Overdrive transmission

[terry_208]

1.  Are there any other seals on the 3 speed o/d transmissions than the o-ring on the speedometer cable and the tail shaft seal/dust cover?

2. Does anyone have o/d wiring schematics?

[hiball3985]

There is a small seal were the solenoid actuation arm goes into the trans.
I have a wiring diagram somewhere, I'll try to find it.

[thomasso]

Also A seal for the O/D selector lever.

[thomasso]

You didn't say if you have a t-85 or T-86 but I believe both have shift lever seals also.

[terry_208]

You didn't say if you have a t-85 or T-86 but I believe both have shift lever seals also.

Correct.  I have one of each but just happen to have the T-86 sitting on the floor beside the car.  That's the one I'll probably install.     

Thanks for the replies. 

[thomasso]

The T-85 is a much stronger transmission.

[hiball3985]

X2 on the T85 and the seal is the same for all..

[Ecode70D]

Terry
      X3 on the T85 transmissions.
      If you have a T85 transmission, you should use it.    Back in the old days,  the T85 cured my problem of blowing up
countless transmissions.  Jay

[terry_208]

I realize the T-85 is a much better transmission but I was hoping to save it to put behind a 351, later.  The stock 302 is rated only 7 hp more than the 223.  However, IIRC, one is rated at the flywheel and the other is rated at the tire or something like that.  I'm still trying to decide which to install behind the 302.  According to the parts guy, they take the same seals and are fairly cheap.