Here's why it's complex:
* No direct replacement kit: There's no readily available kit designed to directly swap drum brakes to disc brakes on a '62 Impala. You'll need to source parts from various sources and potentially fabricate some components.
* Spindles: You'll need to replace the existing drum brake spindles with disc brake spindles. These are completely different parts.
* Caliper mounting: You'll need to find calipers that fit your chosen disc brake setup and figure out how to mount them securely and correctly to the new spindles.
* Brake lines: The brake line routing will need to be completely redone to accommodate the new calipers and master cylinder (you'll likely need a different master cylinder, too, due to the increased braking force of disc brakes).
* Proportioning valve: The braking system needs a properly sized proportioning valve to distribute braking force correctly between the front and rear brakes. You'll likely need to adjust or replace this to accommodate the upgrade to disc brakes.
* Wheel bearings and hubs: These components might need replacing or adapting to fit the new disc brake setup.
* Hardware: Various mounting brackets, bolts, and other hardware will be needed, and you may need to fabricate some of these pieces.
* Master Cylinder: The master cylinder might need upgrading depending on your selected disc brake kit, because of the higher pressure requirement needed for disc brakes.
In summary: While it's *possible*, converting a '62 Impala's drum brakes to disc brakes is a major undertaking requiring significant mechanical expertise, specialized tools, and a considerable investment in parts. Many choose to purchase a pre-made conversion kit from reputable suppliers specializing in classic car brake upgrades. Even with a kit, proper installation still requires substantial mechanical skill. If you lack experience, it's strongly recommended you seek the assistance of a professional mechanic specializing in classic car restoration.
