ive got a 96 sir and i recently had ITR cams put in it, i put in new duel springs and retainers. The distributer needed a slight adjustment to fit the new cams.....................

Basically my car revs to 5000 rmp then its as if the rev limiter kicks in and the revs bounce. if you hold the accelorator down it will relucteently go up the rev range slowly.

if your in say 3rd gear and drop it so that that revs come in over 5000it will rev properly untill you have to change gear

Any one know why?