The first question is what size Brake drums and backing plates came stock from the factory on a Feb build date, 1970 Hemi Cuda, Dana rear end. Second question, would they be the same as on a track pack equipped 1970 Hemi Cuda or would the brakes have been bigger? Such as 10.5 on normal 70 hemi cuda and 11" on track Pack 70 Hemi Cuda. Please be as exact as you can. I appreciate it. Thank you.

3.54 could have either or.... does the car have power disc brakes?

4.10 cars all had 10.5 inch rear brakes in 1970

What sizes of backing plates and brake drums were available on the Dana 60 rear ends. Were there 10", 10.5", 11"?
If I understand correctly, the 1970 Hemi Cuda with a 4.10 Dana Track Pack would have come from the factory with 10" backing plates and matching brake drums. Is this correct? Exactly where are the measurements taken at?
Thanks,

Supertrack pak had front discs and rear 10 inch brakes along with a 4.10. Track Pack had 11 inch drums all around with a 3.54 ratio. Did the car come with front discs?
I always got a kick out of a 4.10 gear car that was good for 120MPH maxed out had the discs while the 3.54 gear that could easily pull 140MPH had the drums.

Sheldon

As far as I know, all hemi E-bodies came with disc brakes, therfore they should have 10 x 2 1/2" rear drums.

3.54 4spd cars, 3.23 and 3.55 auto cars could have 4 wheel drum brakes. 11” finned drums

082 - 3.54 s/g, Dana 60, 11" rear & front drums, (A33 Pkg)
083 - 3.54 s/g, Dana 60, 10" rear drum - front disc, (A33 Pkg)
084 - 4.10 s/g, Dana 60, 10" rear drum - front disc, (A32/A34 Pkg)

Could they be finned drums