C4 cold air intake
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
In the LT1/LT4/LT5, the air intake is more than sufficient for stock, stockish and beyond, engines. My guess is that the filter system and ducting on the C4 would outflow that of a LS1 F-body.
Pro
Joined: Mar 2004
Posts: 654
Likes: 18
From: Linthicum MD
I have the claw, but, I have cut a patch out of my radiator shroud to allow the cooler air into the filters. After cruising around or racing at the track, the tubing of the claw(all of the way back to IAT censor) is cool to the touch. Throttle response was also better after the fab on the shroud.
Not to mention the sucking sound it makes. Some mistake it for a blower. Maybe that's why I can't get anyone to race.
Not to mention the sucking sound it makes. Some mistake it for a blower. Maybe that's why I can't get anyone to race.
Burning Brakes
Joined: Nov 2010
Posts: 855
Likes: 36
From: Crystal Springs MS
That has nothing to do w/cylinder head design; it has to do w/the factory air filtering system. Obviously, on the LS1 F-bod, it's a restriction -there is room for improvement.
In the LT1/LT4/LT5, the air intake is more than sufficient for stock, stockish and beyond, engines. My guess is that the filter system and ducting on the C4 would outflow that of a LS1 F-body.
In the LT1/LT4/LT5, the air intake is more than sufficient for stock, stockish and beyond, engines. My guess is that the filter system and ducting on the C4 would outflow that of a LS1 F-body.
Le Mans Master
Joined: Dec 2006
Posts: 5,139
Likes: 482
From: H-Town Texas
That has nothing to do w/cylinder head design; it has to do w/the factory air filtering system. Obviously, on the LS1 F-bod, it's a restriction -there is room for improvement.
In the LT1/LT4/LT5, the air intake is more than sufficient for stock, stockish and beyond, engines. My guess is that the filter system and ducting on the C4 would outflow that of a LS1 F-body.
In the LT1/LT4/LT5, the air intake is more than sufficient for stock, stockish and beyond, engines. My guess is that the filter system and ducting on the C4 would outflow that of a LS1 F-body.
Le Mans Master
Joined: Oct 2008
Posts: 9,758
Likes: 49
From: Houston Texas
It's also connected to a LSX on the other end so I couldn't tell you what kind of difference it would make on an L98. I always wanted one but like you I did not want to spend $300. I waited for a used one and put new filters on it. It may get powder coated red someday.
Drifting
Joined: Nov 2012
Posts: 1,331
Likes: 2
IIRC you can get a cold air system for the car for like 200 bucks for a TPI car. How much bang for the buck that is I'm not sure, but having had my stocker airbox off recently looking at it, I could see plenty of room for improvement on the internals of the air box. It's both ribbed inside (even more unfortunately the ribbing is right where the air begins making the transition from the air box to the mass air flow sensor. Right where the air induction is at it's most thin), and has 3 thick large pillars inside which would cause airflow restrictions.
http://www.mamotorworks.com/corvette-3-135-732.html
At the same time I'm getting this too
http://www.mamotorworks.com/corvette-3-135-10734.html Should turn the car into a true ram air system between the two kits I think.
I'm getting mine after I do the exhaust, and intake manifold swap on my vette.
As far as the LT1 goes I'm not sure, as I do know the induction system is a little different.
http://www.mamotorworks.com/corvette-3-135-733.html I will say this though, the metal isn't a bad thing really. I've had some experience with metal cold air kits in the past, and I've just not seen significant build up. You also know that in 24 years it won't be brittle and ready to snap into pieces should your induction get dropped on the floor.
Not that I know from experience or anything *shifty eyes*
http://www.mamotorworks.com/corvette-3-135-732.html
At the same time I'm getting this too
http://www.mamotorworks.com/corvette-3-135-10734.html Should turn the car into a true ram air system between the two kits I think.
I'm getting mine after I do the exhaust, and intake manifold swap on my vette.
As far as the LT1 goes I'm not sure, as I do know the induction system is a little different.
http://www.mamotorworks.com/corvette-3-135-733.html I will say this though, the metal isn't a bad thing really. I've had some experience with metal cold air kits in the past, and I've just not seen significant build up. You also know that in 24 years it won't be brittle and ready to snap into pieces should your induction get dropped on the floor.
Not that I know from experience or anything *shifty eyes*
Last edited by Aaron Keating; Feb 27, 2013 at 01:38 PM.
Le Mans Master
Joined: Mar 2010
Posts: 8,172
Likes: 17
From: Eugene Oregon
I believe in the Beer Fairy
St. Jude Donor '15,'19
If you going to do all that you should probably take it to the next level....
http://www.hotrod.com/techarticles/e...r/viewall.html
http://www.hotrod.com/techarticles/e...r/viewall.html
Le Mans Master
Joined: Dec 2006
Posts: 5,139
Likes: 482
From: H-Town Texas
The other thought I had/have, if I ever stroke the engine and need more air, would be to get an aftermarket CAI designed for the C6. Fitting this will require cutting the radiator shroud, as the air bridge on C5/C6 cars had a much steeper slope. I believe that because the C6 bridge couples more directly to the intake on those cars, the space between the MAF over the radiator would be similar on ours, allowing the C6 airbridge to fit. But until, I have more cubes, I can't see the cost/effort being worth it.
I have $160 in it
It's also connected to a LSX on the other end so I couldn't tell you what kind of difference it would make on an L98. I always wanted one but like you I did not want to spend $300. I waited for a used one and put new filters on it. It may get powder coated red someday.
It's also connected to a LSX on the other end so I couldn't tell you what kind of difference it would make on an L98. I always wanted one but like you I did not want to spend $300. I waited for a used one and put new filters on it. It may get powder coated red someday.
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Le Mans Master
Joined: Dec 2003
Posts: 5,768
Likes: 33
From: Van Steel Corvettes
St. Jude Donor '12-'13
My custom coldair intake. Cut lid, K&N filter, cut out bumper.
I've unfortunately never taken newer photos after I boxed in the bumper. You don't want air getting trapped in the front bumper cover as it'll cause lift at higher speed.
I've unfortunately never taken newer photos after I boxed in the bumper. You don't want air getting trapped in the front bumper cover as it'll cause lift at higher speed.
Le Mans Master
Joined: Oct 2008
Posts: 9,758
Likes: 49
From: Houston Texas
I havent tried anything else, I already had this from my previous set up ,Vortec head and HSR combo. I will tell you this the engine that is in my car made 380 RWH in the 99 Camaro it was in.The only difference is my stock 98 vette exhaust and this intake. My tuner had to add 10% fuel across the board so it is breathing a lot better in my car.We also haven't fine tuned it yet so it may make a lot more power. (crossing fingers)
Safety Car
Joined: Apr 2011
Posts: 3,660
Likes: 22
Ram air was mentioned...
not really possible unless the inlet is outside of the combo air-box that houses the condensor and radiator with that fan system that pulls air thru...not a high pressure area to induce the ram air effect. The only other way is to catch the negative airstream behind an obstruction...where? install a shaker hood and go for it.
One interesting idea that I never saw developed was to flip the stock style air cleaner, cut an opening in the shround so the air cleaner opening was facing into the airbox ahead of the condensor,, mfg new duct to get back to the MAF and TB, and install a baffle or airfoil in the nose to direct high speed air flow at the open air cleaner intake. Viola ! cram-air.
never saw anyone do that but it was discussed somewhere many yrs ago,... I guess there were too many off the rack systems available for anyone to experiment..
not really possible unless the inlet is outside of the combo air-box that houses the condensor and radiator with that fan system that pulls air thru...not a high pressure area to induce the ram air effect. The only other way is to catch the negative airstream behind an obstruction...where? install a shaker hood and go for it.
One interesting idea that I never saw developed was to flip the stock style air cleaner, cut an opening in the shround so the air cleaner opening was facing into the airbox ahead of the condensor,, mfg new duct to get back to the MAF and TB, and install a baffle or airfoil in the nose to direct high speed air flow at the open air cleaner intake. Viola ! cram-air.
never saw anyone do that but it was discussed somewhere many yrs ago,... I guess there were too many off the rack systems available for anyone to experiment..
Racer
Joined: Nov 2011
Posts: 274
Likes: 12
From: Louisburg NC
No one has mentioned the sound. My 'vette still has the stock air box with a K&N. Years ago when I got my '96 Impala SS I added what's known as the "Home Depot" cold air system. It consists of a Camaro elbow, a piece of 3.5" exaust pipe, a sewer pipe clamp (from HD) and a cone shaped K&N. I'm pretty sure it has little effect on engine performance but it sounds awsome. At cruising speed it's quiet but at WOT the sound of the air rushing into the engine is really cool. 
Do any of the systems mentioned above change the sound at WOT?
Do any of the systems mentioned above change the sound at WOT?
Burning Brakes
Joined: Nov 2010
Posts: 855
Likes: 36
From: Crystal Springs MS
Le Mans Master
Joined: Dec 2003
Posts: 5,768
Likes: 33
From: Van Steel Corvettes
St. Jude Donor '12-'13
Instructor
Joined: Dec 2019
Posts: 167
Likes: 10
From: Corpus Christi Texas
C4 air intake
Hello all, my 85 C4 has a broken bracket on the passenger side where the air filter lives. I have it held together with zip ties for now. I am planning to upgrade but based on this thread it seams like a stock intake with a smooth surface connector to the throttle body and a good K&N filter is the way to go. I have had great results on my imports with CAIs. Thoughts? My name is Mark BTW