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Click on image for the lowdown. 
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| | | Forums66 Topics128,074 Posts1,055,914 Members48,429 | | 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: Dec 2014 Posts: 678 'Bolter | | 'Bolter Joined: Dec 2014 Posts: 678 | How about an exhaust manifold leak? They can sound like a knock. I can confirm that. A cracked exhaust manifold on my Astro van sounded for all the world like a rod knock.
1951 Chevy Panel Truck
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