Due to many problems with the 2005 year specific case, we have come up with a solution. Many of our 2005 customers have broke the right side of the differential case only to break them again later. We change the extension housing of the transmission, the differential case and side cover to use a 2006-up differential case. As you can see from the pictures below, they are much stronger than any previous differential case. This upgrade is currently only available for the T56 transmission. The cost of this upgrade includes a Level V T56, conversion from your differential to the C6 differential, 300M LH differential output shaft, 300M RH differential output shaft and gear, HD preload springs, and full micropolish of differential internals. Choose any gear ratio available. You can also upgrade the transmission with a 9310 mainshaft for $588, or upgrade to the 30 spline Z06 shaft and 30 spline ring and pinion for $600.
$750 - Installation of any of our transmissions
Don’t be a victim of this poor design and weak casting upgrade before your stranded on the side of the road or at the track