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Old 11-03-2020, 10:49 PM
chris slawski chris slawski is offline
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Default Air cleaner base id

Hey folks
Big dummy here thought the GM 69 open element air cleaner bases were the same. The one on the left is a repo the lined up correctly on my 69 L78. The one on the right the vent tube points at incorrect angle for my application...but what is it for?
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Old 11-03-2020, 11:07 PM
Flying Undertaker Flying Undertaker is offline
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Default Air Cleaner base id

That base is for the '68 & '69 427/390 hp Corvette, the '70 Corvette 454/390 hp, the '71 Corvette 454/365 hp & 454/425 hp air cleaner. It was designed for a flat runner intake manifold.
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Old 11-03-2020, 11:59 PM
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Possibly 70 Chevelle without cowl induction. Uses bent hose to connect base to valve cover.

Last edited by DWR; 11-04-2020 at 12:01 AM.
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Old 11-04-2020, 12:05 AM
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x2
minus that the 71 Corvette LS5 uses a dual snorkle base.
If not mistaken wouldn't the chevelle have a dual snout like Dave Beem's 4300 mile LS6?
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Old 11-04-2020, 12:14 AM
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Three possible Air cleaners were used on the 1970 Chevelle LS-6.
SS~Open Element
DG ~Cowl Ind.
CO~Dual Snorkel
Take better pics of the Air cleaner on the right & post here,include close up angle of Vent tube.
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Old 11-04-2020, 12:19 AM
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Quote:
Originally Posted by Mr70 View Post
Three possible Air cleaners were used on the 1970 Chevelle LS-6.
SS~Open Element
DG ~Cowl Ind.
CO~Dual Snorkel
Take better pics of the Air cleaner on the right & post here,include close up angle of Vent tube.
I thought that Chevy stopped using the Open Element Air Cleaner on all 1970 model cars EXCEPT the Corvette in an effort to cut back on noise levels which was a mandate by the EPA.


Last edited by Lee Stewart; 11-04-2020 at 12:23 AM.
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Old 11-04-2020, 12:51 AM
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Nope.
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Old 11-04-2020, 03:57 AM
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Quote:
Originally Posted by Mr70 View Post
Nope.
If that's the case then how would you tell which air cleaner came on your LS6 without Cowl Induction?
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Old 11-04-2020, 01:03 PM
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A Build sheet will call out the two letter code of the AC installed.If not have a build sheet,nor a Cowl. Ind. hood,the dual snorkel will be the hardest to prove,as the majority norm was open element.The plant & the DATE the car was assembled can also help figure if it came with a Dual Snorkel,as a very,very small % of LS-6's did.
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Old 11-04-2020, 01:15 PM
BCreekDave BCreekDave is offline
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Quote:
Originally Posted by Lee Stewart View Post
I thought that Chevy stopped using the Open Element Air Cleaner on all 1970 model cars EXCEPT the Corvette in an effort to cut back on noise levels which was a mandate by the EPA.

1970 Camaro L34 had an open element AC. Nova also I believe.
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