Not remembering a 985 8.75. Confusion is contagious. :) Gary H. > -------Original Message------- > Hello, > > I have my self totally confused. I had a shop replace my 1965 2.94 > open third member with an unknown year 985 (742?) 3.23 open third > member. The 985 unit was out of a tapered axle differential. I have > not been back to the shop yet but before I go I have questions about > the Thrust Blocks (buttons). > > I know I have them on my limited slip 3.23 third member in another > car, I installed it myself years ago however the more I read the more > I don't understand open third members. It appears that all Mopar 8 > 3/4 third members have thrust blocks? I pulled the 985 3.23 open > third member out of the differential and do not recall seeing any > thrust blocks, did I miss something or did I drop them and lost them? > However I was not the first person to have been in the differential, > the person I got it from had pulled the axles to verify the gear > ration on the ring gear, then put the axles back in the housing. > > Tomorrow I am going to pull the wheels and see if I can check the axle > end play. I know the 1965 differential adjusts with an adjuster ring > and not shims like the old tapered axle differentials. > > The following was copied from the Internet: > > Any 8-3/4" center section may be interchanged for another as an entire > assembly, with the exception of center sections manufactured prior to > model year 1964 (See Section 1: "Thrust Block Variations"). > > There was a difference in thrust blocks prior to 1964 that make center > section > interchange, as well as axle interchange problematic. The thrust > block, or "axle shaft > thrust spacer", it thr block that both left and right axles butt up > against inside the center > of the differential. Prior to 1964, all open differentials used a > thrust block was approximately 1/8" to 1/4" thicker than units made > after 1964. > > Any suggestions other than checking the axle end play would be > appreciated. Did I make a swap that should not have been done and go > back to my 2,94 gears? > > Thanks > > Dennis C. > -- -- -- Please address private email -- email of interest to only one person -- directly to that person. That is, email your parts/car transactions and negotiations, as well as other personal messages, only to the intended recipient. Do not just press "reply" and send your email to everyone using the general '62-'65 Clubhouse public email 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. -- You received this message because you are subscribed to the Google Groups "The 1962 to 1965 Mopar Mail List Clubhouse" group. http://groups.google.com/group/1962to1965mopars?hl=en. --- You received this message because you are subscribed to the Google Groups "The 1962 to 1965 Mopar Mail List Clubhouse" group. To unsubscribe from this group and stop receiving emails from it, send an email to 1962to1965mopars+unsubscribe@xxxxxxxxxxxxxxxx. To view this discussion on the web visit https://groups.google.com/d/msgid/1962to1965mopars/20190820030738.11373.qmail%40server309.com.