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SBC air cleaner problems by trevorjay71
Started on: 12-24-2007 12:44 PM
Replies: 23
Last post by: Jake_Dragon on 12-27-2007 04:13 PM
trevorjay71
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Report this Post12-24-2007 12:44 PM Click Here to See the Profile for trevorjay71Send a Private Message to trevorjay71Direct Link to This Post
I just purchased a 87 GT with a 350 swap. I'm having a problem with the air cleaner. It had a 6 1/2 cleaner on it when I purchased it, but the filter is shot and I can't find a replacement filter that size. Also I would like to go with a bigger breather. I purchased a 9" that barely cleared the trunk braces, and I thought everything was ok. I took the car for a spin, and when I got back I took a look at the breather and it was bent all to heck. I guess under torque the engine moves enough that the breather unit hits the trunk brace.
I was wondering if anyone has any suggestions or can tell me what they've done with theirs. The car has a 4 barrell edelbrock.
Thanks
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Arns85GT
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Report this Post12-24-2007 02:43 PM Click Here to See the Profile for Arns85GTSend a Private Message to Arns85GTDirect Link to This Post
What may help is an air cleaner design commonly called a "Corvette cleaner".

It operates like this



I use a 2" K&N and my net height difference is less than 2".



I used the Moroso diagram as an example, but any speed shop sells a similar item.

Hope this helps

Arn

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trevorjay71
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Report this Post12-24-2007 02:58 PM Click Here to See the Profile for trevorjay71Send a Private Message to trevorjay71Direct Link to This Post
Thanks for the reply. I have one of those on one of my other vehicles and tried it on the fiero. I'ts a 14", and I had problems with it being too wide and hitting another part of the trunk lid. I tried to find a smaller diameter, but haven't found any yet.
I'm thinking about cutting out part of the trunk brace, and I think that will solve the problem.
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project34
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Report this Post12-24-2007 04:07 PM Click Here to See the Profile for project34Send a Private Message to project34Direct Link to This Post
 
quote
Originally posted by trevorjay71:

I just purchased a 87 GT with a 350 swap. I'm having a problem with the air cleaner. It had a 6 1/2 cleaner on it when I purchased it, but the filter is shot and I can't find a replacement filter that size.

They're not cheap, but they may have a 6-1/2"-diameter air filter that fits your application: http://www.knfilters.com/se.../univ2.aspx?ID=S0001
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Jake_Dragon
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Report this Post12-24-2007 05:06 PM Click Here to See the Profile for Jake_DragonSend a Private Message to Jake_DragonDirect Link to This Post
Check your motor mounts.
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Oreif
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Report this Post12-24-2007 05:18 PM Click Here to See the Profile for OreifClick Here to visit Oreif's HomePageSend a Private Message to OreifDirect Link to This Post
Here is the one I am using:
http://store.summitracing.c...057+115&autoview=sku

With it's original air filter it fit under the stock decklid with no problem.
I had to buy a K&N 3.5" X 10" filter element to raise the top of it into my scoop.

Here is the 6.5" replacement for the air filter that came with your car:
http://store.summitracing.c...053+115&autoview=sku

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[This message has been edited by Oreif (edited 12-24-2007).]

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trevorjay71
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Report this Post12-24-2007 06:32 PM Click Here to See the Profile for trevorjay71Send a Private Message to trevorjay71Direct Link to This Post
 
quote
Originally posted by Jake_Dragon:

Check your motor mounts.


I was wondering if they might be broke. I haven't had a chance to look at them yet, but the motor seems to move around more than it should.
Thanks
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trevorjay71
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Report this Post12-24-2007 06:33 PM Click Here to See the Profile for trevorjay71Send a Private Message to trevorjay71Direct Link to This Post

trevorjay71

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Thanks for the link project34.
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trevorjay71
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Report this Post12-24-2007 06:37 PM Click Here to See the Profile for trevorjay71Send a Private Message to trevorjay71Direct Link to This Post

trevorjay71

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Thanks for the info Oreif.
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Jake_Dragon
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Report this Post12-24-2007 07:43 PM Click Here to See the Profile for Jake_DragonSend a Private Message to Jake_DragonDirect Link to This Post
When I got my V8 the motor and tranny mounts were shot. I solid mounted the tranny and welded the motor mount to the cradle. No more moving around.
I just welded some angle iron to the stock mounts, I do plan on making it look better one of these days but it gets the job done. The front tranny mount takes a lot of beating!
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gt7
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Report this Post12-24-2007 08:06 PM Click Here to See the Profile for gt7Send a Private Message to gt7Direct Link to This Post
When I bought my 87 Gt 350, the front motor plate was only bolted to the cradle. Every time I got down on the throttle while driving, the air cleaner and stud got bent over. It has Archie's kit, and his instructions are to bolt the engine and cradle assembly together for a trial fit-up in the car, but then to drop it back out to weld the plate to the cradle. Once I welded it (in the car incidentally), the problem went away. Hope this helps you.

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Tom
Suffolk, Va
87 Gt 2.8-5spd
87 Gt 350-5spd
88 T-top coupe 2.5-5spd

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Russ544
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Report this Post12-24-2007 09:44 PM Click Here to See the Profile for Russ544Send a Private Message to Russ544Direct Link to This Post
I've been using this Holly unit on my sbc car. I'm using an Edelbrock Performer RPM manifold, which is quite high, with no clearance problems. the filter shape allows it to miss the decklid brace.
http://store.summitracing.c...+115+320704&D=320704

Russ544
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trevorjay71
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Report this Post12-24-2007 09:46 PM Click Here to See the Profile for trevorjay71Send a Private Message to trevorjay71Direct Link to This Post
 
quote
Originally posted by gt7:

Every time I got down on the throttle while driving, the air cleaner and stud got bent over.



That's exactly what's happening with my car.
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prostreet505
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Report this Post12-24-2007 11:34 PM Click Here to See the Profile for prostreet505Send a Private Message to prostreet505Direct Link to This Post
This is what I was running on my 84:



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linuxpowered88
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Report this Post12-25-2007 04:49 AM Click Here to See the Profile for linuxpowered88Send a Private Message to linuxpowered88Direct Link to This Post
I use the Edelbrock Pro Flow 1000 (part number 1002 4 barrel carb I assume) It breaths well It clears the trunk lid and archie recomends and uses it. http://www.edelbrock.com/au...s/ac_ss_chrome.shtml its on the bottom of the page.
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mmiller
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Report this Post12-25-2007 08:28 AM Click Here to See the Profile for mmillerSend a Private Message to mmillerDirect Link to This Post
Here's my setup using Jeep Grand Cherokee parts and a cone filter. I'm not sure about the flow differences, but I know it gets colder air. I tried a few filters on top, but I liked this setup better.
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Alex4mula
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Report this Post12-25-2007 12:05 PM Click Here to See the Profile for Alex4mulaSend a Private Message to Alex4mulaDirect Link to This Post
Please don't choke your SBC. I would try to use at minimum a carb adapter like this with 3-4" piping to a good high flow cone filter.

http://www.jegs.com/webapp/...0001_10002_769224_-1



Look for their modular intake parts here.
http://www.jegs.com/webapp/...0001_10002_769283_-1

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Oreif
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Report this Post12-25-2007 12:49 PM Click Here to See the Profile for OreifClick Here to visit Oreif's HomePageSend a Private Message to OreifDirect Link to This Post
 
quote
Originally posted by linuxpowered88:

I use the Edelbrock Pro Flow 1000 (part number 1002 4 barrel carb I assume) It breaths well It clears the trunk lid and archie recomends and uses it. http://www.edelbrock.com/au...s/ac_ss_chrome.shtml its on the bottom of the page.


Be careful of these. I originally had one and was told by many of the dangers of using these. Both at car shows and quite a few hot rod forums. The problem is the foam filter can get fuel on it and if the engine gets a backfire thru the carb, the foam filter catches on fire and melts into the carb and sets the top of the engine on fire. The other problem is that the foam dries out and flakes are drawn into the engine over time.

REF:
http://realbig.com/pipermai...-January/080106.html

[This message has been edited by Oreif (edited 12-25-2007).]

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linuxpowered88
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Report this Post12-25-2007 12:58 PM Click Here to See the Profile for linuxpowered88Send a Private Message to linuxpowered88Direct Link to This Post
Thanks for the info on the breather. I didn't know. I wonder if archie knows this he recommended the setup based on flow and price. I'm sure he wouldn't use it if he thought it was dangerous.
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fieroguru
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Report this Post12-25-2007 07:02 PM Click Here to See the Profile for fieroguruSend a Private Message to fieroguruDirect Link to This Post
When my car had a carb, I used a procharger carb hat and remote filter in the well well.
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trevorjay71
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Report this Post12-26-2007 04:43 PM Click Here to See the Profile for trevorjay71Send a Private Message to trevorjay71Direct Link to This Post
I'm going to check the engine and tranny mounts before I do anything, but after looking at everyone else's set ups, I'm leaning toward a carb hat with remote filter and plumb it all to the holley side air scoop it has on it already.
Thanks for all the input.
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Snapperhead
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Report this Post12-26-2007 05:49 PM Click Here to See the Profile for SnapperheadClick Here to visit Snapperhead's HomePageSend a Private Message to SnapperheadDirect Link to This Post
I run a Edelbrock Pro-Flo, 10 in. Diameter #1208 less than $20 works great. Summit Racing and Auto Zone. Vince
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trevorjay71
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Report this Post12-27-2007 03:27 PM Click Here to See the Profile for trevorjay71Send a Private Message to trevorjay71Direct Link to This Post
I got a chance to look at the motor mounts last night, and found the frame is cracked in three places where the motor mount is welded to it. I was able to get in there with my welder and fixed it temporarily, but it will need reinforced soon. That took care of the engine moving around.
I was also able to bend my 9" edelbrock air cleaner close to a circle shape, and it will work for now, although it looks bad. It will have to do, until I can do something different.
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Jake_Dragon
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Report this Post12-27-2007 04:13 PM Click Here to See the Profile for Jake_DragonSend a Private Message to Jake_DragonDirect Link to This Post
 
quote
Originally posted by Jake_Dragon:
Here is the front motor mount welded and painted.




It is pretty long so it will spread the load out.


Here is what I did
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