By idkhowibrokeit
Hey folks, back again for a follow up inquiry for the wiser & more experienced mopar folk. Got my 489 rear diff rebuilt. Proper pinion load, proper backlash, one of the 6 acceptable contact patterns listed in the paperwork, 85w-140 with the friction additive, ect, & it didnt blow up in the test drive! The question/ concern is while I was listening to it while driving for any suspicious noises, the only noise I could notice was the sound of my driveshaft spinning up/ down when I was... Read more