I've got a '70 Road Runner convt. power front disc car originally a 383. My master cylinder has a small front reservoir/large back & the brake lines enter on the fender side of the master cylinder.

I ordered a Cardone 13-1475 master cylinder since that's what the Rock Auto catalog listed (no pic). The master cylinder looks similar, but it's narrower than mine, has a small plug on the bottom and the brake lines enter on the engine side of the master cylinder.

I know that Ma' Mopar did some unusual stuff back in the day.

Looking a little closer at master cylinders with small front/large rear reservoirs, fender side brake lines on various engines in 1970 b-bodies I find the following:

1.383 & 440
a. Cardone 13-1515 "front disk, rear drum, manual brakes"
b. Centric 13063055 "front disk brakes"
c. Cardone 10-1523 "front disk, read drum, manual brakes"

2.Hemi
a. Cardone 13-1515 "front disk, rear drum, manual brakes"
b. Centric 13063055 "front disk brakes"
c. Cardone 13-1404 "front disk, rear drum, power brakes" (only one unique to Hemi's)
d. Cardone 10-1523 "front disk, rear drum, manual brakes"

All of these (4) master cylinders look like they'll fit in a thumbnail pic (not sure on brake line sizes, just appearance). I can see that Cardone's 10's are rebuilt and 13's are new master cylinders.

Here are my questions:
1. Do I have a Hemi braking system factory stock?
2. Which master cylinder should I buy? (I care about good braking, not "numbers matching")
3. Should I just use one of the 383/440 "manual" master cylinders that have small front/large rear reservoirs and fender side brake lines and don't worry that I have power brakes?
4. What are the differences between all these master cylinders? Why should I pick one over another?

Thanks for Your Help!

http://www.theramman.com/


Give him a call. He can answer any question you may have about Mopar MC's.

He was a great help for me finding an OE for my '73 Chally

69-70 B body masters can vary with the lines inboard (facing the engine) or outboard (facing the inner fender), usually the 1475 power master disc application is used on the dual diaphram Bendix booster, the 1404 master you'll usually find on the Midland Ross single diaphram booster,....but not written in stone, if your lines are outboard (facing the inner fender) use the 1404 master, I usually prefer Fenco (avaliable at AutoZone) replacement units, quality rebuild and the correct master in the box


Mike