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1973 Mustang carburetor replacement.

I have a 1973 Mustang with a 351C and it has a 2 barrel carburetor. I have a 600CFM Holley in hand. I see that you can buy adapters so a 4 barrel can replace the 2 barrel, but I'm not sure what to do. Do I buy a 500CFM 2 barrel or buy the adapter? Also if I put the 4 barrel on what other adjustments need to be made; like timing? Thanks!

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It would be easier to buy the adapter but holley al;so makes intake manifold for this problem they are pricey but you get the full 600cfms with an adapter you wont get as much oomph out of it but and adapter is a good idea especially when you dont have 300 to blow on the manifold

Posted on Oct 02, 2009

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