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Click on image for the lowdown. 
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| | | Forums66 Topics128,077 Posts1,055,932 Members48,430 | | Most Online14,466
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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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Jan 2019 Posts: 2,242 Herder of Cats, Goats, and Sheep (moderator) | | Herder of Cats, Goats, and Sheep (moderator) Joined: Jan 2019 Posts: 2,242 | I’d like to see some actual numbers on the air flow between k&N filters vs paper filters. Maybe you can supply us with the flow bench results Let me see if I can find them. I saw a set of tests done on larger ones (for the 03-06 Duramax) and the K&N had both the worst flow and let the most dirt through. It was 3-4 years ago. | | |
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