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Old 06-24-2008, 08:56 PM
hersch710 hersch710 is offline
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vacuum 307 L chevy

I replaced my carb on my 1971 chevy 307 with a 1973 carb there not exactly the same the 1973 has a threaded hole in the back side closest to the firewall near the base of the carb does anyone know what this hole is for and if i can plug it also there are more vacuum ports on the new carb
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