Im running the stock 8.6 rearend with 3.73 gearing and I have a truetrak locker in there. It seems to be doing fine but I do need to get a driveshaft because its still stock.
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Man, I am completely surprised that your stock 10 bolt 8.6 rear is holding up so well!
Good to hear! Better you than Garrisson (Lamborado)--cause when I put his Detroit TrueTrac in on Saturday, his truck's rear end looked kinds beat up--but he beats on that thing constantly. He had about 10k miles on the rearend when I replaced the G80 with the TrueTrac and there was trash all in that thing. His G80 was about to take a HUGE dump on him soon also--it was only a matter of time...