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Old 03-25-2026, 03:03 PM
'ol Pinion head 'ol Pinion head is offline
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The dies that were used to stamp the snorkel changed during '69 production. The snorkel used on the '68 GTO-Firebird 400/428HO B series aircleaner (& the '68 Olds 442 aircleaner base) will have a thin long raised line across the snorkel. This detail carried on onto early '69 model 428HO aircleaner bases & on early ' 69 usage Firebird 400 bases, as well as on dual snorkel wide spread '69 GTO aircleaner bases. By mid '69 production this minute detail was gone, with the top of the snorkel being totally flat.

As mentioned above No Dual snorkels bases installed on '69 428HO B series or for that matter '69 Firebird 400's. would have to double ck, but believe the B series & GP's equipped with Instant Air option. the valve and bracketry interfered with pass side snorkel on a '69 GTO dual snorkel base.

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Old 03-25-2026, 03:52 PM
SD455DJ SD455DJ is offline
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Hey Roger! Welcome back! I never noticed that raised 'band' that goes around the snorkel that matches the width of the heat stove on the bottom and the Auto-Therm AC actuator on the top before. It is very subtle, but you can see it in the reflection on the side of the snorkel.

Dennis
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Old 04-02-2026, 02:12 PM
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HO LEMANS HO LEMANS is offline
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ok guys I truly am not trying to be a P.I.T.A. with the questions but does anyone have an actual photo of the 6485501 air cleaner I think I have one but there are no part number decals on it and I am not seeing anything stamped (if it is stamped where do I look for that?)

Thank You everyone

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Old 04-02-2026, 02:58 PM
SD455DJ SD455DJ is offline
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Quote:
Originally Posted by HO LEMANS View Post
ok guys I truly am not trying to be a P.I.T.A. with the questions but does anyone have an actual photo of the 6485501 air cleaner I think I have one but there are no part number decals on it and I am not seeing anything stamped (if it is stamped where do I look for that?)

Thank You everyone
Here you go...'69 350HO Firebird.

Dennis
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  #5  
Old 04-02-2026, 03:18 PM
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HO LEMANS HO LEMANS is offline
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Quote:
Originally Posted by SD455DJ View Post
Here you go...'69 350HO Firebird.

Dennis
well Dang I guess the one I have is NOT 5501
I was hoping the original from my 69 428 was the correct one but nope

Thank You Dennis

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Old 04-02-2026, 04:48 PM
SD455DJ SD455DJ is offline
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I don't believe there are any visible & physical differences between them all, other than the chrome lid as well as the filter type, with or without HD Air Filter (which had different numbers, 6424826/6424827 with the chrome lid). The 6424824/6424825 had the black lid on the L79 428's.

Dennis
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