C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

stock air box question

Thread Tools
 
Search this Thread
 
Old Jan 6, 2002 | 06:24 PM
  #1  
blkvette's Avatar
blkvette
Thread Starter
Advanced
10 Year Member
 
Joined: Nov 2001
Posts: 73
Likes: 0
From: mo
Default stock air box question

how do u open up the stock air box? or is it better to just get the modified stock air box cover from west coast corvette? i think its the same thing right?
does this mod give any extra horses
sorry for all the questions
thanks for all the help
Reply
Old Jan 6, 2002 | 08:03 PM
  #2  
SDVette's Avatar
SDVette
Le Mans Master
25 Year Member
Liked
Community Favorite
Top Answer: 5
 
Joined: Jan 2000
Posts: 5,072
Likes: 1,557
From: Poway CA
2025 C1 of the Year - Unmodified Finalist
2024 C1 of the Year Finalist - Unmodified
2023 C1 of the Year Finalist - Unmodified
2022 C1 of the Year Finalist - Unmodified
2019 C1 of Year Finalist (stock)
2019 C1 of Year Finalist (stock)
2016 C1 of Year Finalist
Default Re: stock air box question (blkvette)

I think it can be cut with a good utility knife.. Most guys switch to a K&N filter when they open up the box because the stock filter is only paper and not meant to be exposed to the elements.

If you buy a 2nd lid, you can then switch back to stock instantly if you need to.

How much power will you get? It's widely debated, and depends on model year. The 97's and 98's were very intake-restricted, and each year has been less-restrictive since. I think the best answer is probably "a few HP, perhaps 10-15 on a pre-99".

Reply
Old Jan 7, 2002 | 02:52 AM
  #3  
99 Corvette's Avatar
99 Corvette
Drifting
 
Joined: Apr 2001
Posts: 1,773
Likes: 0
From: Norman Oklahoma
Default Re: stock air box question (blkvette)

My first suggestion would be to get a Donaldson or some other high flow air box. Exit 28 has a small one for under $70 I think. If you would like to cut the stock air box instead it can be done very easily :cheers:

Jerry
Reply
Old Jan 7, 2002 | 01:09 PM
  #4  
clem zahrobsky's Avatar
clem zahrobsky
Le Mans Master
10 Year Member
 
Joined: Mar 1999
Posts: 6,744
Likes: 1
From: delmont pa
Cruise-In I Veteran
Cruise-In II Veteran
Default Re: stock air box question (blkvette)

you will need a saber saw to cut the air box lid. you can get a pretty good idea of how to cut the cover by looking in a mid-america catalog. if you do cut it i have a sketch for a water shield for the cut air box cover to keep the water off of the filter when you open the hood or wash the car. it does not effect the air going into the air filter. i can scan it to you if you wish. i have done the cut air box lid and the K&N filter on my 97,99 and now my 02 and i think it helps as much as the high dollar deals because i used a thermo couple to check the air temp at the air box at speed and it was only 3 or 4 degrees warmer than the outside temp shown on the A/C display. :chevy


[Modified by clem zahrobsky, 12:11 PM 1/7/2002]
Reply
Old Jan 7, 2002 | 06:39 PM
  #5  
silversport's Avatar
silversport
Melting Slicks
20 Year Member
Liked
Loved
 
Joined: Jun 2001
Posts: 2,565
Likes: 2
From: Chicagoland Illinois
Default Re: stock air box question (clem zahrobsky)

...Thanx...your work benefits some of us who have been on the fence or regretted not doing the cold box thang. :chevy :cheers:
Reply
Old Jan 7, 2002 | 07:44 PM
  #6  
blkvette's Avatar
blkvette
Thread Starter
Advanced
10 Year Member
 
Joined: Nov 2001
Posts: 73
Likes: 0
From: mo
Default Re: stock air box question (silversport)

yeah would u be able to scan me the pics for the water shield...also so du u think i should do this or should i just go with the donalson intake...cant make up my mind
thanks for all the help
Reply
Old Jan 7, 2002 | 07:53 PM
  #7  
99 Corvette's Avatar
99 Corvette
Drifting
 
Joined: Apr 2001
Posts: 1,773
Likes: 0
From: Norman Oklahoma
Default Re: stock air box question (blkvette)

I remember seeing a chart with the Donaldson filter element and a K&N element and the stock element. The K&N is a cotton filter which is better than paper but the Donaldson is a synthetic filter which is even better. The Donaldson flowed 1.4 times as much air as the K&N with the same surface area. I wish I could find the chart now. The Donaldson air box also has much more surface area than the stock air box even when cut. I took all this into consideration when I was shopping for an air box. I would say the Donaldson is well worth it. Post a WTB ad in the for sale section and you might find a used one for cheap :cheers:

Jerry
Reply
Old Jan 7, 2002 | 07:57 PM
  #8  
99 Corvette's Avatar
99 Corvette
Drifting
 
Joined: Apr 2001
Posts: 1,773
Likes: 0
From: Norman Oklahoma
Default Re: stock air box question (clem zahrobsky)

it was only 3 or 4 degrees warmer than the outside temp shown on the A/C display. :chevy
You are forgetting about the ram air effect you get with bottom breathers. There is a high pressure area in the cavity that the bottom breathers go in. I do believe they offer slightly better performance but the number difference is too small for me to cut the radiator shroud and call me stupid but I wouldn't risk hydrolock either.

Jerry
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

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

 Michael S. Palmer
story-1

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

 Joe Kucinski
story-2

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

 Joe Kucinski
story-3

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

 Verdad Gallardo
story-4

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-5

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-6

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-7

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

 Michael S. Palmer
story-8

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-9

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
Old Jan 7, 2002 | 08:06 PM
  #9  
clem zahrobsky's Avatar
clem zahrobsky
Le Mans Master
10 Year Member
 
Joined: Mar 1999
Posts: 6,744
Likes: 1
From: delmont pa
Cruise-In I Veteran
Cruise-In II Veteran
Default Re: stock air box question (99 Corvette)

some one posted that the ran effect comes in at over 120mph.
Reply

Get notified of new replies

To stock air box question





All times are GMT -4. The time now is 12:20 AM.

story-0
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-1
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-2
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-3
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
story-4
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-5
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-6
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-7
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-8
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-9
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