air filter - The 1947 - Present Chevrolet & GMC Truck Message Board Network

71-longbed · 07-07-2003, 12:33 AM

i got a stock air cleaner setup on my 71 .... anyone have any shots of there semi modified air cleaner ... probaly going to get a k&n e-1450 to fit in there ....id like to have an open element performance with a stock look ....any thoughts ...

orange72350 · 07-07-2003, 01:11 AM

ive got just a round k+n filter in my stock housing. flipped the lid over to fit it in. looks ok, but makes a big throttle response difference. also like how u can clean and reoil instead of throwing out. definetley worth it.
my 2 cents.
dale

dmurphy68 · 07-07-2003, 06:55 AM

I was thinking about getting ths kit (clicky) cool with some ram air
Darren

Alex Hayley · 07-08-2003, 10:26 AM

Can anyone say with some certainty that the open airfilter makes performance suffer since it is sucking hot air? Or is that not a correct assumption?

yellowgmc · 07-08-2003, 10:41 AM

it depends on how restrictive the air intake it. on my f150 i went to and open conical air filter instead of the air box and eliminated the cold air ducting. lots more power even tho it's sucking h ot air now. the stock airbox was too restrictive. the best bet maybe to go to a cowl hood, or go old school and have louvers punched in the hood to let the hot air out.

chaptr2 · 07-08-2003, 03:33 PM

Here is a picture of my 14x5 with a K&N extreme top.

Southpa · 07-08-2003, 04:39 PM

I used to have a K&N but the truck had a hard time warming up on cold mornings. I made a straight trade with a guy for the stock setup with the stovepipe coming off the exhaust manifold. MUCH better performance for me.

Figment412 · 07-09-2003, 08:57 PM

That is why you use an aftermarket for summer and stock for winter.

71-longbed · 07-10-2003, 03:00 AM

i bought a K&N E-1450 ...to go in my stock air cleaner ..... i'll probaly have to do the same as you Figment412

dont know for sure yet though

anyone ever had any bad experiances with K&N filters..oil or air ??

PureChevy · 07-10-2003, 08:07 AM

I have used both on my camaro. the k&n air filter didnt help much. I did use a K&n oil filter a few times when the store was out of mobil 1's. They seemed to work fine.

Huck · 07-10-2003, 08:10 AM

A while back the PORSCHE magazine Excellence did an in depth analysis of using aftermarket air filters for performance improvements using a dyno. The results were ZILCH for the K&N filter verses a regular air filter from PIX, PUrolator, etc. Now some guys may say they have seen and felt some significant performance improvements using K&N. I changed over on a Porsche 928S4 and saw nothing. I also did the same for a 97C5 Corvette and saw nothing. Can't imagine how it would make a big improvement justifying their cost with a Chev V8 running a carb unless the existing air filter is clogged. What could help is doubling up on the stock air filter housing throats and then pulling the air in from in front of the rad support getting much cooler air but not ready to try that yet.

yellowgmc · 07-10-2003, 10:10 AM

the only oil problem i've heard of i on vehivles equipped with a MAF sensor. the oil is pulled off the filter and coates the sensor. it just needs to be cleaned carefully. otherwise i haven't heard of any other problems.

lukecp · 07-10-2003, 11:41 AM

I installed a K&N air filter and felt no noticible difference....i am also running a 14x3 chrome open-element air cleaner. Hot Rod did a test of various air cleaners not too long ago, and they were all the 14x3 size. To get the flow bench to show any restriction at all, they had to put duct tape over 1/2 the air cleaner. Even then, all the filters flowed around 3,000 CFM, plus or minus a few. Even the Purolator paper filter they tested was in 200 cfm of the K&N. When your carb is only rated to 600cfm, there proably isn't going to be much of a difference unless you are going from a tiny or dirty air filter to an aftermarket one.

07-07-2003, 12:33 AM	#1
71-longbed Its Magically Delicious Join Date: Jan 2003 Location: oregon Posts: 2,398	air filter i got a stock air cleaner setup on my 71 .... anyone have any shots of there semi modified air cleaner ... probaly going to get a k&n e-1450 to fit in there ....id like to have an open element performance with a stock look ....any thoughts ... __________________ 71 C10 LWB 350sbc -TH350 12 bolt 3.42 Posi Of all my favorite things to do, The utmost is to have a brew. My love grows for my foamy friend, with each thirst-quenching elbow bend. Beer so frosty, smooth, and cold it's paradise pure liquid gold. Yes beer means many things to me that's all for now cus I gotta pee.

07-07-2003, 01:11 AM	#2
orange72350 Registered User Join Date: Jan 2003 Location: Cold, Snowy High Level, Alberta Canada Eh Posts: 394	ive got just a round k+n filter in my stock housing. flipped the lid over to fit it in. looks ok, but makes a big throttle response difference. also like how u can clean and reoil instead of throwing out. definetley worth it. my 2 cents. dale __________________ 2003 yamaha raptor. Stock, but it still hauls!!!! 2000 skiddo mxz 700. Camoplast 1.5 inch track, jaws twin pipes, b+b can, custom built and weighted clutch, wiseco piston, high comp heads. its very fast. wow. 72 c-10 longbox. Bright Orange. Brand new 350, rv cam, performer intake, qjet, headers, 2 1/2 inch exhaust into hooker areo chamber mufflers. Body work coming soon. "dont let yer mind wander, its to little to go places by itself." "Forget the herse, cause i'll never die"-ACDC Back In Black "If It's To Loud, Yer Just Too Old" "I Love Anything Fast Enough To Do Something Stupid In" "Instant idiot, just add beer!!""

07-07-2003, 06:55 AM	#3
dmurphy68 Registered User Join Date: Nov 2002 Location: Middletown ohio Posts: 1,058	I was thinking about getting ths kit (clicky) cool with some ram air Darren __________________ The very atmosphere of firearms everywhere restrains evil interference. When firearms go, all goes, we need them every hour. - George Washington No free man shall be debarred the use of arms - Thomas Jefferson Later Darren http://www.myspace.com/dmurphy68

07-08-2003, 10:41 AM	#5
yellowgmc Getting cabin fever?!?!?! Join Date: Oct 2002 Location: chisholm, mn Posts: 1,679	it depends on how restrictive the air intake it. on my f150 i went to and open conical air filter instead of the air box and eliminated the cold air ducting. lots more power even tho it's sucking h ot air now. the stock airbox was too restrictive. the best bet maybe to go to a cowl hood, or go old school and have louvers punched in the hood to let the hot air out. __________________ Member of the Discs Up Front Club 1972 GMC 1500 1994 F-150 XL 4x4 Tact is for people not whitty enough to be sarcastic

07-08-2003, 03:33 PM	#6
chaptr2 Registered User Join Date: Mar 2000 Location: Olalla, WA Posts: 705	Here is a picture of my 14x5 with a K&N extreme top. Attached Images __________________ This is only my opinion and it is subject to change. 70 GMC Short box stepside Blown 388 Stroker 72 K/5 Blazer 350/SM465/205

07-08-2003, 10:26 AM	#4
Alex Hayley Registered User Join Date: Jul 2000 Location: NC Posts: 987	Can anyone say with some certainty that the open airfilter makes performance suffer since it is sucking hot air? Or is that not a correct assumption?

07-08-2003, 04:39 PM	#7
Southpa Registered User Join Date: May 2000 Location: Victoria, BC, Canada Posts: 2,409	I used to have a K&N but the truck had a hard time warming up on cold mornings. I made a straight trade with a guy for the stock setup with the stovepipe coming off the exhaust manifold. MUCH better performance for me. __________________ 1970 GMC 1500 Custom Original 350/TH350 Victoria, BC, Canada You can wish in one hand and crap in the other. See which one gets filled first.

07-09-2003, 08:57 PM	#8
Figment412 Registered User Join Date: Dec 2002 Location: Fort Wayne, IN Posts: 108	That is why you use an aftermarket for summer and stock for winter. __________________ Save your money and do it right the first time. 1968 GMC short bed 1972 Cab 74 SB Chevy running gear

07-10-2003, 03:00 AM	#9
71-longbed Its Magically Delicious Join Date: Jan 2003 Location: oregon Posts: 2,398	i bought a K&N E-1450 ...to go in my stock air cleaner ..... i'll probaly have to do the same as you Figment412 dont know for sure yet though anyone ever had any bad experiances with K&N filters..oil or air ?? __________________ 71 C10 LWB 350sbc -TH350 12 bolt 3.42 Posi Of all my favorite things to do, The utmost is to have a brew. My love grows for my foamy friend, with each thirst-quenching elbow bend. Beer so frosty, smooth, and cold it's paradise pure liquid gold. Yes beer means many things to me that's all for now cus I gotta pee.

07-10-2003, 08:07 AM	#10
PureChevy Registered User Join Date: Jun 2003 Location: Hickory, North Carolina Posts: 340	I have used both on my camaro. the k&n air filter didnt help much. I did use a K&n oil filter a few times when the store was out of mobil 1's. They seemed to work fine. __________________ 1972 k10 4x4 LWB (Sold in 2005)

07-10-2003, 08:10 AM	#11
Huck Senior Member Join Date: Jun 2001 Location: Shelbyville, KY Posts: 3,261	A while back the PORSCHE magazine Excellence did an in depth analysis of using aftermarket air filters for performance improvements using a dyno. The results were ZILCH for the K&N filter verses a regular air filter from PIX, PUrolator, etc. Now some guys may say they have seen and felt some significant performance improvements using K&N. I changed over on a Porsche 928S4 and saw nothing. I also did the same for a 97C5 Corvette and saw nothing. Can't imagine how it would make a big improvement justifying their cost with a Chev V8 running a carb unless the existing air filter is clogged. What could help is doubling up on the stock air filter housing throats and then pulling the air in from in front of the rad support getting much cooler air but not ready to try that yet.

07-10-2003, 10:10 AM	#12
yellowgmc Getting cabin fever?!?!?! Join Date: Oct 2002 Location: chisholm, mn Posts: 1,679	the only oil problem i've heard of i on vehivles equipped with a MAF sensor. the oil is pulled off the filter and coates the sensor. it just needs to be cleaned carefully. otherwise i haven't heard of any other problems. __________________ Member of the Discs Up Front Club 1972 GMC 1500 1994 F-150 XL 4x4 Tact is for people not whitty enough to be sarcastic

07-10-2003, 11:41 AM	#13
lukecp Formerly yellow72custom Join Date: May 2001 Location: Austin, TX Posts: 7,531	I installed a K&N air filter and felt no noticible difference....i am also running a 14x3 chrome open-element air cleaner. Hot Rod did a test of various air cleaners not too long ago, and they were all the 14x3 size. To get the flow bench to show any restriction at all, they had to put duct tape over 1/2 the air cleaner. Even then, all the filters flowed around 3,000 CFM, plus or minus a few. Even the Purolator paper filter they tested was in 200 cfm of the K&N. When your carb is only rated to 600cfm, there proably isn't going to be much of a difference unless you are going from a tiny or dirty air filter to an aftermarket one. __________________ '72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg



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