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Click on image for the lowdown. 
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| | | Forums66 Topics128,051 Posts1,055,705 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: Jun 2012 Posts: 1,747 'Bolter | | 'Bolter Joined: Jun 2012 Posts: 1,747 | We lived in N.M.for years(7000 feet). Dads 50 was just fine(no fussing with any thing) I live at 5000 feet here in sunny Utah. Often drive over a 10000 foot pass to visit friends. Still tune to the book and still have a stock Rochester. A non issue. You will notice a small drop in power, thin air. No need to re-jet. Might need to make a small adjustment to timing, if it pings. And you might not need to do anything.
Steve H
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