My 63 with 421 and 716 non ported with dual plane 2x4 offy with "750 cfm", solid lifter 248-252 @ .020 with .484 lift would run 12's. Stock fuel pump with and electric in rear. Put on 980 sd heads and a Pontiac 859 2x4 and runs low 11's. I am wasting my time going down the strip with out the fuel pump on. Only run 3/8 lines. All stock under the hood with closed exhaust. Street car
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