The Torqueflight "whine"

[MB43]

Every car/truck I've ever owned with a Torqueflight tranny in it, be it a 904, 727 or 518 has had a distinctive "whine". You can hear it on acceleration, and also on decelleration.

What it is that makes that sound?

 

[THEWHITEZOMBIE]

All that raw power that MA Mopar gave are cars
MIKE

 

[Lars]

My 01 Dakota will whine in neutral when it has sat for more then a couple of days...

 

[duster340]

i have always wondered the same thing, i can hear it best in 1:st gear

 

[Guitar Jones]

It's the planetary gear sets. Since they are only used in first and second the motivation to reduce that noise wasn't very compelling.

 

[Guitar Jones]

In fact the diesel trucks have a straight cut set of planetaries in the overdrive unit. You can't hear them in a diesel truck but put that set behind a gas motor (I have them in my Dakota) and you can hear them sing. The V10's have the same 5 pinion set as the diesel but they are helical cut gears to cut down on the noise.