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Carburetor CFM
My ‘70 c10 has an small block 400 in it. I want to replace the carburetor with an Edelbrock AVS2 but I am torn between the 500 and 650 CFM versions. The engine is stock as far as I can tell. Looks the original heads, rams horn exhaust manifold, original intake. I have no idea if it has ever been rebuilt but I kind of doubt it. From my understanding the 400 doesn’t like to rev high so I am thinking the 500 cfm may be the better choice but I don’t want to go too small either. Any advise would be appreciated.
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