73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => Performance => Topic started by: chevy shortbox on May 18, 2006, 07:07:00 pm
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any one out there have any ideas what i can use for cold air intake on a 1986 chevy k10, that has a 350 tuned port injection motor? the filter i have now sits right on the throttlebody.iam looking to bring it on the drivers side of the radiator behind the grill,or whatever you think is best.thank you for any help.can't find kits on web
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Could always do it the 'homebrew' way and get some 3" ABS pipe from Lowe's and fab one up with a hacksaw and some elbows. Use a rubber coupling at the TB to the first elbow and then piece together from there. Put a cone filter with an inside diameter the same as that of the outside diameter of the ABS piece at the end of your setup, anchor it somehow, and you're done.
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thanks for the help sux2bu99.i just might do that.my other plan was to make a mock up of what i want out of pvc and have someone bend a tube for me.the problem iam having is connecting it to the tb intake,its oval and can't find parts for it. iknow there out there,but sometimes searching the internet gives me a headache!!!!
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have you checked into a K&N set up?they might have a (fipk) system for the tpi that you could modify a little to fit your truck.check out this site www.knfilters.com/FIPK/fipk.htm
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i made friends w/ an HVAC guy at the hospital i worked construction with and told him that i needed a cover to go over a 14" k/n filter with the extreme lid and 2 snorkels going towards the front of the truck, on either side of the radiator where the air intake ports are at. you may have to punch out the drivers side. that is simple to do. then i used 4" gutter hose from lowes, you know the black corrugated hose, from the front to the new filter cover. it is galvanized and spot welded and strong. so i'm not sure if it's cold air or just forced air. i'll have to get some pix of course. oh, you may have to go to the junk yard and pick up another of the adapter pieces that come from the front of the truck. the original air intake hose went to it, just get one and punch out the hole on the other side of the radiator. hope this helps.
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I've recently seen an add on ebay- dual intake snorkles.
oops, forgot to add- they are made for tbi, so I imagine they're good for tpi as well. $189.00 Edited by: DnStClr at: 5/26/06 9:27 am
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actually that there really isnt a cold air intake cold air intakes take in COLD air and that means air from the bottom of the truck and NOT behind the radiator, next to is ok but not behind the radiator, so make sure you put it low and not behind anything hot!
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Did i read that right.....MAN what ever happiend to the big old hood scoop no air filters and and and WOW
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Anybody seen anything out there similar to the tbi setup for a stock carb? I once saw one on an old Dodge that had a dual intake airbox on top of the carb with foil clothesdryer hose going to the headlight holes in the grille. It seemed to work but looked awful cheesy. Any ideas?
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Well I'm retarded. Went one more page and found my answer to my question posted earlier. Sorry
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Where did you find your answer? I can't find anything similar! I am also after a cold air intake for my '78 K10 - I have always used them on my turbo'd nissans yet I can't find anything except the ring-type filters.
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Well it doesn't sound as fancy as an aftermarket cold-air kit but do you know that the FACTORY air intake setup almost is a cold-air setup? The only thing preventing it is the round blocker plate from being a cold air/ram air setup. Look on the passenger side of the rad, up high and there should be a 3" dia. round hose connection with a plate in front of it. That's the factory air inlet, and then the flex hose went to the factory air cleaner. Pretty much everything a $200+ cold air kit would do. Just remove the blocker plate, put in a K&N replacement element and that should be it
But I know, I like the fancier, racier aftermarket look too and stock looks boring
I had a Dakota R/T where I did a simple mod of re-routing the air intake snout of the factory airbox from the fenderwell to beside the rad and put a flared inlet on it. So whatever air hit the front end of the truck, also went in that inlet unrestricted. It was a cheap, easy mod and was actually effective. Then I found a good deal on a K&N KIPK kit and installed it. Looked better 
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I just wanna put something out there. I have been told by many poeple that you actually make more power with one of the round open element filters than you do when you bring the air in through all those tube's to the carb. May be true/ may not be. Just what I have heard.
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Welp ill say it time and time again...Cold air intake is for tuner cars...no i just put a Hood scoop on my truck ...Cut a hole in my hood bolt it on...Its a harwoord ..comes with a slide in filter...and Its got a plate that seales the carb to the hood scoop...Now if u want ram air thats what ya need...And if it rains...Well just put the hood scoop plug in And plus it looks pretty sweet having a Red 96 k10 with 8 inch lift and a black hood scoop and roll bars and brush gaurd
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It's called volumetric efficiency. It's not really the temperature of the air that's the power maker. More air = more power and a cool dense air charge allows for more air volume, however warmer air will allow for better atomization of the fuel and that in itself creates more power than the money you would probably waste on a set up. A cowl induction hood allows for better quality air to be drawn in through your typical cheap chrome air cleaner assembly.
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I don't think though the benefits of better atomization from warmer air outweighs the performance benefit of a denser oxygen charge you get from cooler air. Look at how nitrous oxide works. It's incredibly cold when it's sprayed but it's also very densely packed with oxygen. Colder air always makes more power vs. warm air.
That all being said, a 14x3 open element air cleaner has less restriction where it brings the air into the carb than does bringing it all through a 3" tube. And since it's round, like the carb inlet (more or less), you get a more uniform airflow into the carb throat which also helps a little.
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Nitrous Oxide doesn't work solely on the principle of cold air it creates more oxygen which = higher cylinder pressure which = more force on the piston.
edit* I don't want to start a huge debate here but it really also depends on what type of driving you are talking about here. If you are using it as a daily driver warmer air = less wasted fuel for daily driving in most engines. Edited by: VileZambonie 
at: 1/3/07 4:57 pm
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^ Right, warmer air does use less fuel. Same reason why the heat valve is on stock air snorkels to get warm air off the exhaust manifold into the motor to make it warm up faster and improve cold-start emissions. And running coolant through the intake manifold helps it warm up quicker too.
One thing I always like though is that extra torque when the motor is nice and cold in the mornings.....and then the intake manifold and underhood air warms up and power fades off some 
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Went to the junkyard and found a stock original air cleaner box,hose and the plastic piece that goes in panel next to radiator. All were in good shape, came off a suburan. (91 I believe complete less than 20 bucks) I also have an orginal set up on my 79 chevy
I like the suburan set up better. It's a little long, has a slight bend in so it curve's away from the engine better. When I put the carb air intake on my 79 it ran better and I believe i get better gas mileage but have not checked. That's why I got another for my 78c10.
If you are running your air cleaner box without the carb intake hose I would recommend one, my 79 ran alot with it on. If you only need the hose and round plastic It's about 10 bucks from your local pull a part. May not look as nice as aftermarket but is cheap and works well.
:)
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Check out http://www.ramairbox.com/ (http://www.ramairbox.com/) they have some set ups that would work nice with our model trucks...
Knock out the other 3" cap on the radiator support, and you can run dual hoses...
Here is a picture of it on a '57
(http://www.ramairbox.com/images/test%20(03).gif)
May not be a cold air intake, but it might be something to look in to... Would not be hard to fab one either, at least for a carbed motor...
TPI would be a different story, but it could be done...
Whatever you come up with,post some picks... I am converting to TPI, and would like to know how it turns out!!
Good luck
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This is a write-up of the ramair box on a 73-87 truck: http://www.73-87.com/7387garage/drivetrain/ram_air.htm
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This is a write-up of the ramair box on a 73-87 truck: http://www.73-87.com/7387garage/drivetrain/ram_air.htm
Forgot all about that.... Thanks for the post Chris...