Im wanting to keep my stock14's and all the aftermarket brake options have 11" rotors. What diameter are the factory rotors that were behind 14" wheels? Thanks

 

The Right Stuff Detailing now sells a front disc brake conversion for GM cars which allows you to retain your stock 14" drum brake wheels. Part #AFXDC14 will fit 64-72 A-body cars with power brakes or AFXSD14 for manual brakes.
Check it out at www.getdiscbrakes.com
I have a Right Stuff disc conversion on my 442 and it works great.

 

10.75" (which most people round up to 11"). Again, be aware that not all 14" wheels have the same shape on the backside. GM made both wheels that cleared disc brakes and wheels that did not. SS I wheels came both ways. All SSII/III wheels will clear disc brakes.

 

Awesome I will check it out and mine are the SS II, thanks guys