: Rear Brakes

02-13-07, 10:37 PM
I'll be calling the shop tomorrow about getting my rear brakes done on Friday. Last time I was under the vehicle, I noticed the brake lines to the rear are getting pretty rusty, which leads me to question one: How expensive are brake lines to replace? Could I ask them to use stainless steel (They'll see plenty of salt in winters to come)?

Second thought: I believe the tow-package Broughams had 12" drums and the regular 5.0 Broughams had 11". Does my "Coachmaster" Brougham have 12" drums? I know the shop will be able to figure it out no problem, I'm just wondering for myself if 12" are more expensive than 11", and if the shoes are different sizes as well?

02-14-07, 11:23 AM
Brake lines shouldn't be too expensive. I'm not sure about the drum differences, but the price between the two shouldn't be much. And yes, the shoes would be different sizes.

02-14-07, 07:48 PM
I haven't actually seen any of the cars with the 12in, but they are the old 12x2 from the 71-76 B/C/D cars (RPO J55).

From 71-96 there were 4 brake options, depending on years and models.

11x2 Drums
12x2 Drums (note getting rare to get parts!)
11.5x2.75 Drums (sourced from the C/K trucks, limo's only)
11.75 (12?) Discs (94-96 9C1 and Impala SS only)

02-14-07, 09:36 PM
Interesting! Well, I'm curious now. I went to Checker today to pick up a few things and I asked about the drums. When I told the guy I had a 350, he informed me there were two sizes for me to pick from, 11" and 12". Well, regardless, I have an appointment at 8:30 Friday morning, so when I pick it up I'll ask.

02-14-07, 09:38 PM
Are you having them done at Denny Hecker's Southview Chevrolet? If not, ur a bastard.

02-14-07, 09:39 PM
Look for a RPO code like JA4 or JM4. That is most common with std brakes. J55 with the 12in. They are rare.

Look at the SPID.

Probably less than 1% of the cars got the 12in would be my guess.