The only way I personally know of going around the low manifold vacuum for a better modulator signal is to use a pre-1961 LX (not as strong as the 61/ LX) as they were controlled by Throttle Position Linkage or make the valve body manual shift which would be a pain after awhile (to me).
Here are your info source(s);
BROADER PERFORMANCE TRANSMISSIONS
http://www.broaderperformance.com/
(You will most likely be better contacting him directly)
FORD TRANSMISSION FORUM
http://www.network54.com/Forum/260730/
Now you know how the rules work here...anything you learn must be shared...
