In forth gear, the shift shaft assembly pushes the 3rd/4th shift rail forward which pivots the 3rd/4th shift fork to slide the 3rd/4th synchronizer sleeve back onto 4th gear to lock it to the counter shaft. Torque is transferred from the input shaft to the counter shaft through 5th gear and from the counter shaft to the output shaft through 4th gear.
Fifth Gear Powerflow
In fifth gear, the shift shaft assembly pulls the 5th/6th shift rail back which pivots the 5th/6th shift fork to slide the 5th/6th synchronizer sleeve forward onto the input shaft to lock it to the output shaft. Torque is transferred from the input shaft to the output shaft through the 5th/6th synchronizer sleeve and provides direct drive through the transmission.
Sixth Gear Powerflow
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.