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Click on image for the lowdown. 
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| | | Forums66 Topics128,259 Posts1,058,299 Members48,485 | | 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!
| | THANKS!
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: Mar 2010 Posts: 1,660 Curmudgeon | | Curmudgeon Joined: Mar 2010 Posts: 1,660 | It began in Yahoo Groups, then moved to the website and now the new generation has it on Facebook.
I'm not allowed in because I'm not a Facebook member but my guess is that any old technical info is gone.
All I can see is member's photo albums.
"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."
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