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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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| | | | Joined: Nov 2001 Posts: 481 Shop Shark | | Shop Shark Joined: Nov 2001 Posts: 481 | Hello K10
I recently replaced the exhaust on my 228 GMC and I did determine that the exhaust manifold flapper that directs heat to the intake manifold was CLOSED when the flapper weight was toward the PASSENGER side.
If I understand your post correctly, your install is correct. | | |
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