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Click on image for the lowdown. 
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| | | Forums66 Topics128,140 Posts1,056,466 Members48,441 | | 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 2014 Posts: 3,689 'Bolter | | 'Bolter Joined: Jan 2014 Posts: 3,689 | I had a similar problem a few years back. The whistle turned out to be a small vacuum leak at the air horn gasket due to warpage. Air horn to air cleaner?
1951 3100
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