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Old 03-04-2019, 06:17 PM   #1
SCOTI
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Air Cleaner Duct Tubing

Anyone have a p/n or source info for replacement air cleaner inlet ducting? Since these trucks had the round to oval transitions, I'm curious if there was an aftermarket duct-hose that adapts easy enough.

Please..... No 'wrecking yard' recommendations. 99% of any squarebody in a yard is plucked of useable stuff these days if you can even find a yard w/a square. If you're lucky enough to actually find a square, the heat/elements typically render the same quality plastics under hood that we're trying to repair.
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Old 03-04-2019, 07:58 PM   #2
Palf70Step
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Re: Air Cleaner Duct Tubing

LMC had it for V8 models last time I looked. The 6 is slightly smaller and did not see that size in their catalog.
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Old 03-10-2019, 12:07 PM   #3
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Re: Air Cleaner Duct Tubing

I got my OEM air cleaner duct for my 83 C20 from a place called Vintage Parts.
They sell some obsolete original car parts and even parts for old appliances.
You must have the GM part number to search for parts on their website. My duct was not cheap (about $35 as I recall) but it was the correct duct for my truck.
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Old 03-11-2019, 09:47 AM   #4
SCOTI
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Re: Air Cleaner Duct Tubing

Thanks for the suggestions.
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67SWB-B.B.RetroRod
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89CCDually-Driver/Tow Truck
99CCSWB Driver
All Fleetsides

Building a small, high rpm engine
with the perfect bore, stroke and rod ratio is very impressive...
like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar.

Cubic inches is like Indiana Jones with a cheap pistol....
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Old 03-16-2019, 02:10 PM   #5
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Re: Air Cleaner Duct Tubing

I need one too for duel air cleaner I had one keep going yards and boards could no find one so I order one from LMC after two years of looking. There a little thinner made.
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1977 REG cab Long Bed with a 1984 Front Clip, 82 305 .60 over 9.0.1 flat top pistons, 4bbl, TH350, w/84 SS-intake & cam , w/ 1977 big block rad, 1975 gear box, 1984 master w/ metric fittings top & SAE fitting @ portion block, 1975 3.42 gear open diff. Duel 77-87 Factory air cleaner, duel inlet from rad support . Down sized 9' to new 8' Steel flat bed
Was a 77 454 w/308 gear. Taken out 550 lbs. up front with motor clip change.
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Old 03-16-2019, 02:37 PM   #6
Justins76
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Re: Air Cleaner Duct Tubing

The LMC one looks like the pre-TBI air cleaner as it lists 1981-86. Has anyone found the TBI style ducting?
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Old 03-17-2019, 08:35 AM   #7
Pontiac1976
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Re: Air Cleaner Duct Tubing

They have both order the right one you need. I got the long straight one. Not the TBI! because I running two tubes to the duel air cleaner to get more air in.
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1977 REG cab Long Bed with a 1984 Front Clip, 82 305 .60 over 9.0.1 flat top pistons, 4bbl, TH350, w/84 SS-intake & cam , w/ 1977 big block rad, 1975 gear box, 1984 master w/ metric fittings top & SAE fitting @ portion block, 1975 3.42 gear open diff. Duel 77-87 Factory air cleaner, duel inlet from rad support . Down sized 9' to new 8' Steel flat bed
Was a 77 454 w/308 gear. Taken out 550 lbs. up front with motor clip change.
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