Engine/Transmission (1998.5 - 2002) line pressures and input shafts

[StakeMan]

Does high line pressures increase the likely hood of input shaft breakage?

 

[Fireman Dave]

Depends on what kind of oil is in it.

 

[StakeMan]

ok,



Anyone who has a tight converter.

 

[Strick-9]

Input shaft breakage comes usually from torque spikes.



This includes locked shifting and large rpm drops from fluid coupling into lockup under heavy throttle.



The 2000 and later trucks that shift locked to locked from third to overdrive are actually breaking input shafts with stock power.



Tight converters have a smaller RPM drop from fluid coupling to lockup and are less likely to break a shaft during lockup engagement.



Did you break an input shaft? There seems to be a lot of input shaft breakage lately behind the scenes.



-Chris

 

[StakeMan]

No breakage here. Still have the stock shafts in my 01. Just curious.