I am in the process of making a bunch of upgrades to my son’s 67 Dart and I got some questions. The car is a slant six, with a 7.25 rearend and drum brakes. I am swapping in a 360 magnum and an A518 transmission. I’m also swapping in front disc brakes from a 76 valiant and an explorer 8.8 rearend with disc brakes. The valiant did not have power disc brakes. Can anyone tell me what master cylinder I need for this set up? Can I add a brake booster. I’m assuming an adjustable proportioning valve is the way to go. Any help would be appreciated. I’m supposed to have this car ready for his HS graduation so I need to get busy. Thanks.
Front and rear disc brake swap help needed.
- Thread starter Truckie
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Manual disc brakes will work just fine, I have them on my race car & they work very well on short shutdown tracks. I would opt for about a 1" bore master cylinder start from there.
Blind Squirrel
Well-Known Member
Disclaimer: I haven't done this to my mopar yet.
You didn't say if you have power steering. But if you're looking to go booster. The best swap I've done is gone to a hydroboost system. I used one from a dodge truck and put it in my 57 wagon. Takes up way less space. Doesn't look ugly, and works great.
You didn't say if you have power steering. But if you're looking to go booster. The best swap I've done is gone to a hydroboost system. I used one from a dodge truck and put it in my 57 wagon. Takes up way less space. Doesn't look ugly, and works great.
72Dart6pack
Harder Better Faster Stronger.
You will want a 15/16 MC. Dr Diff sells them.
furyus2
Well-Known Member
You can try the 15/16 MC, but since you are using the brakes from a 76, the question is what size caliper piston. The 73 up was 2.60, and around 1976 they went to 2.75 caliper piston. This is what I have, and I had to use a 1 1/8 inch MC.
Like said^^^ there is no need for booster. But I am a guy that prefers manual steering too.
ScamperTom
Supposed to be working
If you’re going with 4 wheel discs, the factory distribution block may be adequate.
The factory 4 wheel drum brake distribution block?
ScamperTom
Supposed to be working
Yes. I believe the distribution of force between the front and rear is the same for street driving, disc or drum, as long as all the wheels have the same sort of brakes. Of course, if you plan on tracking the car occasionally, you would probably benefit from an adjustable proportioning valve.
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