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I have a long time problem with my drive train since I have changed my rear diff for a RPM 3.90. It makes a huge noise. RPM have sent another rear diff, but the noise is here again, and it seems to be the rear diff again ... Noise heard only when decelerating.
I have been proposed a full swap of my drive train (gearbox, shaft, rear end) from a Corvette C6 LS2 2006 Model with 10.000 miles (my car has 57.000 miles). Cost : 5700 USD all included.
Do you think this is a good idea?
What are the differences between the C5 drive train and the C6?
Never changed the gears on a rear diff in a vette, but if it's anything like most other diffs, the noise is most likely a result of the lash on the gears not being set correctly. Who installed the gears in the diff?
there are some writeups about what's required to swap C6 stuff into a C5, and as for gear ratios in the transmission, it depends on your car & the donor:
C5 base = C6 base/Z06
C5 Z06 = C6 Z51