i recently installed my 4k springs in my 97 auto and you can't go past 3200 in drive tranny won't let you unless you adjust the shift points, in nuetral i probably could rev out to 4k but since i didn't put the 60lb valve springs in that came with my kit, i just don't rev my engine at all in nuetral, and the sensitivity of the throttle depends on how many clicks you tighten the retainer nut. i have mine at 5 clicks total and its pretty touchy, but i wanted it that way.

 

HOw well do 4ks idle?

95dodgectd is your trans stock?