You guys running A500/518/ 46R etc OD autos..........?

[67Dart273]

You guys running a 727 based OD trans especially, with manually switched TC lock and OD, how long does it take the two functions to engage / release?

 

[maca]

I am running the a518 (727) unit. I have the 3 pin plug trans. One has power going to it all the time and the other 2 get earthed when lock up or overdrive is wanted. I don't have a lock up converter but when I flick my switch for my overdrive it takes around 1 second to work. But when I switch it off it takes a while. The speed has to slow right down until it disengages

 

[67Dart273]

Great thanks. I almost "thunk" there was something wrong. This is in the project "White Whale III" which will not go into lockup or OD on the computer. No errors that I can find. So I cut the 'puter wires for the two solenoids, and had to install two junk relays from there to the +12 to keep the computer "happy."

Then leaving the +12 to the transmission, I wired the ground side of the relays to two toggles, but as you say it "takes a moment"

This is an RE, not an RH, 2001 Dodge 2500 2WD

I've been thinking of installing an "all manual" valve kit

 

[BigBlockMopar]

I've had two A518's in my Dart.
Switched OD with a simple 3-way toggle switch.

First one was OD only, took 1 to 2 seconds to engage OD.
The other A518 had OD+LU, but I had installed a TransGo-kit in it. It went into OD and LU quite a bit faster and crisper.

However I toasted the OD-unit with a wrong transmission filter so had to install my first 518 again.

Release is fairly quick.

 

[67Dart273]

When I get time I'm going to check trans pressures. I need to scare up a higher pressure gauge. Old refrigeration manifolds!!!! LOL