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Mod | | | Forums66 Topics128,049 Posts1,055,546 Members48,425 | | 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: Mar 2011 Posts: 25 New Guy | | New Guy Joined: Mar 2011 Posts: 25 | This might sound dumb but i dont know so im asking, i was looking at some replacement valve covers for my 250 but theres a 3rd hole in the side of the cover, mine thats on my enginge now, the original doesnt have this hole in the side. JW what its for?
1966 GMC
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