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Mod | | | Forums66 Topics128,108 Posts1,056,236 Members48,437 | | 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: Aug 2012 Posts: 1,214 Shop Shark | | Shop Shark Joined: Aug 2012 Posts: 1,214 | My 216 had a whole lot more smoking through the valve cover vents when I 1st got it running. Blowby was so bad it smoked through all 3 slots when running as wll as when shutdown.
Now with about 1500 miles on it and a PCV valve mod theres very little noticable blowby when running.
I also upped the thermostat from 160 to 180 and this seems to have helped too.
It still steams after shutdown but nowhere near as much as before, pretty much like the posted vids above.
Dave
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