ok, i remember something about the 7 1/4 changing axel size "3" times? i need to know what years for interchangeability for center sections and whatnot. ex., will a 69 center work w/a 63 housing and axels. thnx much................steve

This was from an earlier post- from the good doctor, It will help

"The 60-62 (and even some early 63s) have a real small axle bearing that has been "NA" for some time now.
Here are some other numbers to search for:
New Departure # D88506FR
Also show RW206FFR and RW206CCR as listings.

If you run accross a later (64-72+) 7 1/4 rearend with the larger bearing axles, grab it along with the backing plates and think about swapping over to that (more common) set-up.
DD"
Hope that helps

thnx vdart, so there were 2 sizes of axels? that narrows it down, hope mine 63 wasnt the "small" one..................................steve

'73 and up disc brake cars had different axels too. They will definitly not interchange with an earlier housing. The center section should though.

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