Recent content by mbaird

In my research while building the control unit I came across a number of posts lamenting how the OD would cycle in and out . The timer delays were a suggestion by a poster that said they would eliminate it so I mimicked his idea. I have not tried it with 2 pressure switches although I have 2...

Mine is pretty close to the same so far . I don’t think I want to experience acombo of full throttle and a2 gear drop at 65 mph … lol. Not with a 408 pushing 425 hp

Do you plan on producing them for resale ? Should be a big seller !

The timers eliminate the need for 2 pressure switches and are supposed to eliminate the tendency for the systems to cycle in and out when at speeds close to the engagement set points. But if the timers delay both the engagement and disengagement that could be my issue. Unfortunately the...

3.55s… 3.91s might prove too deep with the 3.09 1st . Personally while I like the OD if you don’t care about mileage or hiway driving I would swap to a normal 833 and run 3.91s .

I ran a line to the engine bay and used a small box to house everything which is mounted on inner fender .

The timers help prevent the OD from phasing in and out when driving close to the engagement speed .

Yep … have a vacuum gauge . I think the vacuum aspect of it is working fine . Of course on deceleration the vacuum climbs but if I blip the throttle both OD and LU disengage.

They disengage simultaneously with about 1/3 throttle at hiway speeds. The vacuum switch cuts the power then reingage when the vacuum goes bacck to full hg + the time delay

Maybe I will install a NO brake switch inline with the master power switch?

yes, new install. Gotta say it works great! If only it would just drop out when my speed drops. It’s just a matter of time before I forget to turn it off when I come to a stop.

I wonder if my delay timers delay in the disconnect mode as well for the set amount of time ? Maybe I will try adjusting them to 5 seconds for O/D and 7 for L/U to see what happens …..

Using manifold vacuum port and line pressure test port on passenger side of transmission.

I assumed the line pressure drops as you go slower . Line pressure goes up 1 psi per mph ( depending on gear ratio and tire size ) so when it hits 46 psi or approximately 46 mph the 46 psi pressure switch initiates the OD/LU engagement. I use 2 timers set at 10 and 15 seconds to stagger the OD...

It’s sealed enough to prevent want intrusion but not airtight. It works as designed for engagement and kicks out with enough throttle pressure so the vacuum switch doesn’t seem to be the issue . It just won’t disengage when I slow down unless I turn the master power switch off . And sometimes...