91 RS 700R no 4th gear test port ???????
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Member

Joined: May 2013
Posts: 232
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From: ORLANDO FL
Car: 91 RS VERT
Engine: 305 9.67 2.02 58 cc 282 480 108 LC
Transmission: 700R4
Axle/Gears: 4.11 POSI
91 RS 700R no 4th gear test port ???????
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 !!!!!
Thread Starter
Member

Joined: May 2013
Posts: 232
Likes: 0
From: ORLANDO FL
Car: 91 RS VERT
Engine: 305 9.67 2.02 58 cc 282 480 108 LC
Transmission: 700R4
Axle/Gears: 4.11 POSI
Re: 91 RS 700R no 4th gear test port ???????
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.
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.
Last edited by sootie007; Jun 16, 2014 at 01:31 PM.
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