So I got under my car today to install my Monster transmissions 700r external lockup kit since I just swapped TBI to Carb . Per directions I was supposed to pull the plug out of the 4th gear test port on the side of the tranny on the passenger side. 1 problem mine does NOT have a 4th gear test port on the side of the trans. WTH ? So I read around on the net and apparently some don't. A few people recommended drilling and tapping the 2-4 servo cover and placing the pressure switch that comes in the kit in that cover. Has anyone tried this method here ? Is it safe and will it have the correct - adequate pressure there to activate the switch ? Thanks for the urgent help needed !!!!!

 

Looks like you can drill tap and install the overdrive pressure switch on the 2-4 accumulator servo cap as it is only pressurized during the 4th gear activation. See animation here . So this is what I will have to do . http://www.transmissioncenter.org/70..._transmiss.htm

Apparently earlier 700r 's had the 4th gear test port cast into the trans body BUT later ones did not..... . Mine is a 1991 and has no test port.