I took out a pin and done some cipherin and figgerin for getting a TKO over here and installed. Over $6000 at the end of the day. I could rebuild a T5 with upgraded guts from GForce but that retrofit would still be $4000 plus.
I looked into an AOD and although cheaper to purchase and install than the T5, still over $2500. So I have opted to completely redo my C6. I will get a new 6 pinion planetary gear assembly from an E4OD. This has a 2.71:1 first, 1.53 second compared to 2.46:1 first and 1.46:1 second that you find in the stock C6, upgraded R servo, pump, valve body, clutches and bands, for under a grand. With a nice TC from edge racing, my total price will go to under $2k for the parts and installation. This way I have room to accomodate my World Man O War 427 (one day, over the rainbow) if my wife every goes crazy and lets me do it.
One thing that I would like to share is that when I was considering a built C4 to swap in place of my power hungry C6, I called TCI and asked what their shop experience was with any differences between the C4 and C6 with respect to drivetrain parasitic loss. The tech guy told me that their C4s make between 10-15 hp more than their C6s when behind the SAME engine. Pretty eye opening.
I looked into an AOD and although cheaper to purchase and install than the T5, still over $2500. So I have opted to completely redo my C6. I will get a new 6 pinion planetary gear assembly from an E4OD. This has a 2.71:1 first, 1.53 second compared to 2.46:1 first and 1.46:1 second that you find in the stock C6, upgraded R servo, pump, valve body, clutches and bands, for under a grand. With a nice TC from edge racing, my total price will go to under $2k for the parts and installation. This way I have room to accomodate my World Man O War 427 (one day, over the rainbow) if my wife every goes crazy and lets me do it.
One thing that I would like to share is that when I was considering a built C4 to swap in place of my power hungry C6, I called TCI and asked what their shop experience was with any differences between the C4 and C6 with respect to drivetrain parasitic loss. The tech guy told me that their C4s make between 10-15 hp more than their C6s when behind the SAME engine. Pretty eye opening.