One thing that seems to be peculiar about these rear ends is the published interchangeability. I was at the junk yard just the other day and asked for all the possible interchanges for a 73 Nova... here is the list I was given:
Camaro '67-69 10 bolt cover
Nova '68-71 10 bolt cover
Nova '77-79 11x10-1/4 cover
Omega '77-79 11x10-1/4 cover, 9-1/2x2 brakes
Phoenix '77-79 11x10-1/4 cover, 9-1/2x2 brakes
Ventura II '71-75
Ventura II '77 11x10-1/4 cover, 9-1/2x2 brakes
Several things caught my attention on this list tho: First, there is no distinction between the cars that are known to be 8.2" versus 8.5", so they must only be concerned with it fitting in the car properly. The second thing that sticks out is that fact that none of the cars listed include the '76 model year! Any body know why that is? 76 model year list includes all the different makes list above as being interchangeable, but only with other 76 models.
Also, I didn't see this picture out on the site referenced above, so here is a decent picture comparing the rears: http://www.chevelles.com/showroom/rears.jpg
Colorado Springs, CO
68 Camaro... someday!
71 Chevelle SS
[This message has been edited by BC (edited 08-07-2002).]