[donald1950]

i have a 53 victoria and it has an OD that i put a on/off switch under the dash on the Govenor lead that open the path for the relay to operate so it wont energize the relay and operate the OD soloniod in town. i leave the OD cable IN so it fee wheels when the switch is off and when i get on the freeway i just flip the switch to on and everything works fine.

the reason i choose to do it this way is if you look at teh wireing diagram for teh OD you will find that even when you pull the OD cable out to disengauge the OD function all the operating function of teh relay and solonoid is still functioning and teh relay will still operate at 27 mph and the solonoid will still be energized but just will be locked internally out from operating the OD

i also have an 8" differental and 3.5 gears.... with a 350 SBC in front of the Ford OD trans....