This made the most sense to me?



Here is my intake to go with it. I made this by cutting a mandrel bent 3" 90 into 2 pieces and welding it.



another shot..




And Finally my Beast of burden...


..

Looks good! One of these days I'm going to do the same thing.


So is that PVC tube coming out of the air box a snorkel? How and where did you route it?


How does it run now? Notice any performance increases, or sound increases?

Help me out here. What is the advantage of that vs. the stock rubber part?

I agree. What advantage is there by replacing the factory plastic "air filter to throtle body" tube.

And I see the black PVC tube coming out of the lower air filter housing is used for cold air ducting, but it is probably in a bad place for water to enter the intake tract. The factory ones mount behind the headlight. I have also seen some mount where yours is, but suck air 90* from straight on. Both of these will help avoid water being splashed into the intake.

I believe it removes the restrictive elbow system of the stock intake which has sound baffles designed to quiet down the intake sound. Removing them and using a straight pipe allows better and more air flow to the intake.

You are worried about water being splashed on the intake with a little pipe? I'd be more worried about my setup... just some little metal clips to hold the aircleaner together.

Nice intake man, hope it does well for ya! MY only worry is that pipe is also ment to flex with the engine.... where is it going to flex now?


Josh

Well it has what looks like rubber connectors on both ends of the t-body pipe, perhaps those have enough play in em to account for engine movement?

the junctions are 2.75" to 3" hump hose adapters (these get heavy use in large diesel engines) designed to move when the engine twists. I thought thay where a nice addition since just about every home grown intake I have seen so far uses 3" radiator hose with some sort of bushing. I will probably switch the one connected to the AFM to radiator hose when I put a larger AFM in with a 3" OD inlet.

I did away with the stupid air injection system for the exhaust. It was kinda unsanitary with the headers and made my truck sound like a diesel (very loude after headers) aside from floating around a bit as well. the EGR valve was causing me a big stumble about 3k RPMs and I only run super so there is no detonation problems. Once I took those 2 items off then the extra openings (including the 1" one) on the stock intake and air box baggage was no longer needed.

The Air box mod is to reduce any resistance that may be caused by having the plastic tube behind the headlight being a limiting factor for air induction. I have looked at all the other other different types of air box mods including drilling the crap out of the bottom,Putting in a deck plate and even the all too usless K+N cone filter sucking hot air from under the hood. Im not concerned about water as there is a drain hole in the bottom of the air box and I dont feel the need to wheel heavily yet. Its not the only source of air its actually a smaller secondary source to the one mounted behind the head light so the actual amount of vacuum on that smaller tube is minimal except under hard acceleration at WOT. I decided to put it in when I was doing some tuning and noticed when I was accelerating the engine rapidly it was having a substantial affect on the air box and also the little tube behind the head light due to the amount of vacuum being generated.

I spent alot of time porting my upper and lower intake along with getting ported and polished heads and performance cams. I also use downey headers and a 2.5" exh from the headers on back including a 2.5" cat and a flowmaster 40 series.

My goal one this little part of the project was remove any restrictions from the T-body forward. Once I get the AFM sorted out I will have removed any restrictions and will move on to overboring the T body.

If you're gonna bore the T-body, then ya oughta look into getting/making a bigger airbox. I have been told many times that EFI engines like to pull from a large stable pool of air. A friend of mine that races short track crams a huge airbox in his racer.
'Course I have a 4banger, and this may not apply equally to your engine. <img src="/forums/images/graemlins/smile.gif" alt="" />

Sounds like you are using them "system" approach to your mods <img src="/forums/images/graemlins/kewl.gif" alt="" /> Lot's smarter than peeps that just slap in a K&N and expect some kinda miracle.

shaggy <img src="/forums/images/graemlins/notooth.gif" alt="" />

Looks good, nice clean install. Good for more fresh air coming inoengine, not good for deep water crossing. Here is how I set mine up for water crossings. <img src="/forums/images/graemlins/smile.gif" alt="" /> I have gotten rid of the K & N after finding about 1/8 inch of dirt in the TB and the rubber tube going to the TB!!! <img src="/forums/images/graemlins/barf.gif" alt="" />