AIR System Removal -Brass Pipe Plugs? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bluec10 · 08-26-2009, 06:53 PM

I just removed the AIR pump and plumbing from my '69 with a 250. I got off work early today and bought a set of 1/4" brass pipe plugs at the hardware store and had a great time installing them to plug up the AIR injection ports. After all that, sober second thought kicked-in: Should I be using brass plugs? Will brass be strong enough? Will they melt? I seek thy wisdom.

mclairmo · 08-26-2009, 07:21 PM

Brass should be fine. I think the factory used brass nuts to hold the exhaust head pipes to the exahust manifolds. However, the temps outside the exhaust would be less than right inside the manifold. Rick's First Generation Camaro sells these plugs (gold ones) but not sure if they work for a 250. I use stainless pipe plugs to plug those holes (silver ones).

Zeke · 08-26-2009, 07:51 PM

Bass will be fine I have mine plug with brass plugs from the hardware store

tcb-1 · 08-26-2009, 08:30 PM

the "official/un official" plugs that Classic Industries sell are brass.
and.......
brass would actually be easier to remove, if you'll ever need to.

**'68OrangeSunshine** · 08-27-2009, 07:27 AM

I used brass plugs in the California head on my old 292. Ran it for 25 years and at least 250,000 miles. Maybe they'd have melted after 500,000 but I doubt it.

08-26-2009, 06:53 PM	#1
bluec10 Registered User Join Date: Apr 2002 Location: Manitoba, Canada Posts: 663	AIR System Removal -Brass Pipe Plugs? I just removed the AIR pump and plumbing from my '69 with a 250. I got off work early today and bought a set of 1/4" brass pipe plugs at the hardware store and had a great time installing them to plug up the AIR injection ports. After all that, sober second thought kicked-in: Should I be using brass plugs? Will brass be strong enough? Will they melt? I seek thy wisdom. __________________ Present: 2015 Tacoma. Yeah, not a GM, but I love it. 1969 GMC 32,000 - fix, drive, relax, fix... 2019 BMW R1250 GSA - Yahoooooooo 1979 Honda GL 1000 - retro touring at its best. Past: '05 Sierra 4x4 - Had 270,000 KM and running well when it was written-off by a stop sign runner. '94 F-150 from the "F word" company. I'll admit it...good truck. Sold what was left of it for $800 to a guy who came to pick it up at 11:00 PM with cash in hand. Hmm. '79 Sierra Grande (Black) organ donor - perfect rebuildable 4-bolt 350 and a good TH350. '76 Sierra Grande (Orange) - hate isn't too strong a word. Kid who bought it turned it into a hot rod. '68 C-10 R.I.P. - Dad's old truck...too far gone to resurrect. '59 C-50 - with hoist. Truck is gone, wife isn't. Nuff said.

08-26-2009, 07:21 PM	#2
mclairmo Registered User Join Date: Jan 2006 Location: Take Off Posts: 1,908	Re: AIR System Removal -Brass Pipe Plugs? Brass should be fine. I think the factory used brass nuts to hold the exhaust head pipes to the exahust manifolds. However, the temps outside the exhaust would be less than right inside the manifold. Rick's First Generation Camaro sells these plugs (gold ones) but not sure if they work for a 250. I use stainless pipe plugs to plug those holes (silver ones). Attached Images

08-26-2009, 07:51 PM	#3
Zeke Active Member Join Date: Jun 2002 Location: L.A. Lower Alabama Posts: 453	Re: AIR System Removal -Brass Pipe Plugs? Bass will be fine I have mine plug with brass plugs from the hardware store __________________ 1969 C10 350 3spd 1995 GMC 3500 XC 350 dually When Thomas Edison worked late into the night on the electric light, he had to do it by gas lamp or candle. I'm sure it made the work seem that much more urgent. George Carlin

08-26-2009, 08:30 PM	#4
tcb-1 Nothing to see here..... Join Date: Jun 2007 Location: Shawnee, KS Posts: 4,625	Re: AIR System Removal -Brass Pipe Plugs? the "official/un official" plugs that Classic Industries sell are brass. and....... brass would actually be easier to remove, if you'll ever need to. __________________ Doug THANK YOU to our American Soldiers & Veterans - POW MIA "You will NEVER be forgotten". The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. Thomas Jefferson Last edited by tcb-1; 08-26-2009 at 08:32 PM.

08-27-2009, 07:27 AM	#5
'68OrangeSunshine Senior Member Join Date: Feb 2002 Location: Tucson, AZ USA Posts: 7,304	Re: AIR System Removal -Brass Pipe Plugs? I used brass plugs in the California head on my old 292. Ran it for 25 years and at least 250,000 miles. Maybe they'd have melted after 500,000 but I doubt it. __________________ Every 25 years I like to rebuild that 292, whether it needs it or not.



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