kickdown cable on a chevy 350?

[klwebb]

okay, my 1971 c10 w a 350/350 is finally running! sorta. it starts up, runs fine, but isnt responding like it should when im on the gas? if im slowly accelerating and then punch the gas it sputters and dies, but if i slowly accelerate until its on the floor its fine but still doesnt go as quick as it should if that makes sense? i have the kickdown cable installed (mostly) and while it was parked i tried punching the gas and it didnt die, but i had a friend say that the kickdown couldnt be the reason for that. any tips and advice would be awesome. im a 16 year old girl and no one around me knows much about my truck