omg the new tentioner for the 3.5 is freakin strong i had a friend pull on it after installing it he barely budged it. ok here what happend the pully on the original tentioner stoped turning and ate the belt. ok after install the spring is freakin strong it didnt want to move with the belt tentioner. but got it fixed and running great didnt know the new springs could be so strong on a side mount engine.