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Old 10-15-2015, 09:58 PM   #1
paolotvl
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Fresh air duct installation - help

Hello everybody,

My 1987 Custom Deluxe was missing the fresh air duct from the air box to the radiator side. So I found it on LMC and ordered it. I just got it and I tried to install it. I bought the correct one (26", the longer one) but it seems too short, by at least 2-3". I tried to stretch it a little bit, but it is a little stiff. Looking at the engine bay trying to figure out what the problem was I noticed that the air box outlet is straight to the side. It is at 90 degrees to the engine, normal to the right side of the truck. Is it possible the the air box Instead should be rotated about 45 degrees so that the air duct would not have to do 90 degree elbow to connect to the connection on the side of the radiator ??
Thank you for your help.
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Old 10-15-2015, 11:49 PM   #2
rich weyand
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Re: Fresh air duct installation - help

There's a 26". Yeah, about 45 degrees, maybe not quite.

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Old 10-16-2015, 12:03 AM   #3
chengny
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Re: Fresh air duct installation - help

Here are 3 different trucks I had (85 & 86's) that were bone stock:

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Old 10-16-2015, 01:12 AM   #4
paolotvl
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Re: Fresh air duct installation - help

I figured it out. The one I got is for a 1986. Mine is the tbi 1987 and the air filter outlet is at 90 degrees to the engine. Apparently it's own duct seems impossible to find. For the time being I'll find a way to adapt it, while I look for the correct one....
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Old 10-16-2015, 01:15 AM   #5
paolotvl
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Re: Fresh air duct installation - help



I was trying to share pics....

Last edited by paolotvl; 10-16-2015 at 01:21 AM.
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Old 10-16-2015, 01:19 AM   #6
paolotvl
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Re: Fresh air duct installation - help

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Old 10-16-2015, 01:28 AM   #7
paolotvl
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Re: Fresh air duct installation - help

I took the air filter apart and you can only install it in one position. So the hose I got is wrong
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Old 10-16-2015, 01:29 AM   #8
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Re: Fresh air duct installation - help

Thank you for the replies. I appreciate it
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