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Click on image for the lowdown. 
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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: Aug 2012 Posts: 1,214 Shop Shark | | Shop Shark Joined: Aug 2012 Posts: 1,214 | On the drivers side of the carb towards the bottom is the idle speed adjusment screw. It is on the linkage. turn it CW to increase rpm and CCW to decrease rpm.
You want to set your idle between 450 & 500 rpm.
Good luck
Dave
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