Originally Posted by SUX2BU
Search is your friend.
- 1/3 of SS was upgraded/improved for ZL1. The tranny is probably the same (or very
closely related) as CTS-V's (the same goes either A6 or M6). The rear is a new cast-iron case with probably a 14-bolt differential. The rear cradle bushings have also been improved.
That's a scratch on the surface of what's been improved for ZL1
"...What IS true: We anticipated that this would happen - we are never finished - and yes, Ford DOES deserve to win now and then. To think that GM can come out with a car to make ford throw in the towel is simply foolhardy..." - fbodfather