66, I'm guessing mid 15's. I assume you've got a 2.80/1 or 3.00/1 open rear axle. Remember the 289 Hipo K code cars with 4 speed and Traction-lock only ran 15.6-15.8 back when they were new. Of course they were saddled with bias ply tires too. Is your cam stock?
Rev
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'66 Coupe, 306, 300 HP, C-4, 13.97 e.t., 100.3 mph
1/4 mi.
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