The throttle is electronically controlled. No cables or linkage. The only way to get rid of the lag time is to get a Superchips Flashpaq. You can also firm up the shifts, raise the shiftpoints, raise the rpm limiter, set the speedo to the diameter of your tires, and much more.
I am assuming you have a 5.7 Hemi?

Go here and join in on the Mopar fun. Do searches and you will most likely be able to answer all your questions.-->

http://www.lxforums.com/board/index.php?

and here--> http://www.dodgeforum.com/

Good luck, Mad`