Seller notes

This sale is for a good used Holley primary metering block for a 600 CFM 4-barrel. It has stamp number 8485 and 18501. I have run across this set of number before and the nearest I have been able to relate it is a Holley 1850-1 or 2 Universal application carburetor. This item has been surface-cleaned and all passages appear clean. Still needs carburetor cleaner spray / soak. INCLUDES: idle mixture needles, jets, power valve (although old) and a side brass vacuum line fitting. I have extra parts ...

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