Posted 1/17/2017 20:01 (#5775192 - in reply to #5775008) Subject: RE: 5.9 cummins and allison AT545
sc ks
545 has no lockup converter. I have one in a f650. Lots of slip but keeps on ticking. And cheap to replace. Top gear is 1 to 1 and slip is about 10% on mine.