292 air filter vs 250 air filter - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**NewBayColony** · 04-30-2020, 09:37 AM

My 72 292 has what i thought was a 292 air filter assembly. I ordered an element for it by the year and engine size. It doesn't fit the enclosure, too big. The element in the enclosure cross references to a 250ci engine. Is it a model year difference or an engine size difference? Thanks.

old51sedan · 05-01-2020, 10:34 AM

I noticed you had no replies so I'll take a stab at this. I'm currently replacing my 250 with a 292. I'm not positive as to wether there are different sizes or not. I believe they may interchange, but they did have an oil bath breather as well. Also had different heights spaces, depending on maybe having a power brake booster, power steering, or maybe even smog pump. Shouldn't be to hard finding a filter that will fit though. These trucks have been around for 50 years and a lot of things may have been switched over the years for one reason or another.

**NewBayColony** · 05-01-2020, 10:46 AM

I have a real nice one on it now, not an oil bath. It's just funny that when I ordered an element for a 72 with a 292, it didn't fit. When I looked up the number on the element that was in it, the element was for a 250. In a Fram, it's a CA189 for a 250 and a CA192 for a 292. Apparently the canister is a little bigger for the 292. Thanks for the stab!!

**Steeveedee** · 05-01-2020, 09:37 PM

I'd expect that the 292 filter would be taller, since the engine would snarf more air. As mentioned, who knows what got changed over the years?

**NewBayColony** · 05-02-2020, 09:26 AM

Quote:

Originally Posted by Steeveedee

I'd expect that the 292 filter would be taller, since the engine would snarf more air. As mentioned, who knows what got changed over the years?

That's what I figure. The air cleaner on it is in excellent shape. I don't think you could tell by looking at them what the difference. The element is about an inch taller. I don't know how much it restricts it's breathing.
I figure I can flip the top over while doing my regular driving and see if it makes any difference. There is a 292 unit for sale on the forum for $350 and I just can't pull the trigger on it. I don't know what I could get for the 250 one.

**HO455** · 05-02-2020, 01:24 PM

I'd bet GrumpyOldMan knows the answer to this. Shoot him a PM since he hasn't chimed in.

04-30-2020, 09:37 AM	#1
NewBayColony Senior Member Join Date: Mar 2017 Location: Northbridge,MA Posts: 494	292 air filter vs 250 air filter My 72 292 has what i thought was a 292 air filter assembly. I ordered an element for it by the year and engine size. It doesn't fit the enclosure, too big. The element in the enclosure cross references to a 250ci engine. Is it a model year difference or an engine size difference? Thanks. __________________ 72 C20 292 3OTT 77 GMC 2500 4x4 Longstepper 350 4sp 50 3100 ex Airforce/Town of Mendon fire truck 72 GMC 1500 2wd short stepside 250 4sp 78 GMC 2500 4x Longstepper 292 4sp 54 6400 Chevy 5 window 4 sp 2sp vac rear end Shell oil truck/dump truck (Norman)

05-01-2020, 10:34 AM	#2
old51sedan Registered User Join Date: Oct 2015 Location: Williamston, Mi Posts: 881	Re: 292 air filter vs 250 air filter I noticed you had no replies so I'll take a stab at this. I'm currently replacing my 250 with a 292. I'm not positive as to wether there are different sizes or not. I believe they may interchange, but they did have an oil bath breather as well. Also had different heights spaces, depending on maybe having a power brake booster, power steering, or maybe even smog pump. Shouldn't be to hard finding a filter that will fit though. These trucks have been around for 50 years and a lot of things may have been switched over the years for one reason or another.

05-01-2020, 10:46 AM	#3
NewBayColony Senior Member Join Date: Mar 2017 Location: Northbridge,MA Posts: 494	Re: 292 air filter vs 250 air filter I have a real nice one on it now, not an oil bath. It's just funny that when I ordered an element for a 72 with a 292, it didn't fit. When I looked up the number on the element that was in it, the element was for a 250. In a Fram, it's a CA189 for a 250 and a CA192 for a 292. Apparently the canister is a little bigger for the 292. Thanks for the stab!! __________________ 72 C20 292 3OTT 77 GMC 2500 4x4 Longstepper 350 4sp 50 3100 ex Airforce/Town of Mendon fire truck 72 GMC 1500 2wd short stepside 250 4sp 78 GMC 2500 4x Longstepper 292 4sp 54 6400 Chevy 5 window 4 sp 2sp vac rear end Shell oil truck/dump truck (Norman)

05-01-2020, 09:37 PM	#4
Steeveedee Who Changed This? Join Date: Jan 2013 Location: Simi Valley, CA Posts: 10,279	Re: 292 air filter vs 250 air filter I'd expect that the 292 filter would be taller, since the engine would snarf more air. As mentioned, who knows what got changed over the years? __________________ ~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA

05-02-2020, 01:24 PM	#6
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 10,983	Re: 292 air filter vs 250 air filter I'd bet GrumpyOldMan knows the answer to this. Shoot him a PM since he hasn't chimed in. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377



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