5.7 Air Intake... has any one noticed?

[bartlanz]

I was playing around in the front of my truck with the grill off yesterday and I noticed that there is basicly a factory CAI on my truck.

 

From behind my passenger bumper light there is a tube that goes into my front corner panel where the stock filter pulls air from.

 

The amount of travel needed for bugs and stuff to get to my air filter is extremely long, I can't beleave that I get large debris on my stock filter.

 

Is there any company that does any thing with this after market wise to improve the intake system? how much of a difference does this thing make?

[Ben]

Ditto on mine, but 1996 GMC Suburban 3/4 ton 7.4L engine.

 

Decided could do better than the stuff saw in ads and did it for less than $20 bucks and about 4 hours work. Think can do it in less than 2 hours now after doing it once.

 

Here's link to text article wrote up and posted over at the Suburban forum. Buddy pulled it to his site at: My cold, ram air modification article

 

Here's some pictures if interested:

 

 

 

 

Accident messed up above scoop, so made new one with larger/better scoop and is what's on now

 

Plus you can use a larger, heavier duty filter. Standard and HD are both available from GM. Bought my HD from NAPA and is picture below. Can even put in a K&N filter if you wish...the one made to fit into stock filter box.

 

[bartlanz]

LOL, I am going to have to price that out, and examine my truck to see if it will work! That is VERY creative!

[hercman]

Beware of placing the inlet that low to the ground. Water ingestion is an engine killer. A few people with Grand Prixs who made a Fender well intake ruined their engines by driving through a "small" puddle and sucking in too much water. The best place I've seen is by trying to pull the air from behind the headlights.

[Rookie]

I would have to say Ditto to How low it is mounted. I just bought a KNN replacment filter ( which is held on by a clamp) and removed my Factory air box lid. I did notice a slight increase in power and MPG. The biggest thingt is the cool sound it make when i jump on it. Sounds like an old 4Bl Carb with the air cleaner lid flipped over!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.

[Dustin07]

The biggest thingt is the cool sound it make when i jump on it

 

definately. i bought the whole kit for $250-ish 3 years ago when i first bought my 99 4.8L. as i was cleaning the filter again last night for more continued service i was thinking about how happy i was with the investment. it may or may not have paid for itself by now... (i'm pretty sure it actually has in mpg) but the sound is awesome, and it's cool to look at when you pop the hood

[Ben]

Beware of placing the inlet that low to the ground. Water ingestion is an engine killer. A few people with Grand Prixs who made a Fender well intake ruined their engines by driving through a "small" puddle and sucking in too much water. The best place I've seen is by trying to pull the air from behind the headlights.

In the article text said left the OEM in place.

 

Meaning if ever get the under bumper scoop under water, the OEM intake routing will be above and air will be taken from that, not the new under bumper.

 

Plus, since I know it's under the bumper chin, know not to get it under water with much speed. Have a Nerf ball that one of my buddies shoved into it first month after...funny...but turned out to be good idea and kept it in the console for just in case have to cross a stream or something. Don't take the Sub off roading, seriously like did the K5. Too big and can't take the cut backs with such a long wheelbase (it's a whale out there).

 

Another is that the hose and fittings used were not glued, but left as is. Drainage hose and meant to be loose fitting, so won't be air tight enough to hold water. Thought about taping the joints with duct tape or glueing them, but since I find tons more stuff inside the filter box. Even rocks. Says the scoop works well, as never found this amount nor kinds of things with the OEM system.

[Ben]

Look at the other designs and how they "try" to seal out engine compartment heated air.

 

Haven't seen one that did a good enough job.

 

Heated air has higher chance of pre-ignition and the computer will back off the timing..aka less power and MPG.

 

Colder air best and coldest is outside the vehicle, unless a AC system, but then the parasitic losses out weigh any gains.

 

Anyway, just wanted to post something different and costing less. Not cheaper, costing less.

 

Mine looks absolutely stock from the engine compartment, but when someone sees the hoses and scoop, usually get either honk with thumbs up sign, or ask what the heck is that feeding....7.4L or 454 cubes helps fuel the allure...

 

PS....have tried the K&N and the increased sound fun, but the potential for harmful particles offset so that am back to the larger heavy duty OEM filter. Though less but still has that great WHAAAaaaaaa intake sound at WOT...

[hercman]

Just tryin to keep people thinking about things they don't normally think about.

[Chris97K1500]

I'm in the process of relocating my Battery to the driver's side, I bought 0 gauge wire 5ft long, just haven't had time to do it. I'm getting a 6" to 3" rubber boot in the plumbing section at Lowe's. I'll be putting it right behind the passenger side lights then just run 3" black PVC with an elbow up into the stock box. Should get plenty of cold air, plus, don't have to worry about going through the creek on the farm and getting water in it since it'll be in the same location as factory. I'll get some pics up when I finish it. Probably will be this Thurs/Fri. To keep the engine air out, I'll be using a rubber liner material and use silicone to seal around it where the 6" rubber end will be behind the lights. No engine heat can get around it. Chris