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Click on image for the lowdown. 
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| | | Forums66 Topics128,037 Posts1,055,582 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: Feb 2019 Posts: 87 'Bolter | | 'Bolter Joined: Feb 2019 Posts: 87 | I did verify with older engine pictures that I have that I was hooked to ported/timed vacuum. Everything I'm reading says I must have changed it to manifold/full vacuum at some point between when I changed it and it caught fire. I know for a fact that at idle timing would go beyond my capabilities of reading with my timing light. | | |
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