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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Mar 2010 Posts: 10,274 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,274 | I don't believe that foam as a replacement for an oil bath or paper filter is a suitable option. They use that foam soaked with a special greasy oil in demolition saws to keep concrete dust out of the paper filter underneath it. It needs to be removed and cleaned in the parts washer solvent after every 8 hours of use. The idle/mixture is adjusted with the greasy, oily foam and paper filter in place because this setup is very restrictive of airflow.
If you use that foam without the greasy oil on your truck, dust will move right through it.
Carl
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
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