2020-B2-3

Author Topic: 301 to 400 Air Cleaner Base  (Read 327 times)

Seven

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301 to 400 Air Cleaner Base
« on: March 29, 2020, 08:55:56 AM »
I'm building a Pontiac 400 to swap into my 1979 301 4 speed Trans Am.  Will my shaker work with a '78 or '79 W72 air cleaner base, or will I need both the W72 shaker and base?  The build uses the stock '79 intake manifold and Quadrjet carb.
LT4 Firehawk
1979 Y84 T-top Delete
1972 Esprit 455 HO

Steve B

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Re: 301 to 400 Air Cleaner Base
« Reply #1 on: March 30, 2020, 01:16:38 PM »
Below is a pretty good write-up that may give you some insight.  I believe the bottom line is that you'll be able to use the hood scoop from your 301, but you'll need a base from a 400 which will more than likely require some modifications to make it all work.  It is possible to do as I had a 400 installed in place of my 301 in my 1980, but I didn't do any of the actual work.  Good luck...

http://transamcountry.com/community/index.php?topic=78929.0
Steve
1980 Trans Am, 400, TH400 auto

firebirdparts

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Re: 301 to 400 Air Cleaner Base
« Reply #2 on: March 30, 2020, 11:04:32 PM »
The metal part of the shaker scoop/lid/whatever is different, but not by much.  The 301 shaker should end up a little too tall on the W72 air cleaner.
I want to be like Paul Kenny when I grow up
Joe Bays
1977 Y82 4-speed (red interior)
1978 Skybird 350
1978 Redbird 305
1979 Redbird 301 4-speed
1992 Lincoln Mark VII LSC/SE (red)
1970 Datsun Pickup
1953 Chevy pickup (converted 4x4)
1988 T-bird Turbo Coupe

Seven

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Re: 301 to 400 Air Cleaner Base
« Reply #3 on: March 31, 2020, 05:17:30 PM »
It looks like I'll be able to use my shaker with a new metal base for the Pontiac 400 from OER, in combination with a '78 or '79 W72 air cleaner  base.

Thanks for the replies

Seven
LT4 Firehawk
1979 Y84 T-top Delete
1972 Esprit 455 HO

Re: 301 to 400 Air Cleaner Base
« Reply #3 on: March 31, 2020, 05:17:30 PM »
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