With the headers and exhaust and the (shift kit/ stall converter?), I'm still guessing high 14's at best. That's actually pretty good for a '60's car without many mods. The 390 was good for low end torque, but was not really fast in those cars.
Rev
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'66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi.
O.B.C. #2
'66 coupe
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