The 742 case has shims for the pinion preload so you can just make sure the pinion is torqued to spec. Like stated above if the noise is not increasing than it is probably not eating itself and you could go crazy attempting to get rid if the noise. Some just make noise. I did a lot of ring and pinions back in the day for whining. I think Mopar stamped those things out with an axe.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost coming soon!
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
| 
