i wan to run a high flow filter but ive been told that it actually hurts the motor because it pull in hot air from under the hood. does anyone make a cold air induction kit for the lo3? how else could i simulate cold air intake? anyone make the 82-92 ss hood functional, would that work?

 

My engine bay:

Drawing of my idea:


Im in the same boat my friends, Im going to use my Iroc grill as an inlet and fab something up! good luck with yours! Let me know what you come up with

 

If you live somewhere constantly hot like AZ, then the CAI will definatly help. The carb hat and ***** intake tube is an easy way to go. I have that as well.

If in cold climates, though, its best to pull warm air at all times as the TBI wont run as well with varying intake temps.

 

Where can I get one of those assemblies that covers the TBI like that and allows 4" pipe or whatever to be attached? I'm dying to ditch my stock L03 setup.

 

198?-199? Cadillac FWD V8 TBI/MPFI cars prior to the Northstar had a TBI bonnet that can easily be used. Be sure to grab the stud from the TBI and the **** that fits on it.











I have been meaning to relocate the air filter down to right below the evaporator box on the passenger side away from the hot air. The Intake Air Temperature is hitting around 135-140* on a 85* day, which I know is killing some HP. Just have not had time to do it.

 

How well does it flow? It looks like it fits under a thirdgen hood alright, but can this be varified?

 

I got my Chromed Bonnet and tube from my local speed shop. $99.00 Canadian for the 4" bonnet, then I got a 3" intake tube and made it all work

 

Did you have to do modifications or did it just bolt on?
I am thinking of something like that turned to the front with a ram intake filter and box I saw for tpi.

 

It flows very well for a stock air bonnet. I am making about 350 HP right now and still see MAP readings above 95 KPA @ 5,000 rpm. So it is pulling about 1.5-2 in/hg in the whole intake system. That would be through the filter, the MAF, the ducting, the bonnet, and the TBI unit. Not bad at all.

My understanding is that it will fit under the stock thirdgen hood just fine.

Another member had one a while back that was plumbed to a TPI style air cleaner up from. Claimed it worked well.

 

Take off original one and that spacer around the TB. put this one and put wingnut on, thats it.

 

Wath are al the hoses and cables for?
Im loking into a similar air intake and would like to keep all the factory sensor's and hose's and if possible an alternaty to the thermac function.
Can you help me?

 

I was not one of the first, but here is my cadillac/tpi air intake.



The difference in air intake temperatures of this hybrid and an open element is large (40+). You will have to remove about half an inch from the cadillac bonnet to clear the stock hood.

 

Here ya go...Mine, love it.Old pic, alot has changed under there, but I can say this REALLY woke my motor up..Plus it sounds so good now.If you have questions PM me, Tom

 

What do you mean it sounds better? Underhood noise or exhaust tone?

 

galileo, that setup looks pretty trick. before you made that air intake did you ever try an open element? i have one now , and on hot days or after running the car for awhile it seems to lag in power.
also another thought i had is that it would be cool to have a cowl induction hood that sealed with the air cleaner only letting air in from the cowl like some 69 z28's had. anyone ever tried this?

 

No, I went from stock to this...It breaths thru 2 gutted TPI boxes, and a K&N filter in the round part..There is aluminium duct work at the front of the car to direct more air in (Looks cool from the front), it is true ram air...And by sound, I mean you get that cop car kinda noise, like a big four barrel kicking in...I can truly say, it has made more of a difference to the way the car runs than any mod up to that point...Tom

 

Just one question.
I know that hot air is the ennemy of horsepowers, but the flow rate of an open element is more important than a CAI one, no? Even if the air is much hotter under the hood, I think an open element like KN Xtrem is less restrictive than a CAI...
Can you tell me the air flow rate for an open element and for a CAI.

 

what differences do the camaro/firebird have on the air intake for the tpi? im guessing the camaros had better airflow

 

What is really needed on a setup like mine is to increase the opening in the round breather case..I did open it up some, but as I mod my motor more, I will enlarge it even more..That way, I will have the best of both worlds, cold air, and lots of it......I am thinking about a K&N top for my breather, that way I will still get cool air from the ram air setup, but will get more air flow from the top..I know that at low speeds I will get more hot air in, but as speed increases the cool air flow will increase...Also, I have removed the rubber seal at the back of my hood, which lets hot air out alot easier...If I get the top, I will let everyone know what I think about it.Tom

 

saw your air set up , i am doing the same thing . used k&n 66-1401 on top ,
with a regular nut . stud was not long enough for wing nut . had to cut center out of metal lid , inside 3rd step on lid . there will be a gap with k&n lid that i sealed with foam tape [ no rattles with lid foam tape holds it secure ] . my question to you is what is your filter housing from or did you have to fab. it yourself ? would send a pic. if i knew how to of my set up . also what is the flex tube from ? i also have a white 89rs with "T" tops. they say great minds travel in similar circles?
speedy reply would be great . uncle tom , ms. gulf coast .

 

What you need is a cold air package that flows well...The better open elements will flow more air than MOST motors need...So it depends on the Cold Air Package....Without doing in car testing it is hard to say which works the best...Im sure mine is not the best flowing cold air setup, but it is MUCH better than stock...The limiting factor on mine is the size of the opening going into the round breather box....Mine is larger than the stock one, altho from the pictures it is hard to tell....The flexible tube is the stock TBI part that was on the car, it is turned around backwards....I am going to try a K&N extreme lid..It will alllow more airflow (Good) but will also let hot air in (Bad) I am hoping that the good will outway the bad...The cool air coming in the front will mix with the hot air, so I will have a cool air package...At least I hope that is how it works out...I will let everyone know if there is a difference at the track......Ideas on this anyone?????? Thanks, Tom

 

Were did you put the sensor that is in the stock housing?

 

When I did it, I put the iat sensor where the pcv hose would have went in the cadillac bonnet. To do this I had to extend the wires roughly 12", and I had them exit the loom closer to the front of the engine bay. Then I put them in their own smaller loom and it now looks factory.

 

If you click this link you will see a step by step of how to do a cold air switch. This is how I did mine and I love it. Immediate increase in HP.

https://www.thirdgen.org/forums/tbi/...i+tpi+cold+air

 

You want the sensor as close to the TBI as possible..(At least I think so) Mine is in the stock location...There is another one on the TPI box, but I have not tried it.....

 

would this work with an airgap intake? im having trouble already clearing my stock hood with a drop base on a stock manifold.

 

The filter case is stock, but not sure about the airgap, it is taller than stock...

 

My big snorkle.

http://memimage.cardomain.net/member...861_4_full.jpg

http://memimage.cardomain.net/member...861_5_full.jpg

http://memimage.cardomain.net/member...861_6_full.jpg

http://memimage.cardomain.net/member...861_7_full.jpg

 

thomas1976 where'd you get that big inlet(scoop) at. how'd you get the stock bonnet to turn the way you have it? liking the set up can you explain in detail

 

The scoop is a experiment I build myself out of fiberglas.
The stock bonnet is not turned, I took the original inlet off and cut a much bigger hole in the front, dremmeld the silencer ring out and plugged the thermac activator.
It is not finished im just testing it. In the end im going to drill some 1" holes on the inside of the hood, its a trans am hood with the 2 griles.
I can e-mail you some pics of the bild up if you need.

 

this works wonderfully!

ram air box #10x3S, 3" k&n, 4" turbo cuppler hose and self made snorkle.

http://www.cardomain.com/member_page...86_16_full.jpg

http://www.cardomain.com/member_page...86_17_full.jpg

http://www.cardomain.com/member_page...86_18_full.jpg

http://www.cardomain.com/member_page...86_19_full.jpg

http://www.cardomain.com/member_page...586_3_full.jpg

 

Thomas, what kind of bonnet is it you use in that setup ? The Cadillac one ?

 

Its not the cadillac one, but mine is.

 

hmmm i was thinking about getting a good bonnet.. and fiberglass the front tunnel thingy... reason why i asked hmmm

****.. once i get the car running... going to port the my backup heads... LT1 cam ... spacer... ported intake manifold .. .and.. maybe maybe.. exhaust

so i need to learn how to tune or find someone


Fast355, do you have ANY pictures of the mod to the intake manifold, where you remove the center piece to make it an open inlet ? I know one has to weld up the water passages ? How far down does one grind ?

 

Vorgat, it is the #10x3S filter box from ramairbox.com
There is no place left for a tb spacer with this air cleaner assembly the problem is were the 4" inlet goes straight out.
But a carb bonnet should fit with no problem specially the spectre ones that is 3.55" high and has the 4" inlet slightly dropping.
Dont forghet the filter there is no place between the radiator and serpentine set up, but you could use the camaro tpi air intake essembly + filters.

 

oh i don't care about height .. gonna modify my Z28 fiberglass hood one day anyway

thanks for the info

*looks at website*

WHAT ? it's made out of fiberglass ? heck... i'll grab a Caddie bonnet and modify it using fiberglass then.. or even make a fully custom one

 

The base plate is a aluminium piece.
Post your custom one when done.

 

Here is a close look at mine.

From this ...


to this...


a tremendous increase in power...