jbooth35
Member
I'm getting the car back on the road. Going to replace the entire braking system and having trouble finding rear 11x3 drums that are on the 65 polara. Please advise.
Thanks
Thanks
Pretty sure the rear 11x 3 was discontinued 20 years or so ago. I have stock.....picked up 3 skids of obsolete Mopar drums a couple of years ago. I'm in Canada. All the boxes I have are mid 70's date codes and made in USA.Bought mine at car quest
Pretty sure the rear 11x 3 was discontinued 20 years or so ago. I have stock.....picked up 3 skids of obsolete Mopar drums a couple of years ago. I'm in Canada. All the boxes I have are mid 70's date codes and made in USA.
They do not look like 11 x 3"s too shallow...pretty sure a correct one is 3.25" deep.....I will check tomorrow.
An 11 x 2.75 is a C body front drum.I believe the 11x3 linings are the same, f/r. Was thinking the drums were similar? Have to look in the parts book to make sure.
In looking about 11x3 brake shoes a while back, on RockAuto and in the individual manufacturers' websites, some listings for 11x3 are really 11x2.75. Kind of have to read between the lines and look at the specs to see what they really are, or are supposed to be.
CBODY67
Those are some powerful rear brakes. Yes it will work but you are asking a awful lot out of the proportioning valve, especially in a panic situation. Since he needs new drums that are hard to find and getting brake supports for 11×2.5 is easier, even available brand new, all the hardware/wheel cylinders crosses over. They would be a better balance for the disc brakes he is putting on the front, which leads me to believe 100% correctness is not a driving force here. Why not correct the problem now instead of after the car scares the piss out of him when it swaps ends after that deer ran out in front of him. If 11×3 rear brakes were so great, why did the stop offering them in later model years? Bigger is almost always better but sometimes it is not.If one is concerned about too much rear brake in a front disc 3" rear drum setup, I would suggest they use an adjustable prop valve to reduce rear braking force in panic stops and potential lockup/control loss