603S Engine

[Kevin H]

Originally Posted by GREG

"The additional torque required not only a heavier propeller shaft: the Torqueflite 3 speed automatic gearbox was uprated with the 440 cubic inch engine's torque converter and internal clutches."

I could be wrong, but I don't think the 727 had specific internal clutches or a special torque converter for the 440, or for any other engine for that matter.

Maybe the 603S didn't have a 727 transmission! Maybe it had an 904 or a 998. Now those would need beefing up, but surely you would just use a 727 instead...