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| | | Forums66 Topics128,042 Posts1,055,602 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: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | If the idle doesn't change when you hook up the vacuum tube then you have it on ported vacuum or the vacuum advance chamber is defective. Ported vacuum does not have vacuum at idle. Actually the engines in 60 series trucks did not use vacuum advance. If you like the way it runs with full vacuum advance you can use it that way.
George
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | |
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