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01-28-2008, 03:09 PM
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#1 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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air filter question
Is the air filter/cleaner assembly the same on small blocks and big blocks?
If not, can anyone tell me/show me how to tell them apart? Are the BB ones worth anything? |
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01-28-2008, 05:38 PM
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#2 |
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Registered User
Join Date: Aug 2006
Location: Bakersfield,CA
Posts: 7,893
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Re: air filter question
i want to say yes but i dont really know
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-steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME |
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01-28-2008, 11:19 PM
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#3 |
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Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Re: air filter question
Andy,
As far as I can tell the big block air cleaners are the same as the small block ones. Here is a picture of an original 72 BB air cleaner in my son's truck. Jim
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1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC |
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01-28-2008, 11:50 PM
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#4 |
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Registered User
Join Date: Jun 2002
Location: central pa
Posts: 1,525
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Re: air filter question
The only difference I have seen is if it had a 2bbl carb. I think they had a smaller center.
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72 longhorn c30 502BB/th400/fact air/4.11rear/ custom camper 72 bug(the better half's) under reconstruction 2009 HHR aqua blue 71 GMC k20 350/sm465 2009 Chevy hd3500 6.6 Victory Red crew cab dually Dave & Jeanne |
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01-29-2008, 12:03 AM
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#5 |
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Registered User
Join Date: Sep 2005
Location: Canton North carolina
Posts: 3,080
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Re: air filter question
The only difference is the valve that is clamped onto the riser assembly of the spacer under the air cleaner (the part that goes into the valve cover) Big blocks have a metal elbow and are hard to find if you dont have one, sb use a valve and a molded elbow in the rubber hose. The only people this will be valuable to are the ones looking for a correct restore. If you ar planning to replace with chrome etc. save it you never know if you sell the next guy might want to put it back.
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01-29-2008, 04:23 AM
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#6 |
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Saving 1 truck at a time!
Join Date: Aug 2001
Location: Kent, WA
Posts: 6,465
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Re: air filter question
No difference shown in 1968 Service Manual between engine size...only 6 vs. 8 and heavy trucks vs. light trucks.
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'68 C20 Longhorn 50th Anniversary 400/TH400 '68 C20 Longhorn 50th Anniversary 468/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '69 Flxible Cruiser (look up ugly in the dictionary) |
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