Cass told me that once. I tried readjusting them, but he was right....I had a friend, since passed, who owned a rearend shop. He told me that if initial setup isn't right, and gears howl, they will ALWAYS howl from then on, no matter what is done to setup. Only solution is new gears.
I have a new Strange 60 with 3.54's and it is perfect. Have another Strange 60 with 3.23's and it has a whine from 2100-2400 rpm. Been that way from new and hasn't changed a bit. It's just a crap shoot with all these gears nowadays imo.Just wanted to chime in, my brand new Strange S60 with spool and 4.56 gears has a whine on decel that sounds like an ambulance coming up behind me. Kinda reminds me of my moms Rambler wagon when I was a kid.
Can’t hear it with open headers though.
Well, I took the shop owner for a ride and he said it was definitely gear noise. It does make a bit of noise on coast down too - just not as loud as the Richmond’s. He and his mechanic said they were factory lapped gears and set up real easily - both are standing by that the position the pattern looked as good as you can get. They replaced one pinion bearing and I asked if maybe the other was bad. They said all the other bearings were fine. They mentioned all the same things about gear harmonics, sad state of aftermarket gears, etc. He said they are seeing it in new vehicles too and 40 to 50 seems to be a common speed for noise. He checked on the gears he normally uses (Revolution) but they stopped carrying 8-3/4 gears several years ago. He said a used, OEM gear set might be my best bet. I wish now I had kept the old 3.23 set.
He said they would be glad to take another look at the pattern if I wanted to pull it again just to double check it. He said they might be able to play with the pattern a little to get it better but it’s just trial and error and might get worse and might take several attempts with no promise of success. I told him that after pulling and replacing it 4 times already I might as well do it again and we can just look at it and we can then decide then whether to mess with it. He seemed willing to help.
After that he recommended some noise insulation under the seat and at the trunk divider. He didn’t mention louder pipes though.
yes preload on the pinion. I don't have the spec for you but the preload is different depending on wether or not you are reusing the old bearings or installing new bearings. There may be information from the gear company you used or it may be in a Mopar service manual for your year vehicle. To give you an idea the preload for used bearings is probably around 10 inch/lbs and for new bearings maybe 18 inch/lbs but look it up because that's just a guess to give you an ideaAre you speaking of the pinion bearings?