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What Air Intake work well?

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Old Oct 13, 2023 | 09:31 AM
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Default What Air Intake work well?

I’m working on my’89 383 build and this week’s obsession is my air intake. The stock air box is too constricted thru the neck , the late C4 box doesn’t fit at all, and now I’m looking at building something but can’t seem to locate the parts in workable sizes.
One intake I’ve been looking at is the Vortex Rammer. But I’m not sure if they work as well as they look like they would.
Any constructive suggestions are appreciated!
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Old Oct 13, 2023 | 07:50 PM
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I fabricated a sheetmetal air intake that uses the stock size filter. It works well for me.

With it off I can stick my arm through the 4 inch tube and touch the back of the air filter. With the stock intake my KPa was dropping into the 80's by 5500 rpm's. With this one I am at 98KPa at 6200.
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Old Oct 14, 2023 | 01:13 AM
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Looks like you did some pretty good work on it! Thanks for the feedback!
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Old Nov 7, 2023 | 01:45 PM
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Originally Posted by RWDsmoke
I fabricated a sheetmetal air intake that uses the stock size filter. It works well for me.

With it off I can stick my arm through the 4 inch tube and touch the back of the air filter. With the stock intake my KPa was dropping into the 80's by 5500 rpm's. With this one I am at 98KPa at 6200.
Is there any chance you still have any drawings or plans on your design?
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Old Nov 7, 2023 | 02:27 PM
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I found a little trick with my 1990 C4. Place some reflective foil insulation under your air filter box. This will help reduce radiant heat from your radiator shroud. This helps reduce heat into your air filter housing, cut it a little smaller so no one can see it.
John

White/black 1990 ZR-1 #2546
one of a few 4l8OE eq ZR-1's
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Old Nov 7, 2023 | 02:35 PM
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Originally Posted by Yguy
Is there any chance you still have any drawings or plans on your design?
I made it 7 or 8 years ago, No plans, I just used cardboard to mockup a design that would fit over the radiator and clear the hood. There is no room to go taller over the radiator so I went wider. I had use of a CNC plasma table, a sheet metal brake and welder at work. And most important, a friend/co-worker with fabrication experience.
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Old Nov 7, 2023 | 04:30 PM
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Originally Posted by RWDsmoke
I made it 7 or 8 years ago, No plans, I just used cardboard to mockup a design that would fit over the radiator and clear the hood. There is no room to go taller over the radiator so I went wider. I had use of a CNC plasma table, a sheet metal brake and welder at work. And most important, a friend/co-worker with fabrication experience.
ok, I understand. Funny how time gets by us isn’t it?
I do appreciate your replies. I might be able to figger it out from the first photo you posted.
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