Rear bearing change?
When the rear bearings are changed, some oil is lost from the rear end and must be replaced. Possibly, the oil was changed entirely by the shop when they did the bearings. At any rate, the "Friction Modifier" is worth a shot for only about $10.
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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