill mcdonald's Avatar
bill mcdonald
Le Mans Master
25 Year Member
 
Joined: Oct 1999
Posts: 6,366
Likes: 34
Default

I had an idea for it too back a while ago, it involed picking up air from the fender gills.

What size is the blower inlet?
Could you run a pipe 1" larger then the inlet to the battery loctation?

I planned on building a box in the battery area with a flat air filter mounted in there, and picking up air from the gill panels. Sealing that air box against the fender

I picked up some gill panels to mod, I was going to make them move backwards (maybe electronically) to scoop up cold air when you are running. when you shut it down, they would slide back to the normal possition so it would not look stupid having backward facing gills.

I was also going to mod the gills so there would be about 4 gills instead of stock 2 gills.

I modded another set of gills to vent out more air. I need to go over them again as I am not happy with them, they were a real rough layout to see how they would look.

http://im1.shutterfly.com/procserv/4...dc410000001610

http://im1.shutterfly.com/procserv/4...9c730000001610
Reply
Old Aug 19, 2004 | 07:45 AM
  #5  
jerkyboy's Avatar
jerkyboy
Melting Slicks
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2002
Posts: 2,152
Likes: 243
From: Northern VA
Default

what about just running inlet tubes over the radiator shroud into the area in front of the radiator a la C5? Plus you'd have a ram air effect.
Reply
Old Aug 19, 2004 | 10:49 PM
  #6  
SBNova's Avatar
SBNova
Burning Brakes
15 Year Member
 
Joined: Dec 2002
Posts: 1,088
Likes: 0
From: Lakeland fl
Default

Sorry no pics yet, I didnt have the time.

Jerkyboy, there is no room to go forward from the air filter location on my 85, the SC and Alternator are greatly in the way. Go to Cardomain.com/id/sbnova and check out the shots of my engine- you'll see what I mean.
Reply
Old Aug 21, 2004 | 11:11 AM
  #7  
ANTI VENOM's Avatar
ANTI VENOM
Melting Slicks
25 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: Oct 2000
Posts: 2,158
Likes: 9
From: N.E. WA
Default

Bill, I think the side panels look pretty cool. I think they would be subtle, yet an enthusiast would know that they are NOT stock. I have heard others talk about using the side gills for air inlets, but I believe that it is a low pressure area while at speed. I don't know for sure, just what I've heard.

Last edited by ANTI VENOM; Aug 21, 2004 at 04:25 PM.
Reply
Old Aug 21, 2004 | 11:54 AM
  #8  
lead foot 85 vet's Avatar
lead foot 85 vet
Thread Starter
Drifting
 
Joined: Dec 2001
Posts: 1,313
Likes: 1
From: providence ut
Default

I think SBnova has the right idea..bring it down from the windshield/hood area..there's room there and that area is high pressure. the other good idea is the fender well cut outs...maybe have some kind of cover/plate to insert in case of rain.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Aug 23, 2004 | 05:56 PM
  #9  
bill mcdonald's Avatar
bill mcdonald
Le Mans Master
25 Year Member
 
Joined: Oct 1999
Posts: 6,366
Likes: 34
Default

Originally Posted by ANTI VENOM
I believe that it is a low pressure area while at speed. I don't know for sure, just what I've heard.
I think so as well. I know the sledgehammer picked up the air for the turbo in the gills. but I have read some info I am not so sure about them having issues with this area.

I would not use those gills I posted to do a cold air/semi ram air pick up.

I had another idea that involed moving gills. I built them in 3d max a while ago. I will try to find them, of just build it again. I think I can get some shots of it and show what I mean.

I think the 2 hard parts about what I am trying to build, are the mechanical piece to move the vents.
and actually getting the air from the fender to the charger. It looks pretty hard to get a pipe past the frame brace that runs to the hood latch.
Reply
Old Aug 23, 2004 | 06:39 PM
  #10  
bill mcdonald's Avatar
bill mcdonald
Le Mans Master
25 Year Member
 
Joined: Oct 1999
Posts: 6,366
Likes: 34
Default

I made a quick crappy version real quick while at work.

my idea is 4 vents, that move. with a K&N mounted behind.

Closed possition (like stock)
http://im1.shutterfly.com/procserv/4...5e180000001610

http://im1.shutterfly.com/procserv/4...df2d0000001610



Open position, to hopefully scoop up some air.

http://im1.shutterfly.com/procserv/4...df290000001610


http://im1.shutterfly.com/procserv/4...5e1c0000001610

Last edited by bill mcdonald; Aug 23, 2004 at 06:41 PM.
Reply
Old Aug 26, 2004 | 04:12 AM
  #11  
REDC4CORVETTE's Avatar
REDC4CORVETTE
Safety Car
10 Year Member
 
Joined: Apr 2004
Posts: 4,532
Likes: 7
From: Lahaina Hi
Default

Mid America hav the duct for the front license plate but when it rains look out that is what I use in front and mounted the license plate below the duct but I cover It up when it rains.
Reply

Get notified of new replies

To Using under hood channels for cold air





All times are GMT -4. The time now is 06:45 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE