I think it makes a big differance, Onefine8T9 doesn't. Anyone have tested this doing a run with the stock air cleaner vs. without?. I still have my stock one w/k&n in the garage for emissions testing time.


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-Tas
'89 Formula WS-6
[soon to be Torch Red with black hood and headlights =) ]

305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....

Super GRK_Taz World
EFI & Intake Options
AOL IM: superGRtaz | ICQ 82881207

 

yes id really like to see somewhere where someone is getting .2 in the quarter mile by changeing ur air cleaner. Like taz said

 

8t9, will you change to the open if it makes .2 difference?

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, Jon (91 RS too many mods to list)

 

Here's something for you ......on my 327 w/ stock TBI intake, stock TB and stock 305 air cleaner assy (single snorkel).(had these on there so I could drive the car)>>>>I gained a little over 2 tenths on a G-Tech and had the same results at the track. 2 tenths is to me a SOTP difference when modding a car. I felt less of a performance gain when I went to the headers than w/ the open element.
Take it as you will....

 

LoL, chevyboy, somethin ain't right then. aftermarket Headers decreased ur 1/4 mile time???!!! Sayin that just sounds weird even. Just something isn't right.

I don't think there are any track differences with comparssions of the stock assembly to the open element. I don't think there would be anyways. But if u had a modified car you would need something better than the stock setup and some sort of cowl induction or ram air with the open element even. Then I think you would notice a difference between the stock and open element assembly. Know what I mean? On a stock LO3 engine, I don't think u would notice to much of a differnce if any, but on slightly modified or modified engine I think you would. Hell, do u see any of the old big blocks with our stock assemly setup? Nope. You will find open elements and there is a reason for that....

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Eric Natzke
91 Firebird 305 TBI
"It Ain't Stock"
http://members.aol.com/j007golden/91firebird.html
For info on certain parts or mods go to the site below
http://members.aol.com/j007golden/modeval.html

[This message has been edited by 91Bird305 (edited March 07, 2001).]

 

i dunno..i think it is possible. in theory, it should improve air flow a lot in the upper RPMs, but who knows if its enough for 2 tenths. i would gues MAYBE 1/2 a tenth.

but, i think that as with most other mods, it has to work in conjunction with a bunch of other stuff. you need the cam and exhaust to flow the air that the open element will flow, so on a stock L03, it probly doesnt make a difference.

BUT, for example on my car, if i had that stock snorkel setup, it would make a bigger difference, just because my crate engine needs that air.

just my 2 cents.

-brian

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1991 Camaro RS - ultra blue metallic, t-tops
GMPP 350 HO crate engine - TBI, MSD ignition, SLP exhaust
700R4 - 2,400 stall converter, vette servo
10 bolt - coming soon - SLP zexel torsen differential, GM 3.73s
z28boy.fbody.com
z28boy@twcny.rr.com
AIM - "Z28 Boy"

[This message has been edited by Z28 Boy (edited March 07, 2001).]

 

eric, he said it seemed like an open element made more of an improvement than headers, not that headers lost him performance.

 

eric u bring up a good point. Chevyboy has a 327. Not a stock 305. IF someone can prove that u get a solid .2 in the quarter mile ill be off that day to buy my edelbrock elite series set up with the K&N.

 

Edelbrocks are drop base, you want non drop base.

I said .1 or .2 see --> https://www.thirdgen.org/messgboard/...ML/000987.html

and so what if he has a 327? he got .2

[This message has been edited by Tas (edited March 07, 2001).]

 

Tas,
Talk to Lon over at sc3gfb when we were at anti-tour at LACR he tested the stock air cleaner aginst a open element and it was .2 and a couple of mph. If your lucky he might still have the time slips.

Zac Spalding

 

Yeah.....as TAS said.....I didn't mean I lost performance w/ the headers. I meant that they didn't feel as good as a mod than the open element did.
Again.......I gained 2 tenths and wouldn't try to mislead you guys by B/S ing you. Str8 up...what can i say

 

Ohh......and my "exhaust maniflods" before the headers were the Corvette "horn" 327/350 types....Those are a significantly better designed/flowing manifold than the 305 ones.

 

Hehe, oops, sorry. I knew that had to be wrong,

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Eric Natzke
91 Firebird 305 TBI
"It Ain't Stock"
http://members.aol.com/j007golden/91firebird.html
For info on certain parts or mods go to the site below
http://members.aol.com/j007golden/modeval.html

 

The 305 is a large engine, the 327 displaces only 22 more cubes (has a better bore to stroke but that's for upper rpm power). The 305 lacks in the upper power band because of the intake system in general. If you make it easier for the engine to breath then more power..duh. So if you give the 305 some breathing room in the upper rpm band then you'll have more peak hp no question. That extra rpm power band can make a big difference when it comes to trans shifting. When the trans downshifts from the higher rpm it'll start the next gear just under it's peak torque. Very good idea to get open element for ANY engine. If you want more torque then yes longer intake and more restrictive (to a limit) will help because the air is going to be traveling at a higher velocity. Open element might loose some torque, it's the same idea as an exhaust system basically. Open is faster but loose bottom end torque. Sorry for trying to act like a know it all, I do that sometimes and I know it gets annoying but tough, I'm a moderator

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, Jon (91 RS too many mods to list)

 

For those who want a stock type air cleaner to be 100% legal there are many options. The dual snorkel H.O., the lid from a Caprice cop car, adapting a truck aircleaner, cut off the part of the norkel with the 1x2" opening, gut that snorkel in general....just use your imagination. Almost anything is better than what came with our cars.

 

open element is better more air, hence more power. the stock snorkel for our cars sucks anyhting is better than it