Read this tech tip - - - -repeatedly if necessary- - - -and follow the gentleman's instructions to the letter.

http://www.cpttransmission.com/tech_tvcable.htm

It's a better tutorial than even a few GM training center classes I've attended have accomplished. He even goes into the geometry of fabricating a bellcrank to install a 700 in situations where it didn't fit originally. The rate of movement of the cable is just as important, or maybe more so, than its specific length for various throttle positions.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!