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Mod | | | Forums66 Topics128,050 Posts1,055,673 Members48,426 | | 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 2013 Posts: 21 New Guy | | New Guy Joined: Jan 2013 Posts: 21 | Iam looking at buying the holley 390 cfm carburetor for my 3100 1st series pickup. I have a 600 cfm on there now and I think it is a little too much carb. I would think the mpg would be better. Any ideas on the matter? I do have a little RV cam in now .
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