Originally Posted by
10sec306
Chad the picture of yours is either a 500 or 600, Hurst is correct and also the 3550 will have a 28 spline output and the 500/600 will have 31 spline.
They had 26/31 spline 3550 based TKO's also. The one I showed is an early 1999 TKO. You have to remember the TKO II's were 3550 based and also had 26/31 spline and rated 475 lbs. The one I have is only rated 425lbs.
Hurst