If you're asking about pinions, here is what I know off the top of my head. The 742's had the courser splined pinion and it was also smaller in diameter than the 489 chunk which had finer splines and a wider diameter pinion shaft. Sorry, I don't have the spline count and shaft diameter available right at the moment but if that's the info you're looking for I think I can come up with it. Paul L. '63 Sport Fury 440/727 http://www.1962to1965mopar.ornocar.org/ml-lennemann63.html Dodger7998@xxxxxxx wrote: > > > I need a refresher course on yokes,,,,,, as I remember there were two > different spline counts as well as large and small, anyone remember what > went on > what for what years? > > -- > [Non-text portions of this message have been removed] > ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! 1962 to 1965 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.