I'm ALMOST positive that my tranny is shifting late...but just want to make sure!
So, what do all of you that have a 440-T4 with 2.8 or 3.1 MPFI engine consider normal for your up-shift points? Mainly the 1-2 Upshift under both normal and hard acceleration.
I notice that my 1-2 Up-shift usually occurs at almost 3,500 RPMs under normal acceleration. If I accelerate hard, it can go as high as 5,400 RPMs(in fact, sometimes it feels like it won't even shift into 2nd unless I let off the gas!).
So, what's the norm?