When you are building a "bulletproof" rig with a GM 14 Bolt or Dana 60, the final piece of the puzzle is often the braking system. Most builders want the power of a rear disc brake conversion but aren't willing to give up the safety of a mechanical emergency brake. The EWO Cadillac El Dorado Brake Calipers are the industry-standard solution that bridges the gap between massive clamping force and street-legal safety.
Why Off-Roaders Trust the Cadillac El Dorado Design
The challenge with most rear disc conversions is that standard calipers are purely hydraulic. For a trail rig that might be parked on a 30-degree incline, you need a physical lock.
The Hydro-Mechanical Advantage
The EWO Cadillac El Dorado Brake Calipers feature an integrated mechanical parking brake. Inside the caliper, a high-lead screw moves the piston independently of the hydraulic fluid. This mechanical emergency brake caliper ensures that even if you have a total hydraulic failure on the trail, you still have a way to stop and hold the vehicle.
Stop Settling for "Rusty Rebuilds"
For years, the only way to get these was to find 1976-1978 Cadillac Eldorado rear calipers in a scrapyard. Those units are notorious for having seized internal ratchets. East West Off Road brake calipers are 100% brand new with no core charge. They are finished in a clear zinc coating, ensuring your off-road brake upgrade stays corrosion-free and functional through mud and salt.
Technical Specs for Heavy-Duty Performance
Whether you are performing a 3/4 ton truck rear disc conversion or a 1 ton axle disc swap, your calipers need to match the weight of your vehicle and the size of your tires.
Massive Clamping Power
With a 2 15/16 inch piston, these calipers provide the exact same volume as the GM K20 brake caliper or GM V20 truck brakes. This means you get a consistent pedal feel and plenty of torque to stop 37" to 40" tires.
Precision Fitment
These loaded rear brake calipers are designed for easy integration into custom builds:
- 7 inch mounting pin spacing fits standard SRW 14 bolt disc brackets.
- GM dual-bleeder caliper design allows for easy bleeding regardless of the caliper's "clocking" position on the axle.
- Includes 7/16-20 banjo bolts with copper sealing washers.
Installation Tips: Setting Up Your Parking Brake
To ensure your rear disc parking brake works like a factory system, you must follow the correct setup procedure for the D122 brake pads.
D122 vs D52: The Importance of the Locking Nub
You cannot use standard front pads. The D122 brake pads feature an anti-rotation locking nub. This nub locks into the face of the piston, allowing the internal ratchet mechanism to function as the pads wear. Without this nub, the piston will rotate, and the parking brake will never self-adjust.
Eliminating the "Spongy Pedal"
A common issue in 4 wheel disc conversion projects is a spongy pedal. To fix this, we recommend:
- Steel braided brake lines to eliminate hose expansion.
- Ensuring the residual pressure valve is removed from the master cylinder (or upgrading to a disc/disc master cylinder).
- Cycling the heavy duty parking brake lever manually before bleeding to "click" the piston out to its working position.
Frequently Asked Questions (FAQs)
1. Will these fit my Dana 60 rear disc conversion?
Yes. These are the preferred calipers for Dana 60, GM 14 Bolt, and Sterling 10.25 disc brakes when a parking brake is required.
2. Is there a core charge on the E63013?
No. All EWO Eldorado-style calipers are brand new. There is no core charge and no need to return old parts.
3. What size are the mounting pins?
These use the standard GM 7-inch spacing, which is compatible with most aftermarket 14 Bolt disc brake swap brackets.
4. Why are these better than a line lock?
A line lock is hydraulic and can leak down over time, causing the vehicle to roll. A mechanical emergency brake caliper is a physical lock that is much safer for parking.
5. Are the pads included?
Yes, every set comes as loaded rear brake calipers, including a pair of D122 pads and the necessary hardware.