WA WTB -72 402 smog tubes - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**72BBChuck** · 04-10-2022, 11:42 AM

Looking for a drivers side set of smog (A.I.R injection ) tubes. Would buy a pair . The attached photo doesn't show the whole thing but it is the clearest pic I have of one. Any help would be appreciated. I am told there are people that can repair these if the end fittings are twisted off?? Thanks Chuck
The second photo is a passenger side. It is the same except the inlet is angled forward instead of vertical like the drivers side.

**davischevy** · 04-10-2022, 09:40 PM

There is an NOS RH on Ebay.

https://www.ebay.com/itm/12512294942...YAAOSwsAth9DvX

**davischevy** · 04-10-2022, 09:42 PM

Sorry, I didn't read your ad well.

**davischevy** · 04-10-2022, 09:59 PM

https://www.ebay.com/itm/11463651633...cAAOSwFdVe4UK7

72c20customcamper · 04-11-2022, 09:17 AM

I believe I have a set let me look

72c20customcamper · 04-11-2022, 09:49 AM

I have these these . Left part number is 14050537 no part number on the the rh one . These were hard to find back in the 90s when I bought them . They look like later big block tubes but should work .

$400 shipped

**72BBChuck** · 04-11-2022, 11:03 AM

Thank you Larry for the EBAY links. I had searched there but not found either of the ones you pointed out. The 72 Corvette RH looks the same as a truck but the part # doesn't match??
Thank you 72c20customcamper for your offer. I think you are correct. These GM tubes seem to match the generic 454 replacement tubes made by Standard Motor Products and offered by Summit Racing or Amazon for about $84 per side. They are my plan B.
I do have a nice set of small block "antlers" and, I think, all the other SMOG components for a small block if anyone wanted to do some trading. Thanks again guys, Chuck

**BlazerBill** · 04-13-2022, 01:22 AM

I have these couplers in really nice shape.

**72BBChuck** · 04-16-2022, 10:16 AM

Quote:

Originally Posted by davischevy

Sorry, I didn't read your ad well.

Thanks for the help Larry. I went ahead and bought the one you linked to ebay and the mate for the other side. The big block smog tubes seem to be real tough to come by as they appear to only have been used on 72 C-10 with 402 and earlier big blocks with California emission control. I will keep looking the correct truck LH but the prospects seem slim. Chuck

**72BBChuck** · 05-16-2022, 12:48 PM

Still looking for a correct drivers side

**72BBChuck** · 02-04-2023, 11:04 AM

Try, try, again

**72BBChuck** · 11-24-2024, 12:43 AM

Thank you DANTIP for the attached set. Still need one more set.

04-10-2022, 11:42 AM	#1
72BBChuck Senior Member Join Date: Jun 2007 Location: SW Washington State Posts: 216	WTB -72 402 smog tubes Looking for a drivers side set of smog (A.I.R injection ) tubes. Would buy a pair . The attached photo doesn't show the whole thing but it is the clearest pic I have of one. Any help would be appreciated. I am told there are people that can repair these if the end fittings are twisted off?? Thanks Chuck The second photo is a passenger side. It is the same except the inlet is angled forward instead of vertical like the drivers side. Attached Images Last edited by 72BBChuck; 04-10-2022 at 11:56 AM. Reason: added more info

04-10-2022, 09:40 PM	#2
davischevy Senior Member Join Date: Sep 2008 Location: Harrison, Arkansas Posts: 9,860	Re: WTB -72 402 smog tubes There is an NOS RH on Ebay. https://www.ebay.com/itm/12512294942...YAAOSwsAth9DvX __________________ other Larry Build thread, Arkansas K10 https://67-72chevytrucks.com/vboard/...=755797&page=5 The ability to speak several languages is an asset, but the ability to keep your mouth shut in any language is priceless.

04-10-2022, 09:42 PM	#3
davischevy Senior Member Join Date: Sep 2008 Location: Harrison, Arkansas Posts: 9,860	Re: WTB -72 402 smog tubes Sorry, I didn't read your ad well. __________________ other Larry Build thread, Arkansas K10 https://67-72chevytrucks.com/vboard/...=755797&page=5 The ability to speak several languages is an asset, but the ability to keep your mouth shut in any language is priceless.

04-10-2022, 09:59 PM	#4
davischevy Senior Member Join Date: Sep 2008 Location: Harrison, Arkansas Posts: 9,860	Re: WTB -72 402 smog tubes https://www.ebay.com/itm/11463651633...cAAOSwFdVe4UK7 __________________ other Larry Build thread, Arkansas K10 https://67-72chevytrucks.com/vboard/...=755797&page=5 The ability to speak several languages is an asset, but the ability to keep your mouth shut in any language is priceless.

04-11-2022, 09:17 AM	#5
72c20customcamper Registered User Join Date: Jul 2018 Location: Catskill Mountains,NY Posts: 8,713	Re: WTB -72 402 smog tubes I believe I have a set let me look __________________ Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary.

04-11-2022, 09:49 AM	#6
72c20customcamper Registered User Join Date: Jul 2018 Location: Catskill Mountains,NY Posts: 8,713	Re: WTB -72 402 smog tubes I have these these . Left part number is 14050537 no part number on the the rh one . These were hard to find back in the 90s when I bought them . They look like later big block tubes but should work . $400 shipped Attached Images __________________ Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary. Last edited by 72c20customcamper; 04-11-2022 at 10:14 AM.

04-11-2022, 11:03 AM	#7
72BBChuck Senior Member Join Date: Jun 2007 Location: SW Washington State Posts: 216	Re: WTB -72 402 smog tubes Thank you Larry for the EBAY links. I had searched there but not found either of the ones you pointed out. The 72 Corvette RH looks the same as a truck but the part # doesn't match?? Thank you 72c20customcamper for your offer. I think you are correct. These GM tubes seem to match the generic 454 replacement tubes made by Standard Motor Products and offered by Summit Racing or Amazon for about $84 per side. They are my plan B. I do have a nice set of small block "antlers" and, I think, all the other SMOG components for a small block if anyone wanted to do some trading. Thanks again guys, Chuck

04-13-2022, 01:22 AM	#8
BlazerBill Senior Member Join Date: Apr 2013 Location: Northern ca. Wine country Posts: 405	Re: WTB -72 402 smog tubes I have these couplers in really nice shape. Attached Images

05-16-2022, 12:48 PM	#10
72BBChuck Senior Member Join Date: Jun 2007 Location: SW Washington State Posts: 216	Re: WTB -72 402 smog tubes Still looking for a correct drivers side

02-04-2023, 11:04 AM	#11
72BBChuck Senior Member Join Date: Jun 2007 Location: SW Washington State Posts: 216	Re: WTB -72 402 smog tubes Try, try, again

11-24-2024, 12:43 AM	#12
72BBChuck Senior Member Join Date: Jun 2007 Location: SW Washington State Posts: 216	Re: WTB -72 402 smog tubes Thank you DANTIP for the attached set. Still need one more set. Attached Images



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