{Chrysler 300} Re: Front disc brakes 1963

[Paul <amidcenturymopar@xxxxxxxxx>]

I have a 300F that I purchased in February.  The previous owner had installed a front disc brake conversion kit that was built by Engineered Components Inc.  The system works well, and the discs and calipers clear the stock 14" wheels that came on my 300F.  The conversion kit is sold by Andy Bernbaum, but it is advertised as fitting 1957 - 1961 Chryslers.  The maker (ECI) has many kits available and trades under the name of Hot Rod Brakes.  The website is https://ecihotrodbrakes.com .

Mark Reid is the owner, and I am presently collaborating with him to develop a rear Disc Conversion Kit for the early Chrysler 8-3/4" rear ends that use the tapered roller bearings and cannot use the "Green Bearing" conversion that the rear disc conversion kits for later versions of the axles require.  The "Total Contact" service brake system was used with the early version axle, and when Chrysler redesigned these brakes for the 1965 model year, they went to the later axle which is the more common version of the 8-3/4" rear.  This is the axle that was used throughout the muscle car era on B, C and E bodies.  The early axle used tapered axle shaft ends, which had wheel hubs that were also tapered and press fit on to the axle ends, using a 5/16" square keyway and a castellated nut to hold the hub on.  The later version of the axle had the wheel hub permanently attached to the axle shaft.  The axle shafts are two different diameters, which is why you can't execute a "Green Bearing" conversion on the earlier axles.

Hope this is helpful.  If anyone out there is interested in the rear disc conversion, I'll keep you posted.

On Thursday, July 31, 2025 at 1:25:41 PM UTC-4 firemc1958 wrote:

Forgot,I already have changed to 15” wheels.
Sent from my iPad

> On Jul 31, 2025, at 12:24 PM, Richard McFarland <firem...@xxxxxxxxx> wrote:
>
> I have a 63 300,383 auto. Does anyone know if a kit exists for installing font disc brakes? Booster,proportioner the whole bit? I see kits for different mopars of that era everywhere but not sure what will work. Not looking for original just want what will work. I drive the car a lot on trips,highways everywhere. Planning on doing Route 66 and just want it safe.
> Thanks to all
> Sent from my iPad

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