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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!
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| | | | Joined: Mar 2014 Posts: 4,485 Moderator, Electrical Bay | | Moderator, Electrical Bay Joined: Mar 2014 Posts: 4,485 | Can you tell us more, Ken? Do you mean backfiring? Often that can be caused by a too lean condition and that would be supported by the need to give it more gas. As for the Pertronix, I'm not a fan of those, but we'll ignore that for now.
Carburetor? Rochester B? Have you checked for intake vacuum leaks? Maybe at the carburetor to manifold? That will cause a "too lean" condition.
~ Jon
1952 1/2 ton with 1959 235 | T5 with 3.07 rear end
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