As per GM Powertrain:
16%......ZF6
15%......4+3
17%......700R Automatic
15%......Tremac 6-speed Manual
18%......Getrag Automatic
Article ID: 487
Created: July 24, 2014
Last Updated: July 24, 2014
Online URL: https://www.corvetteactioncenter.com/tech/knowledgebase/article/1984-1996-corvette-parasitic-driveline-loss-on-a-dynamometer-487.html