I understand what k-factor is in a torque converter:
Torque Convertors - Thrasher Engineered Performance 3800 & 3800SC Pontiac Grand Prix GTP & Buick Regal GS
Looking at charts of 4T65E applications:
GM FWD Transmission ID charts
Up to 1999, all the TC's have simple k-factor numbers (e.g., 133, 155, 163, 180):
http://home.att.net/~subzero350/1999_4T65-E.pdf
But starting in 2000, certain TC's have a k-factor listed as "R115":
http://home.att.net/~subzero350/2000_4T65-E.pdf
What does the "R" mean? What is "R115"?
