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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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#27942 09/03/2003 2:54 AM | Joined: Apr 2002 Posts: 13 Junior Member | | Junior Member Joined: Apr 2002 Posts: 13 | I own a 54 GMC truck and have had nothing but trouble with my Zenith downdraft carbs. Keep flooding out, run great and then flood out all of a sudden. I have taken them back to the carb shop twice and still the same result. I was told to dump the carb and purchase a Holley 390 CFM carb and new 4 barrel mainfold from Patricks. I was also told that the correct carb is the Holley 8007. Has anyone tried this and will it eliminate my troubles or cause me a whole new set of problems??? I have heard that the 4 barrels flood out too. Confused
My enigne is a 248 with the head casting # 2194819.
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