Need Name or Part Number - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Already Gone** · 05-18-2016, 01:08 PM

I'm trying to keep my truck as original as possible including the emissions stuff. My truck is a 72 with 35/350 and factory A/C. On the passenger side there is a hose that goes form the Air Cleaner to the valve cover and I want to replace the "thing" that goes in to the valve cover. I know it has arcs in it but can't sem to find a listing for it and do not know the proper name of it. I would like to replace it, does anyone know where to buy one or have name and/or part number for it?

**Ol Blue K20** · 05-18-2016, 01:34 PM

If my memory serves me correctly it's called a spark arrester.

saxart · 05-18-2016, 01:49 PM

PCV valve?

Fandango · 05-18-2016, 02:18 PM

It is called a flame arrestor.

Valarius_Starchaser · 05-18-2016, 02:36 PM

whats in the valve cover on the other side generally there is a grommet and then the PCV valve in the cover while yours appears to simple be jammed into the valve cover...

I have never seen or heard of a flame arrestor on a vehicle except for a race vehicles air cleaner being made of flame resistant materials but could be wrong here

Here is an image of a simple PCV Valve OEM numbers could be as follows
25040145, 25040148, 25043355

**Already Gone** · 05-18-2016, 02:53 PM

Quote:

Originally Posted by Valarius_Starchaser

whats in the valve cover on the other side generally there is a grommet and then the PCV valve in the cover while yours appears to simple be jammed into the valve cover...

I have never seen or heard of a flame arrestor on a vehicle except for a race vehicles air cleaner being made of flame resistant materials but could be wrong here

Here is an image of a simple PCV Valve OEM numbers could be as follows
25040145, 25040148, 25043355

On my truck the PCV Valve is on the drivers side and i did replace it already.

**Ironangel** · 05-18-2016, 03:00 PM

Is this it?

This came off of a 350ci 72' C-10 $30 shipped...

**FirstOwner69** · 05-18-2016, 03:08 PM

As stated above, it's a flame arrestor. It is not considered to be a normal service replacement item. Why do you feel you need to replace it? My 1969 service manual recommends this:
"Remove the flame arrestor and wash in solvent, then dry with compressed air."

I believe as long as it permits the free flow of air, all is well.

**Already Gone** · 05-18-2016, 03:18 PM

Quote:

Originally Posted by Ironangel

Is this it?

This came off of a 350ci 72' C-10 $30 shipped...

This is it..At the bottom of the hose.

**Already Gone** · 05-18-2016, 03:20 PM

Quote:

Originally Posted by FirstOwner69

As stated above, it's a flame arrestor. It is not considered to be a normal service replacement item. Why do you feel you need to replace it? My 1969 service manual recommends this:
"Remove the flame arrestor and wash in solvent, then dry with compressed air."

I believe as long as it permits the free flow of air, all is well.

Thanks, and that is why I probably cant find one. I didn't realize they lasted the life of the vehicle. I just thought it'd plug up over 40 years and thought its time to replace. I guess i should get a Service Manual for the truck.

Valarius_Starchaser · 05-18-2016, 03:20 PM

Okay did some more looking through catalogs and for 72 400 BBC and 350 SBC I found a flame arrestor part number 6262992 it's not shown in a diagram though or else I would have scanned one in for us

**FirstOwner69** · 05-18-2016, 03:27 PM

Quote:

Originally Posted by Already Gone

Thanks, and that is why I probably cant find one. I didn't realize they lasted the life of the vehicle. I just thought it'd plug up over 40 years and thought its time to replace. I guess i should get a Service Manual for the truck.

I'm still running my original (119,000+ miles) as long as I can blow through it without restriction, I'm happy. I've never cleaned it that I can recall.

cypressbog · 05-18-2016, 03:34 PM

So, does the flame arrestor have a one way valve inside to prevent possible backfire flame from entering inside the valve cover?

**FirstOwner69** · 05-18-2016, 03:52 PM

Quote:

Originally Posted by cypressbog

So, does the flame arrestor have a one way valve inside to prevent possible backfire flame from entering inside the valve cover?

No. It's free flowing both directions. It appears to have metal "louvers" (probably a series of them) which apparently block a backfire from entering the valve cover. It's visible from the valve cover end. I've never looked at one from the carb end. Some other Chevys (Corvettes, etc.) used a screen-like dome filled with a metal mesh which I believe was inside the air cleaner.

cypressbog · 05-18-2016, 03:58 PM

Quote:

Originally Posted by FirstOwner69

No. It's free flowing both directions. It appears to have metal "louvers" (probably a series of them) which apparently block a backfire from entering the valve cover..

Good info!

**FirstOwner69** · 05-18-2016, 03:59 PM

Quote:

Originally Posted by Already Gone

Thanks, and that is why I probably cant find one. I didn't realize they lasted the life of the vehicle. I just thought it'd plug up over 40 years and thought its time to replace. I guess i should get a Service Manual for the truck.

Here's a 1972 service manual link from Hatzie's thread. Look at pages Engine 6-6 and Engine 6-7.
ST_330_72_1972_Chevrolet_Truck_10-30_Chassis_Service_Manual

Oops... that didn't work. Here's the link to the thread.

http://67-72chevytrucks.com/vboard/s....php?p=5781194

**FirstOwner69** · 05-18-2016, 04:06 PM

Quote:

Originally Posted by FirstOwner69

No. It's free flowing both directions. It appears to have metal "louvers" (probably a series of them) which apparently block a backfire from entering the valve cover. It's visible from the valve cover end.

This is what it looks like at the valve cover end.

**FirstOwner69** · 05-18-2016, 04:21 PM

Here's some basic patent info. Not much use though.

http://ip.com/pat/US3287094

EDIT: Tis time to beat the dead horse...

http://www.freepatentsonline.com/3287094.pdf

**FirstOwner69** · 05-18-2016, 05:03 PM

OK, for those wanting a new one. Gm Part #3857476 (discontinued).
http://www.ebay.com/itm/Corvette-NOS...3D170965175853

http://www.ebay.com/itm/GM-NOS-1964-...-/170965175853

http://www.ebay.com/itm/NOS-Genuine-...dWnPjo&vxp=mtr

http://www.ebay.com/itm/1964-1965-Co...VW7u0x&vxp=mtr

http://www.ebay.com/itm/1964-1967-Co...tW6XI9&vxp=mtr

http://www.ebay.com/itm/NOS-Corvette...tWhL2C&vxp=mtr

**Already Gone** · 05-18-2016, 05:11 PM

I appreciate all your help but t 49 and 55.00 US diallers plus shipping and what the Government takes, I pulled mine today and could blow through it so I'll keep it for now.

**FirstOwner69** · 05-18-2016, 05:16 PM

Quote:

Originally Posted by Already Gone

I appreciate all your help but t 49 and 55.00 US diallers plus shipping and what the Government takes, I pulled mine today and could blow through it so I'll keep it for now.

But, I added some that are less expensive!

Jim

**Ol Blue K20** · 05-18-2016, 10:34 PM

Ok...so my memory isn't so good.....flame arrester not a spark arrester......lol

**FirstOwner69** · 05-19-2016, 12:17 AM

Quote:

Originally Posted by Ol Blue K20

Ok...so my memory isn't so good.....flame arrester not a spark arrester......lol

Your memory isn't so bad. Spark arrester is pretty damn close! I think it sends the same message.

Rich72C10 · 09-30-2021, 05:29 PM

So my spark arrester was hardly letting any air through - it was serious caked with old oil. I have it about 90~95% opened up now I wasn't able to get it off the hose and I ended up cracking it (at the 90 degree bend).

Anyone got a lead on the hoses?

**dmjlambert** · 09-30-2021, 07:00 PM

Grumpy old man gave a link to a marine engine supply here in this post:
https://67-72chevytrucks.com/vboard/...05#post8858005
There is also discussion on that thread and some other threads about using heater hoses but I'm not sure I would take that approach because it would not be fuel and oil resistant material (EPDM rubber that Gates part #28475 is made of is not fuel and oil resistant).

05-18-2016, 01:08 PM	#1
Already Gone 70+ ( Old Skool Club ) Join Date: Nov 2003 Location: Saskatoon, Saskatchewan ,Canada Posts: 9,161	Need Name or Part Number I'm trying to keep my truck as original as possible including the emissions stuff. My truck is a 72 with 35/350 and factory A/C. On the passenger side there is a hose that goes form the Air Cleaner to the valve cover and I want to replace the "thing" that goes in to the valve cover. I know it has arcs in it but can't sem to find a listing for it and do not know the proper name of it. I would like to replace it, does anyone know where to buy one or have name and/or part number for it? Attached Images __________________ 1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021

05-18-2016, 02:18 PM	#4
Fandango Registered User Join Date: Jun 2014 Location: Memphis, TN Posts: 12	Re: Need Name or Part Number It is called a flame arrestor.

05-18-2016, 02:36 PM	#5
Valarius_Starchaser Registered User Join Date: Sep 2015 Location: Sioux Falls, South Dakota Posts: 702	Re: Need Name or Part Number whats in the valve cover on the other side generally there is a grommet and then the PCV valve in the cover while yours appears to simple be jammed into the valve cover... I have never seen or heard of a flame arrestor on a vehicle except for a race vehicles air cleaner being made of flame resistant materials but could be wrong here Here is an image of a simple PCV Valve OEM numbers could be as follows 25040145, 25040148, 25043355 __________________ "Orange Crush"

05-18-2016, 03:00 PM	#7
Ironangel Senior Member Join Date: Feb 2010 Location: Falls City, Nebraska "100 Miles From Nowhere" Posts: 2,219	Re: Need Name or Part Number Is this it? This came off of a 350ci 72' C-10 $30 shipped... __________________ Michael of the clan Hill, "Two Seventy Two's" 71 1-ton Dually 350 4-Speed 71 C/50 Grain Truck, 350 Split-Axle 4-Speed 02 3/4 ton Express 14 Indian Chief Vintage 1952 Ford 8N, "Only Ford Allowed On The Property" "Be American, Buy American"

05-18-2016, 03:08 PM	#8
FirstOwner69 Senior Member Join Date: May 2010 Location: Wisconsin & Arizona Posts: 4,854	Re: Need Name or Part Number As stated above, it's a flame arrestor. It is not considered to be a normal service replacement item. Why do you feel you need to replace it? My 1969 service manual recommends this: "Remove the flame arrestor and wash in solvent, then dry with compressed air." I believe as long as it permits the free flow of air, all is well.

05-18-2016, 01:34 PM	#2
Ol Blue K20 Proprietor of Dale's Corner Join Date: Nov 2012 Location: Vacaville , CA Posts: 16,355	Re: Need Name or Part Number If my memory serves me correctly it's called a spark arrester. __________________ "Some Days Chickens And Some Days Feathers" Dale XNGH ECV Sam Brannan 1004 R.I.P. 67ChevyRedneck R.I.P. Grumpy Old Man R.I.P. FleetsidePaul

05-18-2016, 01:49 PM	#3
saxart Registered User Join Date: Aug 2012 Location: St. Croix River Valley, WI Posts: 795	Re: Need Name or Part Number PCV valve?

05-18-2016, 03:20 PM	#11
Valarius_Starchaser Registered User Join Date: Sep 2015 Location: Sioux Falls, South Dakota Posts: 702	Re: Need Name or Part Number Okay did some more looking through catalogs and for 72 400 BBC and 350 SBC I found a flame arrestor part number 6262992 it's not shown in a diagram though or else I would have scanned one in for us __________________ "Orange Crush"

05-18-2016, 03:34 PM	#13
cypressbog Go Pack Go! Join Date: Nov 2005 Location: Green Bay Posts: 2,669	Re: Need Name or Part Number So, does the flame arrestor have a one way valve inside to prevent possible backfire flame from entering inside the valve cover?

05-18-2016, 04:21 PM	#18
FirstOwner69 Senior Member Join Date: May 2010 Location: Wisconsin & Arizona Posts: 4,854	Re: Need Name or Part Number Here's some basic patent info. Not much use though. http://ip.com/pat/US3287094 EDIT: Tis time to beat the dead horse... http://www.freepatentsonline.com/3287094.pdf Last edited by FirstOwner69; 05-18-2016 at 04:39 PM.

05-18-2016, 05:03 PM	#19
FirstOwner69 Senior Member Join Date: May 2010 Location: Wisconsin & Arizona Posts: 4,854	Re: Need Name or Part Number OK, for those wanting a new one. Gm Part #3857476 (discontinued). http://www.ebay.com/itm/Corvette-NOS...3D170965175853 http://www.ebay.com/itm/GM-NOS-1964-...-/170965175853 http://www.ebay.com/itm/NOS-Genuine-...dWnPjo&vxp=mtr http://www.ebay.com/itm/1964-1965-Co...VW7u0x&vxp=mtr http://www.ebay.com/itm/1964-1967-Co...tW6XI9&vxp=mtr http://www.ebay.com/itm/NOS-Corvette...tWhL2C&vxp=mtr Last edited by FirstOwner69; 05-18-2016 at 05:12 PM.

05-18-2016, 05:11 PM	#20
Already Gone 70+ ( Old Skool Club ) Join Date: Nov 2003 Location: Saskatoon, Saskatchewan ,Canada Posts: 9,161	Re: Need Name or Part Number I appreciate all your help but t 49 and 55.00 US diallers plus shipping and what the Government takes, I pulled mine today and could blow through it so I'll keep it for now. __________________ 1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021

05-18-2016, 10:34 PM	#22
Ol Blue K20 Proprietor of Dale's Corner Join Date: Nov 2012 Location: Vacaville , CA Posts: 16,355	Re: Need Name or Part Number Ok...so my memory isn't so good.....flame arrester not a spark arrester......lol __________________ "Some Days Chickens And Some Days Feathers" Dale XNGH ECV Sam Brannan 1004 R.I.P. 67ChevyRedneck R.I.P. Grumpy Old Man R.I.P. FleetsidePaul

09-30-2021, 05:29 PM	#24
Rich72C10 Mr. Cheyenne Join Date: Jun 2020 Location: Kyle, Texas Posts: 1,687	Re: Need Name or Part Number So my spark arrester was hardly letting any air through - it was serious caked with old oil. I have it about 90~95% opened up now I wasn't able to get it off the hose and I ended up cracking it (at the 90 degree bend). Anyone got a lead on the hoses? __________________ Richard *'72 Chevy C10 Cheyenne Super WHT/MED BRONZE/WHT SBC 350 \| TH350 \| LWB \| AC \| Buddy Seats Upgrades:** Tilt \| Front Sway Bar \| Radio \| Sliding Window \| Bed Spare w/Lock Bed Rails \| Full LEDs \| Courtesy Lights \| Tachometer \| Glovebox Lock & Light \| Head Light Relays \| *Upgraded Fully Super Trim

09-30-2021, 07:00 PM	#25
dmjlambert Senior Member Join Date: Apr 2016 Location: Cypress, TX Posts: 3,948	Re: Need Name or Part Number Grumpy old man gave a link to a marine engine supply here in this post: https://67-72chevytrucks.com/vboard/...05#post8858005 There is also discussion on that thread and some other threads about using heater hoses but I'm not sure I would take that approach because it would not be fuel and oil resistant material (EPDM rubber that Gates part #28475 is made of is not fuel and oil resistant).



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