Thread: Moan n groan
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Old 04-12-2021, 07:53 AM   #3
Inferno dogg
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Drives: 2010 Camaro 2SS
Join Date: Mar 2018
Location: Michigan
Posts: 155
Originally Posted by Avenging Orange View Post
Had my new 3.91's for a 500 miles on em and changed gear oil. Did a little driving and a few figure 8's. When doing this they got a lot of groan. Is this typical of new gears?

My Yukon 3.90 gears scream at me!!! I also have heavy duty diff cover and poly bushings.
GPI SS3 cam with top end goodies,Circle D 4c 3800 w/Derale trans cooler kit sold by GPI,3.90 yukon gears,Kooks long tube headers,Roto fab cold air intake, Corsa extreme 3" cat back, Dyno tuned by Andrews Auto Georgetown MI, Heritage Grille, T4 splitter with under tray, Anvil spoiler,MRR 228 reps with Nitto NT555G2 tires 315 rear 275 fronts,BMR poly bushings,HD Diff cover from RDP,Raytech install kit
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