'65 Formula S with "factory" 727 and 8 3/4?

toolmanmike said
...the axle is #178

toolmanmike said
[factory] 8 3/4 Sure Grip. 3.23

pbiggs said
Quoting Govier's 1991 Parts Interchange Book: build code (not sales code)
011 is 1966 A-body 3:23 SG 10" brakes 7 1/4" rear end
178 is 1966 A-body 3:23 SG 10" brakes 7 1/4" rear end
I have no idea why the same rear in 1966 A-bodies would have different build codes for the apparently same rear end.

Good stuff in this thread. So..... Broadcast Sheet "Axle Build Code" 011 is a 7 1/4" 3.23 SG w/10" brakes (per GG's 1991 book), and code 178 (like TMM's) must be 8 3/4" 3.23 SG w/10" brakes (contrary to GG's 1991 book). Still not defined is crawsfire's axle build code of 138 for his 8 3/4" 3.23 SG (maybe has 9" brakes?). And rod440's code of 173 for his 8 3/4" 3.91 SG, does that have 9" or 10" brakes? The deeper you dig, the more questions you get. It's the Mopar way...