Daniel Johnson
Member
What do I need to know about spindle and disc brake upgrade kits? I want to keep the torsion bars.
1970 Dart big block engine swap.
- Thread starter Daniel Johnson
- Start date
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That's a loaded question...
So are you asking about a BB engine swap, or a disk brake upgrade, or a combo with aftermarket parts????
OEM parts?
BBP wheels or OEM SBP wheels?
So are you asking about a BB engine swap, or a disk brake upgrade, or a combo with aftermarket parts????
OEM parts?
BBP wheels or OEM SBP wheels?
Doctor Diff has some options you should look at his website. He has spindles, upper control arms etc. disc brake swap kits etc
Professor Fate
Push the button, Max...
Doctor Diff has all the basics covered. There are lots of options for disc brakes using mostly factory parts. I'm running 13 inch Baer rotors with Viper calipers on my Duster. I have the stock '73 type front suspension on the car with torsion bars.
Andy, what size wheels in the front? Thanks.
We still don't know what the OP wants to do!
Daniel Johnson
Member
I’m putting a 440 in an a body, so I need to upgrade my spindles for disc brakes. What brand of kit do you recommend, if I stay with the torsion bars.
Daniel Johnson
Member
No need for power booster on the master cylinder?
Nope. You will have manual brakes.
Power brakes should not be required but it is just one of those things where you have to properly select the components. Building a custom brake system requires some thought. The master cylinder bore size needs to be a good match for the caliper piston size and you need a proper ratio of caliper piston size to rear brake size for everything to work properly.
I'm assuming you have drum brakes now.
why not just go OE? either 67- 70 something KH with SBP OR 70 something and later single piston and BBP.
start a wanted ad.
Daniel Johnson
Member
The Dana 60 rear end already has the disc brake upgrade. Changing spindles on the front so I can Run disc brakes in the front also. Plenty of room, Mopar interceptor slot rims.
Professor Fate
Push the button, Max...
In that case, the 11.75" rotors from some B and R bodies is about as big as you can go with the cop rims. These rotors will fit the later ('73+) A body and F/M/J body disc spindles as long as you use the appropriate factory caliper adapter. Dr. Diff carries them if you can't locate them in a boneyard.
That is a red flag right there. If the Dana 60 has disc brakes on it then you need to match the front brakes to it or else you'll have a mess. Don't assume that you can mix and match random brake parts together and have something that works. You can't mix and match random brake parts anymore than you can mix and match random engine parts. Everything has to work together as a system.
Daniel Johnson
Member
Good info, thanks!
Post a picture of the disc brakes that you have on your Dana 60 and I'll probably be able to to tell you what they are. The primary question will be what size the piston is in the rear caliper. The front calipers need to have roughly twice the piston area as the rear caliper for the brake system to be properly balanced.
Dartvader440gt
Well-Known Member
I converted my 69 Dart 440/727 to factory style discs from an A-body Barracuda. No need for a power booster. It won't clear the valve cover anyway. Mine work great.
Daniel Johnson
Member
I got my brakes all squared away, 11 1/2” drilled and slotted discs front and rear. Going to run new brake lines and I have a new master cylinder and proportioning valve. New subject, my 440 has aluminum heads, big cam and 10:1 compression. I’m running a FiTech EFI. Wondering what my spark plug heat range should be along with thermostat temperature. I’m sure they will both have a direct influence on each other.
Daniel Johnson
Member
By the way, I will be running this car at this dragstrip to see what it will do but I mainly want to make it a cruiser
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