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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: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | This is a tough one. The symtems are classic for the plug in the discharge passage in a Model B carb falling out. But trying 3 different carbs & getting the same results rules that out. What about a vacuum leak in the plastic spacer under the carb. It needs a gasket on both sides & sometimes can have a crack in the spacer. Its possible a stuck intake valve is letting compression back up into the intake manifold.
I agree a vacuum gauge is a poor way to set timing. You will generally wind up way too much advanced.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | |
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