1970 Service manual brake rotor size versus actual?

[Dragon Slayer]

The 1970 Plymouth service manual for the KH single piston floating caliper states the rotor is 11.75" diameter, yet my 70 road runner has the 10.97" rotors with the single piston KH calipers. From the research I have done, there seems to be a lot of conflicting information. What size was the rotor on the 70 Road Runner with Power Disc brake option as delivered by the factory? Was it 11"? Seems like you need different caliper adapters to fit a 11.75" rotor. I do see that there are conversions based on using Newer Mopar parts. Thanks, G

 

[clazar]

I have a 70 RR with the 11" rotor also & Bendix caliphers. I also have boxed replacements that are 11".

Chuck

 

[Dragon Slayer]

Chuck, Thanks. Are they OEM? The bendix was the 4 piston caliper correct? Still would like to know if the KH single caliper was for 11" rotors too. G

 

[5.7 hemi]

From what I understand, the 11.75 rotors did not become available until 1973 for the b bodies, or any car for that matter. But don't quote that as gospel!!

 

[440+6]

My 70 GTX has 11 inch rotors with single piston calipers

 

[SCulliton]

my 70 RR also has 11 inch Rotors and single piston caliper