66 Belvedere drive shaft length

[TonyB]

i had a vibration, took the drive shaft to the shop and had it balanced. he stated it appeared the bushing in the 727 was worn. The seal was intact and not leaking though, i did order a new yoke and it seemed the drive shaft was too short based on how much of the old yoke was sticking out of the trans. Checked this website and found a chart that stated the drive shaft in a 1966 Belvedere with a poly 318/727/8 3/4 combination should be 55.42". The shaft in my car is 51" and with the new yoke we measure 51 5/8. (Yoke pulled out of trans 1" and car on the ground) any thoughts or if anyone has a 66 Belvedere with this combination that could shed some light on the situation I would appreciate it.

 

[Vaanth]

i had a vibration, took the drive shaft to the shop and had it balanced. he stated it appeared the bushing in the 727 was worn. The seal was intact and not leaking though, i did order a new yoke and it seemed the drive shaft was too short based on how much of the old yoke was sticking out of the trans. Checked this website and found a chart that stated the drive shaft in a 1966 Belvedere with a poly 318/727/8 3/4 combination should be 55.42". The shaft in my car is 51" and with the new yoke we measure 51 5/8. (Yoke pulled out of trans 1" and car on the ground) any thoughts or if anyone has a 66 Belvedere with this combination that could shed some light on the situation I would appreciate it.

According to the 1966 Chrysler Parts Catalog:

The length of the driveshaft in a 1966 Belvedere, except station wagon, with 318 engine, A727 transmission, and 8-3/4" rear axle is 51.28 inches.

The 55.42 inch length corresponds to a Belvedere with a 273 engine and A904 transmission.The A904 is shorter than the A727.

 

[TonyB]

This is what i was referencing, your number is right on.

 

[TonyB]

This is what i was referencing, your numbers are right on.

 

[R413]

Those numbers in post #5 are wrong.
You won't get a 55" driveshaft to go in that car, too long.

51.5" is the right length

 

[TonyB]

Sorry for the duplication, your measurement comes up in this chart here, Not sure what the 745 refers to?

 

[TonyB]

And you are correct it would be too long, there is also a 3/4 inch steel disk as part of the front yoke portion of the drive shaft, any idea what that is for?

 

[Dako]

And you are correct it would be too long, there is also a 3/4 inch steel disk as part of the front yoke portion of the drive shaft, any idea what that is for?

Harmonic balancing.

 

[R413]

745 is a 3 speed transmission