Eight Speed Automatic

I`d like to see someone come up w/ a 4th gear adapter that does nothing but THE 4TH GEAR, NO SPLITTING OR EVEN WORKING IN THE OTHER TREE GEARS ON A 727, THAT WILL TAKE SOME SERIOUS H.P. . (as always disregard the caps)

Can you explain what you mean? The ratios on a 727 based (A518/46RE) are such that 2nd gear OD and 3rd gear non OD are essentially the same overall ratio
If you have a 46RH version, you can get them to work easy, just solenoid control. Shifting the later RE, tho requires a computer OR I HAVE BEEN TOLD you can get a manual VB for them.