[66-PMD-GMC]

Originally Posted by LostMy65

That is a long tranny dipstick tube.
I'm going to need the same thing beings I need to get past the heater box in the engine compartment.
Do you remember which one you have?
Do you know if the th350 will accept the same one?

That, my friend, is EXACTLY why I chose that particular tube
Sorry to say but I don't believe that the tubes interchange.
I picked up 2 700R4's for $400 and one is in excellent useable shape. The other may get sold.
The 66 I did with the 700R4 (4l60) sits right on 2400 RPM at 65 MPH...
The final OD gear makes the truck a sweet cruiser..
The first gear in those units puts a bunch more gitty-up in the trucks git-along that's fer sure..