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Mod | | | Forums66 Topics128,115 Posts1,056,292 Members48,439 | | 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
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on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
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#84317 10/15/2007 2:01 PM | Joined: May 2007 Posts: 112 Shop Shark | | Shop Shark Joined: May 2007 Posts: 112 | Hi guys,
When we speak about "heavy duty" for the GMC engine, What means in comparatives terms with the Chevy engine. I mean the people have to think that the GMC last longer?
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