Drums to Disc

Vs29H1B said

The factory four-piston calipers work great, as long as the car is used regularly, and the pistons do not hang up in the bores, due to corrosion/pitting in the bores. Rebuilding these calipers is very straight-forward, and can be accomplished with very simple hand tools.



A re-sleeving service is available that fits new stainless steel sleeves into the bores, and that takes care of any future bore issues.


Take a look at any of the modern supercars including Viper, Corvette ZR1, Buggati Veyron, even the Challenger SRT8; all use multiple piston calipers.


The '73-'76 calipers use a single piston caliper design.

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I agree, the single piston design was probably a cost-cutting measure by Chrysler. They actually lost about 25% of the braking surface by going to the single piston design. The four-piston KH is IMO a better system than the later single piston design but (as mentioned) must be kept active as the OE brake pistons will get stuck in their bores if the system sits too long unused. Stainless steel pistons are now available.

Doug, guys are always swapping out the KH system for lighter, newer pieces on their race cars, so you might have luck finding a 65-72 Kelsey Hayes set-up. They do show up on here occasionally, you'll need the spindles and knuckles as well.