Rear disc brake gear ratio
 

I am looking at a 79 and 80 TA for parts and both have rear disc brakes.
I just want the posi unit to put in a non rear disc brake rear end.
Were the rear disc brake gear ratios the same or could you get any gear ratio?
The 79 had a 403 Olds, the 80 had a regular 301 engine.
Thanks

I believe the standard 1979 WS6 rear ratio was 2:73 (which most had),but have documented several 79's with optional 3:23's

As I recall,3:08's were mandatory for all 80-81 WS6's

Thanks for the info.
Even the 2:73 ratio could be changed to 3:90 without a ring gear spacer then, correct?

i may be wrong here but it was my belief that the 2.41 and 2.73 were in a class of their own. . .requiring spacers to upgrade.

Correct, the 241/256 carrier requires a spacer to run lower gears. 273 down everything fits.

For cruising & a bit of spirited street driving,the spacer should be OK,but if you are planning ANY serious drag racing,you should just start with the correct series carrier. JMO

Thanks for all the replies.