700R4 aka 4L60

[Mark Romans]

George M. Dailey wrote:
> 
> Since all of my bracketry is stock, I not sure I need to modify it to make
> it work properly. Standard adjustment seems to be little or no slack form
> the post that I've read. I pulled the inner TV cable untill it bottomed out,
> then opend the throttle bodie wide open and locked the cable in positon.
> W.O.T is max TV position, right?
> 
> GMD
> 
> At 10:07 PM 5/8/97 -0700, you wrote:
> >Hi George, the solution to the problem of shift points when
> >transplanting is to make the lever arm 1.174 to .950 inches from the
> >throttle shaft to the location where the TV cable attaches. Straight
> >down from the throttle shaft and .25 to .5 inches towards the rear of
> >the car. You need to cut the bracket that attaches to the throttle shaft
> >in order to bend it shorter or longer. Shorter for higher torque
> >applications. I installed a 91 Corvette SRTA in my 74 XJ12L with a 406
> >small block. I used the shorter spec for the lever arm for the TV
> >adjustment. Use standard GM procedure for TV cable adjustment.
> >
> >          X Throttle shaft
> >          +
> >          +   Lever arm
> >          +
> >          +
> >          +
> >          ++++X   TV Cable attachment point
> >
> >If I can help further let me know.   Mark.
> >
> >
> George M. Dailey
> gmd at tecinfo.com

Hi George;  The correct way to ajust the TV cable that compensates for
cable stretch and component wear (suggested by gm to be done every
30,000 miles) is to push in the tab at the ratchet and pull the cable
all the way short, then release the tab, get in the vehicle and then
push the accellerator pedal all the way to the floorl. This calibrates
the TV cable with your throttle system. If you use the throttle body to
determine WOT then you are not taking into account wear, flex whatever
in the throttle cable system. If you have changed torque curve
characteristic then the lenth or the lever arm is the easyest way to
adjust the shift points. Every click of the cable is approx 2 lbs of tv
pressure. If you have changed your final drive ratio then a governor
change may be necc. Gov pressure is related to road speed and pushes
against TV oil to determine shift points and firmness (4l60) 4l60e uses
the pcm.  Mark.