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Originally Posted by 69bronco
hey i need to know how many CFM my carb is, i bought a lot of 351 ceveland parts a while ago from someone and now im trying to find out what they are. The Carb. is a 4-barrel Holley the the numbers on it are 1850-3 and the other carb #'s are 1850-2. thanks.
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Both of your carbs are manual choke,
600 CFM models (with vacuum secondaries).
Holley has a website:
www.holley.com where you can research their carbs.